PEG-8 STEARATE
PEG-8 stearate is a synthetic polymer used primarily as an emulsifier, humectant, and solubilizer in cosmetics, helping to bind moisture to the skin and facilitate the penetration of other ingredients.
PEG-8 stearate is a clear, colorless liquid that is water-soluble and binds water effectively, preventing formulas from drying out and improving the uniformity of cosmetic products.
PEG-8 stearate is produced by ethoxylating stearic acid with 8 moles of ethylene oxide, and its uses extend to cosmetics, pharmaceuticals, industrial cleaning, and even food packaging due to its versatile properties.
CAS Number: 9004-99-3
EC Number: 500-040-5
Chemical Formula: C18H35O9
Molecular Weight: 1,000-1,500 g/mol.
Synonmys: polyoxyl 8 stearate; Poly(oxy-1,2-ethanediyl), .alpha.-(1-oxooctadecyl)-.omega.-hydroxy- (8 mol EO average molar ratio); PEG-8 stearate; Polyethylene glycol monostearate; MACROGOL 8 STEARATE; MACROGOL ESTER 400; MACROGOL MONOSTEARATE 400; OCTADECANOIC ACID, 23-HYDROXY-3,6,9,12,15,18,21-HEPTAOXATRICOS-1-YL ESTER; OCTAETHYLENE GLYCOL STEARATE; PEG 8 STEARATE; PEG-8 stearate; POLY(OXY-1,2-ETHANEDIYL), .ALPHA.-HYDRO-.OMEGA.-HYDROXY-, OCTADECANOATE; POLYETHYLENE GLYCOL 400 STEARATE; POLYETHYLENE GLYCOL 8 MONOSTEARATE; POLYOXYETHYLENE 400 STEARATE; POLYOXYL 400 STEARATE; POLYOXYL 400 STEARATE [II]; POLYOXYL 8 STEARATE; POLYOXYL 8 STEARATE [USAN]; POLYOXYL 8 STEARATE [USP-RS]; PEG-8 stearate; 23-Hydroxy-3,6,9,12,15,18,21-heptaoxatricos-1-yl octadecanoate; Macrogol ester 400; Macrogol stearate 400; PEG 400 monostearate; POE (8) stearate Polyoxyl 8 stearate; Macrogol Stearate; Polyoxyl 8 Stearate (PEG 8 Stearate); MACROGOLSTEARATE400; Octadecanoic acid, 23-hydroxy-3,6,9,12,15,18,21-heptaoxatricos-1-yl ester; Polyethylenglycol-stearat; 17-Hydroxy-3,6,9,12,15-pentaoxaheptadec-1-yl octadecanoate; 26-Hydroxy-3,6,9,12,15,18,21,24-octaoxahexacos-1-yl octadecanoate; 41-Hydroxy-3,6,9,12,15,18,21,24,-27,30,33,36,39-tridecaoxahentetr- acont-1-yl octadecanoate; Macrogol stearate 2000; Octadecanoic acid, 17-hydroxy-3,6,9,12,15-pentaoxaheptadec-1-yl ester; Octadecanoic acid, 26-hydroxy-3,6,9,12,15,18,21,24-octaoxahexacos-1-yl ester; Octadecanoic acid, 41-hydroxy-3,6,9,12,15,18,21,24,27,30,33,36,39-tridecaoxahentetra- cont-1-yl ester; PEG-10 Stearate; Polyethylene glycol monostearate; Polyoxyl 40 Stearate [USAN:BAN:JAN]; Polyoxyl 8 stearate [USAN:BAN]; 40S; 60S; Akyporox S 100; Arosurf 1855E40; Carbowax 1000 monostearate; Carbowax 4000 monostearate; Cerasynt 660; Cerasynt M; Cerasynt MN; Cithrol 10MS; Cithrol PS; Clearate G; Cremophor A; Crill 20,21,22,23; Emanon 3113; Emanon 3199; Emcol H 35-A; Emerest 2640; Emery 15393; Empilan CP-100; Empilan CQ-100; Emulphor VT-650; Emunon 3115; Ethofat 60/15; Ethofat 60/20; Ethofat 60/25; Ethoxylated stearic acid; Glycol polyethylene monostearate #200; Glycol, polyethylene monostearate #6000; Glycols, polyethylene, monostearate; Ionet MS-1000; Kessco X-211; LX 3; Lactine; Lamacit CA; Lipal 15S; Lipal 400-S; Lipo-Peg 4-S; MYRJ 45; MYS 40; MYS 45; Magi 45; Myrj; Myrj 49; Myrj 51; Myrj 52; Myrj 52S; Myrj 53; Myrj solution; Nikkol MYS; Nikkol MYS 4; Nikkol MYS 40; Nikkol MYS 45; Nikkol MYS-25; Nissan Nonion S 15; Nissan Nonion S-2; Nonex 28; Nonex 29; Nonex 36; Nonex 