TANNIC ACID (TANNK AST)
SYNONYMS: Acidum tannicum; Gallotannic acid; Digallic acid; Gallotannin; Tannimum; Quercitannin; Oak bark tannin; Quercotannic acid; Querci-tannic acid; Querco-tannic acid; Identifiers; TANNIC ACID; 1401-55-4; Tannin; Gallotannic acid; gallotannicacid; MFCD00066397; MLS001335996; 5424-20-4; CHEBI:81066; SMR000857330; DSSTox_CID_6076; DSSTox_RID_78006; DSSTox_GSID_26076; Quebracho extract; CAS-1401-55-4; Tannic acid; Tanninum; tannic-acid; Chinese gallotannin; NCGC00095101-01; Gallotannin; Tannin; EINECS 226-562-9; C76H52O46; Tannin (Tannic acid); Tannic acid; Tannic acid, technical grade; MLS001335995; SCHEMBL409692; Tannic acid, SAJ first grade; CHEMBL506247; GTPL4319; BDBM60986; Tannic acid; cid_16129778; LRBQNJMCXXYXIU-PPKXGCFTSA-N; Tox21_111422; Tox21_300079; BDBM50442879; AKOS015951319; Tannic acid, Vetec(TM) reagent grade; AN-8415; RL01715; beta-D-Glucose pentakis(3,4-dihydroxy-5-((3,4,5-trihydroxybenzoyl)oxy)benzoate); NCGC00186054-01; NCGC00186054-02; NCGC00253925-01; SC-80506; Tannic acid, tested according to Ph.Eur.; AB1009468; C17409; Tannic acid, Source: Chinese natural gall nuts; Q-201780; gallotanic acid; digallic acid; allotannin; tannimum; Tannic acid, puriss., meets analytical specification of USP, powder; Tannic acid, United States Pharmacopeia (USP) Reference Standard; Beta.-D-glucopyranose; pentakis[3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoate]; (2R,3R,4S,5R,6S)-4,5,6-tris({3,4-dihydroxy-5-[(3,4,5-trihydroxyphenyl)carbonyloxy]phenyl}carbonyloxy)-2-[({3,4-dihydroxy-5-[(3,4,5-trihydroxyphenyl)carbonyloxy]phenyl}carbonyloxy)methyl]oxan-3-yl 3,4-dihydroxy-5-[(3,4,5-trihydroxyphenyl)carbonyloxy]benzoate; [2,3-dihydroxy-5-[[(2R,3R,4S,5R,6S)-3,4,5,6-tetrakis[[3,4-dihydroxy-5-(3,4,5-trihydroxybenzoyl)oxy-benzoyl]oxy]tetrahydropyran-2-yl]methoxycarbonyl]phenyl] 3,4,5-trihydroxybenzoate; tannic acid, β; 1,2,3,4,6-Pentakis-O-{3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoyl}-β-D-glucopyranose; 1,2,3,4,6-Pentakis-O-{3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoyl}-β-D-glucopyranose [German]; 1,2,3,4,6-Pentakis-O-{3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoyl}-β-D-glucopyranose; 226-562-9; 3042; 5424-20-4; Gallotannin; MFCD00066397; tannic acid; Tanninum; β-D-Glucopyranose, pentakis[3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoate]; (2R,3R,4S,5R,6S)-4,5,6-tris({3,4-dihydroxy-5-[(3,4,5-trihydroxyphenyl)carbonyloxy]phenyl}carbonyloxy)-2-[({3,4-dihydroxy-5-[(3,4,5-trihydroxyphenyl)carbonyloxy]phenyl}carbonyloxy)methyl]oxan-3-yl 3,4-dihydroxy-5-[(3,4,5-trihydroxyphenyl)carbonyloxy]benzoate; (2S,3R,4S,5R,6R)-2,3,5-TRIS[3,4-DIHYDROXY-5-(3,4,5-TRIHYDROXYBENZOYLOXY)BENZOYLOXY]-6-{[3,4-DIHYDROXY-5-(3,4,5-TRIHYDROXYBENZOYLOXY)BENZOYLOXY]METHYL}OXAN-4-YL 3,4-DIHYDROXY-5-(3,4,5-TRIHYDROXYBENZOYLOXY)BENZOATE; (2S,3S)-2-(3,4-Dihydroxyphenyl)-3,5,7-trihydroxy-2,3-dihydro-4H-chromen-4-one; [1401-55-4]; 1,2,3,4,6-penta-O-(3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoyl)-β-D-glucopyranose; 5299277; ACS; Chinese gallotannin; Glycerite; MFCD00006845; tannic acid, 95%; tannic acid; tannic acid, acs reagent; Tannic acid, technical; tannic acid,98%; tannic acid-ar; TANNICACID; β-D-glucose pentakis[3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoate]; Galotannik asit; Tannin; Alkaloit; Abcolgambier; abcolmimosame; abcolquebracho; abcolsumack19; abcoltannicacidtech; Abcoltannicacidusp/kosher; acaciamollissimatannin; 1,2,3,4,6-penta-O-{3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoyl}-D-glucopyranose; 2,3-dihydroxy-5-({[(2R,3R,4S,5R,6R)-3,4,5,6-tetrakis({3,4-dihydroxy-5-[(3,4,5-trihydroxyphenyl)carbonyloxy]phenyl}carbonyloxy)oxan-2-yl]methoxy}carbonyl)phenyl 3,4,5-trihydroxybenzoate; 8186386; 75211; ChEMBL506247; 17286569; 4319; C13452; 16129878; 28F9E0DJY6; (2R,3R,4S,5R)-4,5,6-tris[3,4-dihydroxy-5-(3,4,5-trihydroxybenzoyloxy)benzoyloxy]-2-{[3,4-dihydroxy-5-(3,4,5-trihydroxybenzoyloxy)benzoyloxy]methyl}oxan-3-yl 3,4-dihydroxy-5-(3,4,5-trihydroxybenzoyloxy)benzoate; OC1=CC(=CC(O)=C1O)C(=O)OC1=C(O)C(O)=CC(=C1)C(=O)OC[C@H]1OC(OC(=O)C2=CC(OC(=O)C3=CC(O)=C(O)C(O)=C3)=C(O)C(O)=C2)[C@H](OC(=O)C2=CC(OC(=O)C3=CC(O)=C(O)C(O)=C3)=C(O)C(O)=C2)[C@@H](OC(=O)C2=CC(OC(=O)C3=CC(O)=C(O)C(O)=C3)=C(O)C(O)=C2)[C@@H]1OC(=O)C1=CC(OC(=O)C2=CC(O)=C(O)C(O)=C2)=C(O)C(O)=C1; tannikasit; tanikasit; tannic acid; tannicacid; tanicacid; tannic asit; tannik