53; Nonex 54; Nonex 63; Nonion S 15; Nonion S 2; Nonion S 4; PEG 1000MS; PEG 100MS; PEG 42; PEG 600MS; PEG stearate; PEG-150 Stearate; PEG-40 Stearate; PEG-8 stearate; PMS No. 1; PMS No. 2; Pegosperse S 9; Perphinol 45/100; Poly(oxy-1,2-ethanediyl), alpha-1-(oxooctadecyl)-omega-hydroxy-; Poly(oxyethylene) stearate; Poly(oxyethylene) stearic acid ester; Polyethylene glycol (100) monostearate; Polyethylene glycol 8 monostearate; Polyethylene glycol monostearate #1000; Polyethylene glycol monostearate #200; Polyethylene glycol monostearate #400; Polyethylene glycol monostearate #6000; Polyethylene oxide monostearate; Polyethylene oxide stearate; Polyethyleneglycols monostearate; Polyethyleneglycols monstearate; Polyoxyethylate (9) stearic acid; Polyoxyethylene (8) stearate; Polyoxyethylene 40 stearate; Polyoxyethylene 50 stearate; Polyoxyethylene monostearate; Polyoxyethylene stearate (mol. Wt. 600-2000); Polyoxyethylene(8)stearate; Polyoxyethylene-(40)-monostearate; Polyoxyethylene-8-monostearate; Polyoxyl 40 Stearate; Polyoxyl 50 stearate; Polystate; Polystate B; Prodhybase 4000; Prodhybase P; S 1004; S 1012; S 1016; S 1042; S 1054; S 1116; S 541; Slovasol MKS 16; Soromin-SG; Stabilisant Delta-118; Stearic acid, monoester with polyethylene glycol; Stearoks 6; Stearoks 920; Stearox 6; Stearox 920; Stearoxa-6; Stenol 8; Trydet SA 40; Trydet SA series; X-489-R; alpha-(1-Oxooctadecyl)-omega-hydroxypoly(oxy-1,2-ethanediyl); PEG-8 stearate, Glyceryl Stearate, Cetearyl Alcohol, Sorbitan Oleate ;Octadecanoic acid, 23-hydroxy-3,6,9,12,15,18,21-heptaoxatricos-1-yl ester;PEG-8 stearate;Polyoxyethylene (8) monostearate;Polyoxyl 8 stearate;
PEG-8 stearate is a synthetic polymer that works to bind moisture to skin and as a solvent for other cosmetic ingredients, helping them penetrate more efficiently.
PEG-8 stearate is polymers of ethylene glycol.
PEG-8 stearate represents the average number of ethylene glycol units.
PEG-8 stearate is used as an emollient in the formulation of cosmetic products.
PEGs are a very broad group of cosmetic ingredients.
PEG-8 stearate is used for synthetic polymers of ethylene oxide.
These polymers may be contaminated with potentially toxic manufacturing impurities such as 1,4-dioxane.
A smallish polymer molecule (created from repeated units of Polyethylene glycol, aka PEG) that’s used as a solubilizer and viscosity control agent.
PEG-8 stearate is a clear, colorless liquid that is water-soluble and water-binding (aka humectant) and can help to solubilize sparingly-water soluble things (e.g. vanilla, perfumes) into water-based formulas.
Thanks to its water-binding ability, PEG-8 stearate also prevents the drying out of formulas, especially when combined with the fellow hygroscopic agent, sorbitol.
PEG-8 stearate is a safe solvent and carrier for cosmetic use.
PEG-8 stearate can act as a solvent in many substances.
PEG-8 stearate is also a safe carrier.
Polyethylene Glycol Stearates are esters of polyethylene glycol and stearic acid.
The PEG Stearates are soft to waxy solids that are white to tan in color.
In cosmetics and personal care products, PEG Stearates are used in skin creams, conditioners, shampoos, body cleansers and soapless detergents.
PEG-8 stearate, ethoxylated with 8 mol EO.
PEG-8 stearate is used in cosmetics/personal care products and as excipient in pharmaceutical applications.
The PEG Stearates are produced from stearic acid, a naturally occurring fatty acid.
The numerical value of each PEG Stearate corresponds to the average number of ethylene oxide monomers in the polyethylene chain.
Polyethylene glycol ingredients may also be named with a number that indicates molecular weight, for example polyethylene glycol (400) stearate is another name for PEG-8 stearate.
PEG-8 stearate Water-Soluble resins are high molecular weight water soluble polymers.
A long chain poly(ethylene oxide PEG-8 stearate is available in a wide range of molecular weights making it an excellent choice for a formulator trying to tailor a specific end viscosity.
As a result of its wide ranging compatibility, PEG-8 stearate is readily used in A variety of applications.
PEG-8 stearate imparts lubricity, binding, water retention, thickening and film formulation.
PEG-8 stearate differentiates itself from other water soluble thickeners by the high wet tack it imparts, PEG-8 stearate’s ability to be used in thermoplastics, and the silky feel.
PEG Stearates are soft to waxy solids, white to tan in color, and most have a faint odor.
In general, the monoesters are soluble in water and alcohol but not in mineral oil; the diesters are soluble in isopropyl alcohol and toluene, and dispersible or soluble in hot water.
The PEG Stearates are non-ionic surf actant.
The monostearates are highly amphiphatic compounds.
The long, 18-carbon stearate chain is lipophiiic; the polyether chain is hydrophilic.
Each ether oxygen atom carries a partial negative charge which attracts polar water molecules, thus potentiating water solubility of the monostearate.
The longer the polyether chain (greater n value), the greater is the hydrophilicity of the ingredient.
The hydrophile-lipophile balance (HLB) value is used to describe the PEG Stearates and facilitate the selection of an ingredient for a particular use.
Typical HLB values are 4.3 for PEG-2 Stearate and 18.8 for PEG-1 50 Stearate.
As any surfactant interacting at an oil-water interface, PEG Stearates align themselves with the hydrophilic polyether part of the molecule dissolved in the aqueous phase and the lipophilic stearate part of the molecule dissolved in the oil phase.
The amphoteric nature of these compounds affords them many of their physical properties and, thus, many of their uses in cosmetic and noncosmetic formulation.
PEG-8 stearate is a synthetic polymer that works to bind moisture to skin and as a solvent for other cosmetic ingredients, helping them penetrate more efficiently.
PEG-8 stearate is an excellent O/W emulsifier and is particularly interesting for skin care formulations.
PEG-8 stearate is used as a surfactant, emulsifier (cosmetics, pharmaceuticals, textile finishes, defoamers, and baked goods), dye assistant, lubricant, and antistatic agent.
PEG-8 stearate is also used in dentifrice compositions and to make creams, lotions, ointments, and pharmaceutical preparations.
Applications of PEG-8 Stearate:
A number of advantages of PEG-8 stearate make this surfactant readily used in industries other than the cosmetic industry.
Industrial cleaning is an important field of industry that needs effective and efficient surfactants.
PEG-8 stearate, with its good anti-electrostatic emulsifying properties, is a popular ingredient in products aimed for industrial cleaning.
As an anti-electrostatic agent, PEG-8 stearate is also used in metalworking processes or in dye baths as a levelling agent.
Applications in cosmetic products:
Emulsifier:
The application of PEG-8 stearate in cosmetics, personal care products or products used in various industries relies heavily on the emulsifying properties of the compound.
Emulsifiers are substances that are responsible for stabilising formulations.
Many cosmetics and industrial products require two naturally unmixable ingredients to be combined.
These are usually oil-in-water or water-in-oil emulsions.
Such combination necessitates the use of an emulsifier such as PEG-8 stearate since PEG-8 stearate gives the right structure and texture to the product.
Humectant:
As a humectant, PEG-8 stearate is responsible for retaining a constant level of moisture.
PEG-8 stearate can absorb moisture and bind with water.
Proper hydration is important, for example, for ensuring proper skin function.
PEG-8 stearate prevents the cosmetic formulation from drying (or crystallisation).
PEG-8 stearate also serves as a solvent for other ingredients contained in cosmetics.
Solubiliser:
The production of cosmetics involves mixing together ingredients of differing chemical nature in order to obtain a uniform texture of the formulation.
The use of PEG-8 stearate in the production process allows to accelerate the distribution of ingredients in the liquid base and to significantly improve the quality of the process.