acid; tanen; tannen; Acidum tannicum; Gallotannic acid; Digallic acid; Gallotannin; Tannimum; Quercitannin; Oak bark tannin; Quercotannic acid; Querci-tannic acid; Querco-tannic acid; Identifiers; TANNIC ACID; 1401-55-4; Tannin; Gallotannic acid; gallotannicacid; MFCD00066397; MLS001335996; 5424-20-4; CHEBI:81066; SMR000857330; DSSTox_CID_6076; DSSTox_RID_78006; DSSTox_GSID_26076; Quebracho extract; CAS-1401-55-4; Tannic acid; Tanninum; tannic-acid; Chinese gallotannin; NCGC00095101-01; Gallotannin; Tannin; EINECS 226-562-9; C76H52O46; Tannin (Tannic acid); Tannic acid; Tannic acid, technical grade; MLS001335995; SCHEMBL409692; Tannic acid, SAJ first grade; CHEMBL506247; GTPL4319; BDBM60986; Tannic acid; cid_16129778; LRBQNJMCXXYXIU-PPKXGCFTSA-N; Tox21_111422; Tox21_300079; BDBM50442879; AKOS015951319; Tannic acid, Vetec(TM) reagent grade; AN-8415; RL01715; beta-D-Glucose pentakis(3,4-dihydroxy-5-((3,4,5-trihydroxybenzoyl)oxy)benzoate); NCGC00186054-01; NCGC00186054-02; NCGC00253925-01; SC-80506; Tannic acid, tested according to Ph.Eur.; AB1009468; C17409; Tannic acid, Source: Chinese natural gall nuts; Q-201780; gallotanic acid; digallic acid; allotannin; tannimum; Tannic acid, puriss., meets analytical specification of USP, powder; Tannic acid, United States Pharmacopeia (USP) Reference Standard; Beta.-D-glucopyranose; pentakis[3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoate]; (2R,3R,4S,5R,6S)-4,5,6-tris({3,4-dihydroxy-5-[(3,4,5-trihydroxyphenyl)carbonyloxy]phenyl}carbonyloxy)-2-[({3,4-dihydroxy-5-[(3,4,5-trihydroxyphenyl)carbonyloxy]phenyl}carbonyloxy)methyl]oxan-3-yl 3,4-dihydroxy-5-[(3,4,5-trihydroxyphenyl)carbonyloxy]benzoate; [2,3-dihydroxy-5-[[(2R,3R,4S,5R,6S)-3,4,5,6-tetrakis[[3,4-dihydroxy-5-(3,4,5-trihydroxybenzoyl)oxy-benzoyl]oxy]tetrahydropyran-2-yl]methoxycarbonyl]phenyl] 3,4,5-trihydroxybenzoate; tannic acid, β; 1,2,3,4,6-Pentakis-O-{3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoyl}-β-D-glucopyranose; 1,2,3,4,6-Pentakis-O-{3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoyl}-β-D-glucopyranose [German]; 1,2,3,4,6-Pentakis-O-{3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoyl}-β-D-glucopyranose; 226-562-9; 3042; 5424-20-4; Gallotannin; MFCD00066397; tannic acid; Tanninum; β-D-Glucopyranose, pentakis[3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoate]; (2R,3R,4S,5R,6S)-4,5,6-tris({3,4-dihydroxy-5-[(3,4,5-trihydroxyphenyl)carbonyloxy]phenyl}carbonyloxy)-2-[({3,4-dihydroxy-5-[(3,4,5-trihydroxyphenyl)carbonyloxy]phenyl}carbonyloxy)methyl]oxan-3-yl 3,4-dihydroxy-5-[(3,4,5-trihydroxyphenyl)carbonyloxy]benzoate; (2S,3R,4S,5R,6R)-2,3,5-TRIS[3,4-DIHYDROXY-5-(3,4,5-TRIHYDROXYBENZOYLOXY)BENZOYLOXY]-6-{[3,4-DIHYDROXY-5-(3,4,5-TRIHYDROXYBENZOYLOXY)BENZOYLOXY]METHYL}OXAN-4-YL 3,4-DIHYDROXY-5-(3,4,5-TRIHYDROXYBENZOYLOXY)BENZOATE; (2S,3S)-2-(3,4-Dihydroxyphenyl)-3,5,7-trihydroxy-2,3-dihydro-4H-chromen-4-one; [1401-55-4]; 1,2,3,4,6-penta-O-(3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoyl)-β-D-glucopyranose; 5299277; ACS; Chinese gallotannin; Glycerite; MFCD00006845; tannic acid, 95%; tannic acid; tannic acid, acs reagent; Tannic acid, technical; tannic acid,98%; tannic acid-ar; TANNICACID; β-D-glucose pentakis[3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoate]; Galotannik asit; Tannin; Alkaloit; Abcolgambier; abcolmimosame; abcolquebracho; abcolsumack19; abcoltannicacidtech; Abcoltannicacidusp/kosher; acaciamollissimatannin; 1,2,3,4,6-penta-O-{3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoyl}-D-glucopyranose; 2,3-dihydroxy-5-({[(2R,3R,4S,5R,6R)-3,4,5,6-tetrakis({3,4-dihydroxy-5-[(3,4,5-trihydroxyphenyl)carbonyloxy]phenyl}carbonyloxy)oxan-2-yl]methoxy}carbonyl)phenyl 3,4,5-trihydroxybenzoate; 8186386; 75211; ChEMBL506247; 17286569; 4319; C13452; 16129878; 28F9E0DJY6; (2R,3R,4S,5R)-4,5,6-tris[3,4-dihydroxy-5-(3,4,5-trihydroxybenzoyloxy)benzoyloxy]-2-{[3,4-dihydroxy-5-(3,4,5-trihydroxybenzoyloxy)benzoyloxy]methyl}oxan-3-yl 3,4-dihydroxy-5-(3,4,5-trihydroxybenzoyloxy)benzoate; OC1=CC(=CC(O)=C1O)C(=O)OC1=C(O)C(O)=CC(=C1)C(=O)OC[C@H]1OC(OC(=O)C2=CC(OC(=O)C3=CC(O)=C(O)C(O)=C3)=C(O)C(O)=C2)[C@H](OC(=O)C2=CC(OC(=O)C3=CC(O)=C(O)C(O)=C3)=C(O)C(O)=C2)[C@@H](OC(=O)C2=CC(OC(=O)C3=CC(O)=C(O)C(O)=C3)=C(O)C(O)=C2)[C@@H]1OC(=O)C1=CC(OC(=O)C2=CC(O)=C(O)C(O)=C2)=C(O)C(O)=C1; tannikasit; tanikasit; tannic acid; tannicacid; tanicacid; tannic asit; tannik acid; tanen; tannen; Acidum tannicum; Gallotannic acid; Digallic acid; Gallotannin; Tannimum; Quercitannin; Oak bark tannin; Quercotannic acid; Querci-tannic acid; Querco-tannic acid; Identifiers; TANNIC ACID; 1401-55-4; Tannin; Gallotannic acid; gallotannicacid; MFCD00066397; MLS001335996; 5424-20-4; CHEBI:81066; SMR000857330; DSSTox_CID_6076; DSSTox_RID_78006; DSSTox_GSID_26076; Quebracho extract; CAS-1401-55-4; Tannic acid; Tanninum; tannic-acid; Chinese gallotannin; NCGC00095101-01; Gallotannin; Tannin; EINECS 226-562-9; C76H52O46; Tannin (Tannic acid); Tannic acid; Tannic acid, technical grade; MLS001335995; SCHEMBL409692; Tannic acid, SAJ first grade; CHEMBL506247; GTPL4319; BDBM60986; Tannic acid; cid_16129778; LRBQNJMCXXYXIU-PPKXGCFTSA-N; Tox21_111422; Tox21_300079; BDBM50442879; AKOS015951319; Tannic acid, Vetec(TM) reagent grade; AN-8415; RL01715; beta-D-Glucose pentakis(3,4-dihydroxy-5-((3,4,5-trihydroxybenzoyl)oxy)benzoate); NCGC00186054-01; NCGC00186054-02; NCGC00253925-01; SC-80506; Tannic acid, tested according to Ph.Eur.; AB1009468; C17409; Tannic acid, Source: Chinese natural gall nuts; Q-201780; gallotanic acid; digallic acid; allotannin; tannimum; Tannic acid, puriss., meets analytical specification of USP, powder; Tannic acid, United States Pharmacopeia (USP) Reference Standard; Beta.-D-glucopyranose; pentakis[3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoate]; (2R,3R,4S,5R,6S)-4,5,6-tris({3,4-dihydroxy-5-[(3,4,5-trihydroxyphenyl)carbonyloxy]phenyl}carbonyloxy)-2-[({3,4-dihydroxy-5-[(3,4,5-trihydroxyphenyl)carbonyloxy]phenyl}carbonyloxy)methyl]oxan-3-yl 3,4-dihydroxy-5-[(3,4,5-trihydroxyphenyl)carbonyloxy]benzoate; [2,3-dihydroxy-5-[[(2R,3R,4S,5R,6S)-3,4,5,6-tetrakis[[3,4-dihydroxy-5-(3,4,5-trihydroxybenzoyl)oxy-benzoyl]oxy]tetrahydropyran-2-yl]methoxycarbonyl]phenyl] 3,4,5-trihydroxybenzoate; tannic acid, β; 1,2,3,4,6-Pentakis-O-{3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoyl}-β-D-glucopyranose; 1,2,3,4,6-Pentakis-O-{3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoyl}-β-D-glucopyranose [German]; 1,2,3,4,6-Pentakis-O-{3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoyl}-β-D-glucopyranose; 226-562-9; 3042; 5424-20-4; Gallotannin; MFCD00066397; tannic acid; Tanninum; β-D-Glucopyranose, pentakis[3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoate]; (2R,3R,4S,5R,6S)-4,5,6-tris({3,4-dihydroxy-5-[(3,4,5-trihydroxyphenyl)carbonyloxy]phenyl}carbonyloxy)-2-[({3,4-dihydroxy-5-[(3,4,5-trihydroxyphenyl)carbonyloxy]phenyl}carbonyloxy)methyl]oxan-3-yl 3,4-dihydroxy-5-[(3,4,5-trihydroxyphenyl)carbonyloxy]benzoate; (2S,3R,4S,5R,6R)-2,3,5-TRIS[3,4-DIHYDROXY-5-(3,4,5-TRIHYDROXYBENZOYLOXY)BENZOYLOXY]-6-{[3,4-DIHYDROXY-5-(3,4,5-TRIHYDROXYBENZOYLOXY)BENZOYLOXY]METHYL}OXAN-4-YL 3,4-DIHYDROXY-5-(3,4,5-TRIHYDROXYBENZOYLOXY)BENZOATE; (2S,3S)-2-(3,4-Dihydroxyphenyl)-3,5,7-trihydroxy-2,3-dihydro-4H-chromen-4-one; [1401-55-4]; 1,2,3,4,6-penta-O-(3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoyl)-β-D-glucopyranose; 5299277; ACS; Chinese gallotannin; Glycerite; MFCD00006845; tannic acid, 95%; tannic acid; tannic acid, acs reagent; Tannic acid, technical; tannic acid,98%; tannic acid-ar; TANNICACID; β-D-glucose pentakis[3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoate]; Galotannik asit; Tannin; Alkaloit; Abcolgambier; abcolmimosame; abcolquebracho; abcolsumack19; abcoltannicacidtech; Abcoltannicacidusp/kosher; acaciamollissimatannin; 1,2,3,4,6-penta-O-{3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoyl}-D-glucopyranose; 2,3-dihydroxy-5-({[(2R,3R,4S,5R,6R)-3,4,5,6-tetrakis({3,4-dihydroxy-5-[(3,4,5-trihydroxyphenyl)carbonyloxy]phenyl}carbonyloxy)oxan-2-yl]methoxy}carbonyl)phenyl 3,4,5-trihydroxybenzoate; 8186386; 75211; ChEMBL506247; 17286569; 4319; C13452; 16129878; 28F9E0DJY6; (2R,3R,4S,5R)-4,5,6-tris[3,4-dihydroxy-5-(3,4,5-trihydroxybenzoyloxy)benzoyloxy]-2-{[3,4-dihydroxy-5-(3,4,5-trihydroxybenzoyloxy)benzoyloxy]methyl}oxan-3-yl 3,4-dihydroxy-5-(3,4,5-trihydroxybenzoyloxy)benzoate; OC1=CC(=CC(O)=C1O)C(=O)OC1=C(O)C(O)=CC(=C1)C(=O)OC[C@H]1OC(OC(=O)C2=CC(OC(=O)C3=CC(O)=C(O)C(O)=C3)=C(O)C(O)=C2)[C@H](OC(=O)C2=CC(OC(=O)C3=CC(O)=C(O)C(O)=C3)=C(O)C(O)=C2)[C@@H](OC(=O)C2=CC(OC(=O)C3=CC(O)=C(O)C(O)=C3)=C(O)C(O)=C2)[C@@H]1OC(=O)C1=CC(OC(=O)C2=CC(O)=C(O)C(O)=C2)=C(O)C(O)=C1; tannikasit; tanikasit; tannic acid; tannicacid; tanicacid; tannic asit; tannik acid; tanen; tannen;
What is Tannic Acid?
Tannic acid is a specific form of tannin a type of polyphenol. Its weak acidity (pKa around 6) is due to the numerous phenol groups in the structure. The chemical formula for commercial tannic acid is often given as C76H52O46, which corresponds with decagalloyl glucose, but in fact it is a mixture of polygalloyl glucoses or polygalloyl quinic acid esters with the number of galloyl moieties per molecule ranging from 2 up to 12 depending on the plant source used to extract the tannic acid. Commercial tannic acid is usually extracted from any of the following plant parts: Tara pods (Caesalpinia spinosa), gallnuts from Rhus semialata or Quercus infectoria or Sicilian Sumac leaves (Rhus coriaria). According to the definitions provided in external references such as international pharmacopoeia, Food Chemicals Codex and FAO-WHO tannic acid monograph only tannins sourced from the above-mentioned plants can be considered as tannic acid. Sometimes extracts from chestnut or oak wood are also described as tannic acid but this is an incorrect use of the term. It is a yellow to light brown amorphous powder; 2850 grams dissolves in one litre of water (1.7 moles per liter). While tannic acid is a specific type of tannin (plant polyphenol), the two terms are sometimes (incorrectly) used interchangeably. The long-standing misuse of the terms, and its inclusion in scholarly articles has compounded the confusion. This is particularly widespread in relation to green tea and black tea, both of which contain tannin but not tannic acid. Tannic acid is not an appropriate standard for any type of tannin analysis because of its poorly defined composition. Quercitannic and gallotannic acids Quercitannic acid is one of the two forms of tannic acid found in oak bark and leaves.[5] The other form is called gallotannic acid and is found in oak galls. The quercitannic acid molecule is also present in quercitron, a yellow dye obtained from the bark of the Eastern black oak (Quercus velutina), a forest tree indigenous in North America. It is described as a yellowish-brown amorphous powder. Elemental impurity specifications have been set considering ICH Q3D (Guideline for Elemental Impurities). Class 1-3 elements are not likely to be present above the ICH Q3D option 1 limit, unless specified and indicated (*). Tannic acid is a polymer of gallic acid molecules and glucose. It the example there are 3 gallic acid molecules, but normally there are about 8. Because there are different molecular structures for tannic acid it would have been better to speak about tannic acids (in plural). Tannic acid will hydrolyze into glucose and gallic or ellagic acid units. Tannic acid is odourless but has a very astringent taste. Pure tannic acid is a light yellowish and amorphous powder.
Distribution: Tea, nettle, wood, berries, Chinese galls. Oak wood is very rich in tannic acid. When wine is kept in oak kegs some tannic acid will migrate into the wine. High levels of tannic acid are found in some plant galls. These are formed by plants when they are infected by certain insects. These insects pierce the plant leaves and when the egg hatches out into a larva the plant produces a gall which surrounds the larva.
Health Benefits of Tannic Acid : Tannic acid has anti-bacterial, anti-enzymatic and astringent properties. Tannic acid has constringing action upon mucous tissues such as tongue and inside of mouth. The ingestion of tannic acid caused constipation and can be used to treat diarrhoea (in the absence of fever or inflammation). The anti-oxidant and anti-mutagenic properties of tannic acid are beneficial. However, tannic acid should not be used continuously or in high quantities ad it slows down the absorption of iron and possibly other trace minerals. A study by Afsana K et al entitled Reducing effect of ingesting tannic acid on the absorption of iron, but not of zinc, copper and manganese by rats. published by Bioscience, Biotechnology, and Biochemistry (March 2004) concluded that the usual intake of polyphenols is relatively safe, but that a high intake by supplementation or by dietary habit of tannin affects only the iron level. Tannic acid can also reduce the effectiveness of digestive enzymes. Externally, tannic acid is used to treat ulcers, toothache and wounds.
Facts about Tannic Acid
Tannic acid is also used in many industrial applications. The best known is the tanning of leather. Tannic is acid is sometimes used to clear wines. Tannic acids reacts with proteins in wine to form insoluble complexes which sediment or can be filtered. Tannic acid (Acidum tannicum), a commercial form of tannin, is a polyphenol. Its weak acidity (pKa around 10) is due to these phenol groups in the structure. Tannic acid is a basic ingredient in the chemical staining of wood. The tannic acid or tannin is already present in woods like oak, walnut, and mahogany. Tannic acid can be applied to woods low in tannin so chemical stains that require tannin content will react. Tannic acid is the most common mordant for cellulose fibers such as cotton. Tannin is often combined with alum and/or iron. The tannin mordant should be done first as metal mordants combine well with the fiber-tannin complex. The presence of tannic acid in the bark of redwood (Sequoia) is a strong natural defense against wildfire, decomposition and infestation. It is found in the seeds, bark, cones, and heartwood. The chemical formula for commercial tannic acid is often given as C76H52O46, but in fact it contains a mixture of related compounds. Its structure is based mainly on glucose esters of gallic acid. It is a yellow to light brown amorphous powder which is highly soluble in water; one gram dissolves in 0.35 mL of water. A popular home remedy to stop the bleeding after wisdom tooth extraction is applying tea bags (Lipton’s or green tea) in the back of the jaws and biting down, given that the tannic acid in tea helps to clot blood. It is said[weasel words] that soaking feet in tannic acid (or strong tea) can help prevent blisters. But the use of tea for toughening skin appears to be apocryphal, in as much as tea is said to be incapable of tanning leather. Tannic acid was once used as a treatment for strychnine poisoning in the late 19th and early 20th centuries. Tannic acid and quebracho precipitate many times their weight of the abundant leaf protein, ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBPC). The use of this protein in protein precipitation assays for tannin content is described. Extracts of mature foliage of pin, bur, and black oak precipitate 2.01, 0.69, and 0.09 mg RuBPC/ mg (dry wt) of leaf powder extracted, respectively, at pH 6.1. From these measurements it can be calculated that all three of these oak species have sufficient tannins to precipitate all of the RuBPC present in their foliage. At mildly alkaline pHs, however (pH ⩾ 7.5), RuBPC is not precipitated by tannins. Since RuBPCis the most abundant protein present in photosynthetic tissues, often constituting as much as 50% of the soluble proteins and 25% of the total proteins in leaf tissue, the interactions of this protein with tannins are highly relevant to an evaluation of the role of tannins as antiherbivore, digestibility-reducing substances. Our measurements provide no basis for arguing that differences in tannin levels in different species reflect differences in the digestibility of leaf proteins or that tannins have any effect whatsoever upon the digestibility of leaf protein under conditions which normally prevail in most insects’ guts. These findings emphasize the need to test more of the assumptions underlying contemporary interpretations of the importance of tannins in plant herbivore interactions. Tannins are polyphenolic biomolecules with carbohydrate backbones that are found in in a wide range of plants. Tannic acid is a specific tannin that formally contains 10 galloyl (3,4,5-trihydroxyphenyl) units surrounding a glucose center. Commercial tannic acid, however, consists of molecules with 2-12 galloyl moieties. Tannic acid contains no carboxyl groups, but is weakly acidic because of the multiplicity of phenolic hydroxyls. The hydroxyls also cause it to be extremely soluble in water. All regulatory authorities classify it as a nonhazardous substance. As the name implies, tannins are used in leather tanning. Other commercial uses are in dyeing, ink manufacture, paper sizing, food and wine processing, and production of gallic acid and pyrogallol. Tannic acid is a polyphenolic compound. It is a type of the commercially available tannins. It acts as a weak acid. Tannic acid is found in the nutgalls formed by insects on twigs of certain oak trees (Quercus infectoria and other Quercus species). It is removed and used as medicine. In the old days it was used as antidote against different poisons. Nowadays, tannic acid is applied topically for the treatment of cold sores, diaper rash, fever blisters and poison ivy. Tannic acid is also taken by mouth and applied directly for bleeding, chronic diarrhea, dysentery, bloody urine, painful joints, persistent coughs, and cancer. Tannin or tannic acid is used to assist the mordants of cellulose fibres and fabrics. Alum does not bond with cellulose fibres as well as it does with protein fibres. However, tannin bonds well with cellulose. and once treated with tannin, alum will combine with the tannin-fibre complex. Many dyestuffs contain tannin (black oak, pomegranate, cutch, fustic, etc) and do not need an additional tannin. This is a blend of tannins mainly composed of quebracho, which will leave a soft red-brown colour on the cloth. Tannins can be clear or they can add colour to the fibre, and this is an important consideration when selecting a tannin.
• Clear Tannins: “Gallic” – Gallnut, Tara, some Sumacs
• Yellow Tannins: “Ellegic” – Myrobalan, Pomegranate,
• Red-Brown Tannins: “Catechic” – Cutch, Quebracho, Tea leaves, and some Sumacs.
Categories: Compounds used in a research, industrial, or household setting
Properties
Chemical formula: C76H52O46
Molar mass: 1701.19 g/mol
Density: 2.12g/cm3
Melting point : decomposes above 200 °C
Solubility in water: 2850 g/L or 250 g/L[1][2]
Solubility: 100 g/L in ethanol 1 g/L in glycerol and acetone insoluble in benzene, chloroform, diethyl ether, petroleum, carbon disulfide, carbon tetrachloride.
Appearance of solution (20 %; water): conforms
Heavy metals (as Pb): ≤ 0.004 %
As (Arsenic): ≤ 0.0003 %
Acetone (HS-GC): ≤ 5000 ppm
Ethyl acetate (HS-GC): ≤ 5000 ppm
Other residual solvents (ICH Q3C): excluded by production process
Dextrins,rubber,salts,sugars (Ph Eur): conforms
Gum or dextrin (USP): conforms
Gum, dextrin and sucrose (JP): conforms
Resinous matter: conforms
Sulfated ash: ≤ 0.1 %
Loss on Drying (105 °C): ≤ 12.0 %
Loss on drying (105°C, 2 h): max. 9 %
Sulfated ash: max. 0.1 %
Arsenic (As): max. 0.0003 %
Heavy metals (as Pb): max. 0.003 %
Dextrines, gum matters: complying
Resinous matters: complying
Organic volatile impurities (GC): complying
Autoignition Temperature: 980 °F
Ignition Residue: ≤0.1% (as SO4)
Form: powder
Freezing point: 218 °C
UNII: 28F9E0DJY6
CAS number: 1401-55-4
Weight
Average: 1701.206
Monoisotopic: 1700.172974194
Chemical Formula: C76H52O46
InChI Key: LRBQNJMCXXYXIU-YIILYMKVSA-N
InChI: InChI=1S/C76H52O46/c77-32-1-22(2-33(78)53(32)92)67(103)113-47-16-27(11-42(87)58(47)97)66(102)112-21-52-63(119-72(108)28-12-43(88)59(98)48(17-28)114-68(104)23-3-34(79)54(93)35(80)4-23)64(120-73(109)29-13-44(89)60(99)49(18-29)115-69(105)24-5-36(81)55(94)37(82)6-24)65(121-74(110)30-14-45(90)61(100)50(19-30)116-70(106)25-7-38(83)56(95)39(84)8-25)76(118-52)122-75(111)31-15-46(91)62(101)51(20-31)117-71(107)26-9-40(85)57(96)41(86)10-26/h1-20,52,63-65,76-101H,21H2/t52-,63-,64+,65-,76?/m1/s1
IUPAC Name: (2R,3R,4S,5R)-4,5,6-tris[3,4-dihydroxy-5-(3,4,5-trihydroxybenzoyloxy)benzoyloxy]-2-{[3,4-dihydroxy-5-(3,4,5-trihydroxybenzoyloxy)benzoyloxy]methyl}oxan-3-yl 3,4-dihydroxy-5-(3,4,5-trihydroxybenzoyloxy)benzoate
SMILES : OC1=CC(=CC(O)=C1O)C(=O)OC1=C(O)C(O)=CC(=C1)C(=O)OC[C@H]1OC(OC(=O)C2=CC(OC(=O)C3=CC(O)=C(O)C(O)=C3)=C(O)C(O)=C2)[C@H](OC(=O)C2=CC(OC(=O)C3=CC(O)=C(O)C(O)=C3)=C(O)C(O)=C2)[C@@H](OC(=O)C2=CC(OC(=O)C3=CC(O)=C(O)C(O)=C3)=C(O)C(O)=C2)[C@@H]1OC(=O)C1=CC(OC(=O)C2=CC(O)=C(O)C(O)=C2)=C(O)C(O)=C1
PHARMACOLOGY
Indication: Tannic acid is indicated for cold sores, fever blisters, diaper rash, minor burn or sunburn and prickly heat. Vaginally, tannic acid is used as a douche for leukorrhea. It has been also indicated for sore throat, inflamed tonsils, spongy or receding gums, and acute dermatitis.
Pharmacodynamics: Not Available
Mechanism of action : Pharmaceutical grade tannic acid is generally considered to be pentadigalloylglucose. It has an astringent effect. When used internally, it dehydrates tissues when cause reduction in secretions. Externally, it works through formation of protective layer of harder and constricted cells. Tannic acid is thought to exert antiviral and antibacterial effects.
Absorption : After ingestion it has poor bioavailability, due to large size, high affinity to bound to plasma proteins and low lipid solubility. Its main actions are due to local effects.
Metabolism : Orally administered Tannic acid is hydrolysable tannin which releases gallic acid and other compounds upon decomposition.
Tannik Asit Özellikleri ve Kullanm Alanlar:
Ürün Ad : Tannik Asit
Fiziksel Hali : Kat
Tannik Asit Baz bitkilerin kabuk, gövde ve yapraklarndan elde edilen bir materyal karm. Tannik asit, proteinlerle çözünmeyen bileikler meydana getirir. Bu özelliiyle hayvan derilerinin dabalanmasnda kullanlmaktadr. Asrlarca bu maksatla kullanlmtr. Bundan baka, sabit mürekkeple kat ve kuma için ahar (hal) imalinde, mordant olarak, fotorafçlkta ve pirogallol ile gallik asit üretiminde kullanlr. Eskiden tbbi maksatlarla da kullanlmtr. Tannik asit, sarms ve amorf (ekilsiz) bir toz veya lapa eklindedir. Ancak k ve havann etkisiyle yava yava kararr. Suda az, alkolle asetonda iyi çözünür. Tannik asit tek tip bir bileimde deildir. Tanenin baz gruplar hidrolizlenebilen glikoz ve gallik asit (veya dier hidroksibenzoik asitlerin) esterlerinden müteekkildir. Dier grup ise hidrolizlenemeyenflavanollerden ibarettir. Tannik asit çayda vardr. Ticari ölçüde elde edildii en mühim kaynak maz meesidir. Tannik asit, bitkinin scak suyla ekstrakte edilmesiyle (çayn demlenmesi gibi) suya çekilir. Bundan sonra çözelti buharlatrmaya tabi tutulur ve kat halde tanen (veya tannik asit) elde edilir. Tanen, tannik asit (Franszca: tanin – sepi maddesi) olarak da bilinir. Tanenler polifenolik bileikler olup, kolza, bakla, çay ve sorgumda gibi bitkilerden elde edilen, açk sar-kahverengi toz, pul ya da süngersi bir kütle halindeki biçimsiz (amorf) maddelere verilen addr. Tanenler genellikle bitkilerin kök, odun, kabuk, yaprak ve meyvelerinde bulunur. Balca kullanm alan olan dericilik ve boyaclk dnda tanenler arap ve birann berraklatrlmasnda, petrol kuyularndaki sondaj çamurunun akkanlnn artrlmasnda ve buhar kazanlarnn çeperlerinde birikinti oluumunun engellenmesinde kullanlr. Tpta damarlar ve mukozay büzücü etkilerinden ötürü bademcik, farenjit, basur ve baz deri hastalklar ilaçlarnn bileimine girer. Tanenler kimyasal açdan, hidroliz olabilenler tanenler ve kondanse tanenler olmak üzere iki ana grupta incelenir. Birinci grupta yer alan tanenler bir asit ya da enzim eliinde hidroliz olarak gallik asit, pirokateik asit ve eker gibi, suda çözünebilen bileikler verir. Suda az, alkolle asetonda iyi çözünür. Hidroliz olabilen tanenlerin en iyi bilinen örneklerinden biri gallotanenlerdir. Çok daha geni bir grup olan kondanse tanenler ise hidroliz olamazlar. Bunlar s karsnda kuvvetli asitlerle ya da baz yükseltgeyici maddelerle flobafen denen koyu krmz renkli çözünmez bileikler oluturur. Tanenler, aynca tripsin ile a-amilazlarn sindirimdeki aktivitesini, substratlarla kompleks tekil ederek önlerler veya onlara balanarak protein ve niasta sindiriminin aksamasna yol açarlar. Tanenler vitamin BU ile de kompleks oluturarak emilimini önlerler. Tannik asit çayda vardr. Ticari ölçüde elde edildii en mühim kaynak maz meesidir. Mee palamudunda da bol miktarda bulunan tanenler ayn zamanda; antiseptik bileiklerdir. Tannik asit, bitkinin scak suyla ekstrakte edilmesiyle (çayn demlenmesi gibi) suya çekilir. Bundan sonra çözelti buharlatrmaya tabii tutulur ve kat halde tanen (veya tannik asit) elde edilir. Sentetik tannik asitler egzema tedavisi kapsamnda çeitli preparatlar içinde bulunurlar. Tanen, tannik asit (Franszca: tanin – sepi maddesi) olarak da bilinir. Tanenler polifenolik bileikler olup, kolza, bakla, çay ve sorgumda gibi bitkilerden elde edilen, açk sar-kahverengi toz, pul ya da süngersi bir kütle halindeki biçimsiz (amorf) maddelere verilen addr. Tanenler genellikle bitkilerin kök, odun, kabuk, yaprak ve meyvelerinde bulunur. Balca kullanm alan olan dericilik ve boyaclk dnda tanenler arap ve birann berraklatrlmasnda, petrol kuyularndaki sondaj çamurunun akkanlnn artrlmasnda ve buhar kazanlarnn çeperlerinde birikinti oluumunun engellenmesinde kullanlr. Tpta damarlar ve mukozay büzücü etkilerinden ötürü bademcik, farenjit, basur ve baz deri hastalklar ilaçlarnn bileimine girer. Tanenler kimyasal açdan, hidroliz olabilen tanenler ve kondanse tanenler olmak üzere iki ana grupta incelenir. Birinci grupta yer alan tanenler bir asit ya da enzim eliinde hidroliz olarak gallik asit, pirokateik asit ve eker gibi, suda çözünebilen bileikler verir. Suda az, alkolle asetonda iyi çözünür. Hidroliz olabilen tanenlerin en iyi bilinen örneklerinden biri gallotanenlerdir. Çok daha geni bir grup olan kondanse tanenler ise hidroliz olamazlar. Bunlar s karsnda kuvvetli asitlerle ya da baz yükseltgeyici maddelerle flobafen denen koyu krmz renkli çözünmez bileikler oluturur. Tanenler, aynca tripsin ile a-amilazlarn sindirimdeki aktivitesini, substratlarla kompleks tekil ederek önlerler veya onlara balanarak protein ve niasta sindiriminin aksamasna yol açarlar. Tanenler vitamin B ile de kompleks oluturarak emilimini önlerler. Tannik asit çayda vardr. Ticari ölçüde elde edildii en mühim kaynak maz meesidir. Mee palamudunda da bol miktarda bulunan tanenler ayn zamanda; antiseptik bileiklerdir. Tannik asit, bitkinin scak suyla ekstrakte edilmesiyle (çayn demlenmesi gibi) suya çekilir. Bundan sonra çözelti buharlatrmaya tabi tutulur ve kat halde tanen (veya tannik asit) elde edilir. Sentetik tannik asitler egzama tedavisi kapsamnda çeitli preparatlar içinde bulunurlar.
arapçlk
Tanen, arap içeriindeki doal koruyuculardan biridir. arabn rengini, yllandrmaya uygunluunu ve azda brakt tad etkiledii için arapçlkta önemli bir yer tutar. arap içeriine, üzüm kabuu, çekirdei ve dallarnn da üzümlerle birlikte fermante edilmesiyle veya arabn mee fçlarda bekletilmesiyle katlr. Beyaz arap üretiminde kabuksuz üzüm kullanld için krmz arap, genellikle daha yüksek tanen içerir.[1] Tanenin arabn tadna dorudan bir etkisi yoktur fakat çeitli proteinlerle etkileime girmeye eiliminden dolay, azda kuruluk hissi yaratr ve araba acms bir tat verir. Tanen içerii yüksek araplar, süt, süt ürünleri ve krmz et ile tüketimi yaygndr. Tannik Asit Baz bitkilerin kabuk, gövde ve yapraklarndan elde edilen bir materyal karm. Tannik asit, proteinlerle çözünmeyen bileikler meydana getirir. Bu özelliiyle hayvan derilerinin dabalanmasnda kullanlmaktadr. Asrlarca bu maksatla kullanlmtr. Bundan baka, sabit mürekkeple kat ve kuma için ahar (hal) imalinde, mordant olarak, fotorafçlkta ve pirogallol ile gallik asit üretiminde kullanlr. Eskiden tbbi maksatlarla da kullanlmtr. Tannik asit, sarms ve amorf (ekilsiz) bir toz veya lapa eklindedir. Ancak k ve havann etkisiyle yava yava kararr. Suda az, alkolle asetonda iyi çözünür. Tannik asit tek tip bir bileimde deildir. Tanenin baz gruplar hidrolizlenebilen glikoz ve gallik asit (veya dier hidroksibenzoik asitlerin) esterlerinden müteekkildir. Dier grup ise hidrolizlenemeyen flavanollerden ibarettir. Tannik asit çayda vardr. Ticari ölçüde elde edildii en mühim kaynak maz meesidir. Tannik asit, bitkinin scak suyla ekstrakte edilmesiyle (çayn demlenmesi gibi) suya çekilir. Bundan sonra çözelti buharlatrmaya tabi tutulur ve kat halde tanen (veya tannik asit) elde edilir.
Kompozisyon: yüksek molekül arlkl hydrolysable Tannik asit
görünüm: açk sar parçal toz
koku: hemen hemen kokusuz
tad: tarafsz / sktrc tat
younluk: hafif 0,35 – 0,45 g/cm3
saflk: % 92 dk. (üzerinde kuru malzeme-HPLC)
Galik asit: 0.1%max. (HPLC)
ar metaller: 20 ppm max. (FCCIV)
kül içerik: % 0,01 max.
nem: % 7 max.
renk Gardner: 6 (1:10; alkol)
çözünürlük: 3.5-4.5 su
pH: içinde temizleyin (suda % 1)
uygulama
-Medicinal, eczaclk ve kozmetik
Aktif laç çeriklerine Genel Bak Tannik asit:
1. Tannik asit , bir çeit polifenol olan tanenin özel ticari bir eklidir. Zayf asiditesi (pKa yaklak 10), yapsndaki saysz fenol grubundan kaynaklanmaktadr. Ticari taik asit için kimyasal formül genelde dekagalloyl glikoz ile karlk gelen C76H52046 olarak verilir, ancak aslnda molekül bana galloyl moietilerinin says 2 ila 12 arasnda deien bir poligalloyl glucoses veya polygalloyl quinic acid esterlerin bir karmdr Tanik asit çkarmak için kullanlan bitki kayna. Ticari taik asit genellikle aadaki bitki parçalarnn herhangi birinden ekstrakte edilir: Tara pods ( Caesalpinia spinosa ), Rhus semialata veya Quercus infectoria ya da Sicilian Sumac yapraklarnn ( Rhus coriaria ) gallnuts .
2. Tannik asit açk sar amorf bir toz veya parlak köpük pulsu veya sünger benzeri bir katdr. Ac tat ve yaknsama özel kokusu yoktur.
3. Hava ve güne na maruz kaldkça giderek karartlabilir. Souk suda çözünür ve hatta scak suda sonsuz çözünür; Metanol, etanol, aseton ve etil asetatta da çözünür ancak benzen, eter, kloroform, petrol eteri ve karbon disülfide çözünmez.
4. Sülfür sulu solüsyonu zayf asidiktir ve alkalik solüsyonda daha hzl olmak üzere oksidasyon hz daha çabuk oksitlenir ve solüsyonun rengi daha derindir. Üç deerlikli demir iyonlarna rastladnzda, solüsyon mavi-siyah renkte bulunur ve jelatin ile reaksiyona girerek alkaloidler çökelti üretir. Ayn zamanda kurun, alüminyum ve çinko gibi metal iyonlaryla reaksiyona girerek poli-nükleer kompleksler ve özel renklerle çözünmeyen tuzlar üretir. 210 ~ 215 ℃’ye stldnda, tanik asit pirogallik asit ve CO2’ye ayrlabilir.
5. Tannik asitin toksisitesi düüktür, ancak ar miktarda alnmas kusma, karn ars, ishale neden olabilir ve ayrca ölümcül olan dolam sistemi bozukluuna, LD100 6.0 g / kg’ya (sçan, oral yolla) yol açabilir. Yüksek scaklkta, pirogallol ve karbondioksiti üretmek için ayrabilir. Piyasaya sat yapan tanen asit genellikle% 10 nem içerir.
Aktif laç çeriklerinin levi Tannik asit :
1.Tanik asit esas olarak boyarmaddan mordan olarak kullanlr ve ayrca gallik asit, gallik asit pirofosfatnn hazrlanmas için kullanlr. Ayrca deri tabaklama maddeleri, kauçuk phtlatrc, proteinler ve alkaloidler çökelti haline getirmek için, ayrca berilyum, alüminyum, nikel ve bakrn tayini için reaktif yapmak için kullanlabilir.
2.Galik su özütünün buharlatrlmas ve kurutulmasyla elde edilen açk sardan açk kahverengi amorf toz, tanik asit içerii% 80’den fazla olan endüstriyel tanik asittir. Ayrca az miktarda gallik asit, m-galik asit, tris gallic asit ve pentagalloylglukoz içerir.
3.Tanik asit, çekirdek olarak 1, 3, 4, 6-tetra-O-galloil-2-çok-O-galloil-D-glikozu ve bir glikoz molekülü ile 8 ila 9 arasndaki kombinasyon tarafndan oluturulan esterdir gallik asit. Tannik asit, gallik asit ve glikoz olan hidrolizatla asit veya enzimatik hidrolize duyarldr.
4. Bronzlatrma koum deri, deri ve koyun derisi için uygundur. Serin, kuru, havalandrmal bir depoda saklanmas önerilir. Dier tabaklama maddeleri ile birlikte kullanlmas daha iyidir.
5.Bronzlama için arlkl olarak kullanlr. laç, mürekkep, bask, kauçuk ve metalürji endüstrileri ile suyun artlmas için de kullanlabilir
6.Bronzlama, balk tutma a boyama, kazan temizleme, sondaj vb. Için kullanlabilir.
7. laç endüstrisine uygulanan analiz reaktifleri olarak kullanlabilir.
8.Pelt asitleme ve sebze tabaklama solüsyonunun pH ayarlamas için kullanlabilir. Bitkisel bronzlama için kullanlabilir durulama. Güçlü asitliinden dolay, demir kaplara koymamalyz. Serin bir depoda saklanmaldr.
9. Su bazl sondaj viskozitesi azaltc ve çimento geciktirici olarak kullanlabilir.
10.laç endüstrisinde, gallik asit, pirogallol ve sülfat ilaçlarnn hazrlanmas için ham madde olarak kullanlabilir. Tanen, hemostatik bir ilaçtr. Tp alannda, farenjit, bademcik iltihab, hemoroid ve cilt kabarma bozukluklarnn tedavisinde imdiye kadar kullanlmtr, iç uygulama diyare ve barsak kanamalarn azaltabilir.
11.Tannin metaller, alkaloidler ve glikozitler ile tepkimeye girerek bu maddelere kar detoksifikasyon etkisi olan çökelti oluturabilir. Tanen deri bronzlama, mürekkep üretimi, kat ve ipek tutkal, kazan temizleme vb. Için kullanlabilir, ayrca mordent, birann berraklatnc ajan yan sra kauçuun phtlama ajan ve reaktifler için kullanlabilir Berilyum, alüminyum, nikel ve bakr tayini. Kimyasal üretim alannda, galik asit ve gallik asit pirofosfat hazrlamak için kullanlabilir.
12. Çamur sondaj ile urarken, tanen seyreltme için kullanlr. Tanen tozunu kostik soda ile kartrarak tanenlerin alkalin solüsyonu oluturabilir, bu da çamur akn iyiletiren younlatrc çamur ve yapkan çamurun kesme kuvvetini azaltabilir. Aksine, tanenin tozu direkt olarak çamurun içine eklenirse, zayf asitliinden dolay çamurun pH’s azaltlr.
13. Berilyum, alüminyum, galyum, indiyum, niyobyum, tantal ve zirkonyumun ya ve arlk tayini için kullanlabilir. Ayn zamanda bakr, demir, vanadyum, seryum ve kobaltn kolorimetrik analizi için de kullanlabilir. Proteinlerin ve alkaloidlerin çökeltici reaktifleri olarak kullanlabilir. Molibdat kullanarak kurun titrasyonunda harici gösterge olarak da kullanlabilir.
Aktif laç Hammaddelerinin UygulanmasTanik asit:
1.Galik asit ve gallik asit pirofosfat hammaddesi olarak.
2. Uyank. Fiberin sabitlenmesi veya boyanmas için, tuzun temel boyalar olarak.
3.Bir yüzücü ajan. Nadir metalin eritilmesi, germanyumun tozu veya kurun-çinkodan özümlenmesi, çözeltiden toryum, polonyum gibi nadir metallerin ekstraksiyonu ve kalkopirite kurun ve bakr ekstraksiyonu için kullanlabilir.
4.Dönüüm kaplamas. Alüminyum ve alam plakas, çelik, bakr ve çinko yüzey korozyon önleme için kullanlabilir.
5. Gda katk maddeleri, gda antioksidanlar, içecek temizleme ajan, gelimi mürekkep ve bask mürekkebi gibi.
6. Sondaj çamurunun incelticisi.
7. Bir çeit sinerjist olarak kullanlabilir. TMP veya sülfar sinerjist olarak anlan 2,4-Diamino-5-trimetoprimamn sentezine uygulanabilir.
8.Deodorant. Amonyak kokusundan kurtulmak için buzdolaplarnda, depolarnda ve tuvaletlerde kullanlabilir. Ek olarak, tanik asit, heksobendin ve dilazep gibi kalp rahatszl ilaçlarnn sentezi için de kullanlabilir; Ayn zamanda hepatit B’nin tedavisinde bifendatn sentezi için de kullanlabilir; Antimon sentezi -273; istozomiyazis tedavisi.
9.Tanik asit bakterilerin büyümesini ve toksinlerin barsak emilimini inhibe edebilir. shalin önlenmesi ve tedavisinde kullanlabilir. Tbbi tannik asit, içecek, dondurulmu ürünler, ekerleme, dondurma ve et ürünlerinde dorudan kullanlabilir; Yanklarn astringentleri yaralar gibi; Mide hemostatik ajanlar; Enfeksiyonun önlenmesi; Tanin asit gliserol, tanik asit proteini, tanik asit merhemleri, anti-ate ajan (N- bis-amidino morfolino taik asit), salk artrc ajan, böcek kovucular, böcek öldürücüler, radyasyon koruma maddeleri, kontraseptif ajanlar ve özel- Etkili di macunu.
Tannik asit alkollü içecekler (özellikle bira ve arap) açkla kavuturulmas kullanlr. Bir lezzet madde alkolik dahil olmak üzere, gdalarn en büyük kategoride olarak da kullanlr ve alkolsüz içecekler, süt tatllar, donmu candy, pimi mal, gelatins ve pudingler ve et ve et ürünleri. En yüksek ortalama maksimum kullanm seviyesidir yaklak %0,018 (182 ppm) içinde süt tatllar donmu bildirdi.
endüstriyel alan
petrol sektöründe çamur tedavisi ajan olarak. Buna ek olarak, bronzlama Ajan, kara, kauçuk kür Aracs, Aracs proteinler, alkoloidler ya Ajan, mineral inhibitörü, arap ajan, germanyum çkarm ve mavi-siyah mürekkep, vb
ambalaj
25 kg çanta yaplandrmasn açkla kavuturulmas deri üretiminde kullanlabilir veya 25kg lif davul.
12mt (25kg torba) 20 ft konteyner, 9mt(25kg fiber drum)/20 ft konteyner.