As a solubiliser, PEG-8 stearate mediates the dissolution process.
PEG-8 stearate is characterised by PEG-8 ability to form a dispersion, which greatly facilitates the final application of the cosmetic formulation.
Other Applications:
Fertiliser production,
Raw material for ester production,
An agent for curing concrete and cement mortars,
Raw material used in self-curing concretes,
Indirect food additive,
Packaging additives.
Purpose and Frequency of Use in Cosmetics:
PEG Stearates are used as surfactants in skin creams, emollients and conditioners, shampoos, body cleansers, and soapless detergents.
PEG Stearate-containing formulations may be applied to the face (creams, emollients, cleansers), axillae (antiperspirants), hair and scalp (shampoos), skin in general (body cleansers, detergents) and the oral and gingival mucosae (toothpastes, dentifrices).
The frequency of application of PEG Stearate products may vary from daily (toothpastes, antiperspirants, skin creams) to occasional use (emollients, shampoos, skin conditioners).
Duration of application can range from seconds(shampoos, toothpastes, body cleansers) to all day (skin conditioners and emollients, antiperspirants).
This occasional or daily use may extend over a period of years.
PEG Stearates are used in over 500 cosmetic formulations.
Most are used at concentrations from less than 0.1 O/O to 10°/~.(zo) Two products list concentrations in the > 1O0/o-25% range
PEG-8 stearate is a PEG ester of stearic acid PEG-8 stearate uses and applications include:
Emulsifier, lubricant, dispersant, leveling agent, solubilizer, viscous control agent, emollient in cosmetics, topical pharmaceuticals, textiles, paints, other industrial uses; surfactant, humectant in cosmetics; plastics antistat; emulsifier, stabilizer in foods, bakery products; in paperpaperboard in contact with aqueousfatty foods; defoamer in food-contact coatings; in cellophane for food packaging; in surfactant lubricants for manufacturing of food-contact metallic articles.
Functions of PEG-8 Stearate:
Emulsifying agent:
Promotes the formation of intimate mixtures between immiscible liquids by modifying the interfacial tension (water and oil).
Humectant:
Maintains the water content of a cosmetic in PEG-8 stearate’s packaging and on the skin.
Surfactant:
Reduces the skin surface tension of cosmetics and contributes to the uniform distribution of the product during PEG-8 stearate’s use.
Properties of PEG-8 Stearate:
The group of synthetic ethylene oxide polymers is generally referred to as PEGs.
These include derivatives of ethylene glycol that are formed by the condensation polymerisation reaction.
The polymer chain structure for polyethylene glycols is varied.
Depending on the number of ethylene glycol units in the molecule, “different” PEGs are distinguished.
PEG-8 stearate is therefore a lauric acid monoglyceride ethoxylated with 8 moles of ethylene oxide.
The CAS number of the compound is 25322-68-3.
PEG-8 stearate is a colourless liquid that dissolves well in water.
PEG-8 stearate characteristic feature are strong hygroscopic properties, which indirectly result in very good solubility of active substances.
PEG-8 stearate is an ethylene glycol derivative with the highest molecular mass and keeps liquid form at room temperature.
Manufacturing of PEG-8 Stearate:
PEG-8 stearate is produced by the polyethoxylation of high quality fatty acids.
They are effective O/W emulsifiers suitable for use in medicated creams and lotions, even in the presence of electrolytes.
They are hydrophilic, water soluble surfactants that display inverse aqueous solubility characteristics with increasing temperature.
They are also stable in the presence of moderately strong acids, alkalis and electrolytes.
Recommended topical usage levels of 0.5-5%.
PEG-8 stearate’s are produced from stearic acid, a naturally occurring fatty acid.
The numerical value of each PEG Stearate corresponds to the average number of ethylene oxide monomers in the polyethylene chain.
Polyethylene glycol ingredients may also be named with a number that indicates molecular weight, for example polyethylene glycol (400) stearate is another name for PEG-8 stearate.
Polyethylene glycols (PEGs) are products of condensed ethylene oxide and water that can have various derivatives and functions.
Since many PEG types are hydrophilic, they are favorably used as penetration enhancers, especially in topical dermatological preparations.
PEGs, together with their typically nonionic derivatives, are broadly utilized in cosmetic products as surfactants, emulsifiers, cleansing agents, humectants, and skin conditioners.
The compounds studied in this review include PEG/PPG-17/6 copolymer, PEG-20 glyceryl triisostearate, PEG-40 hydrogenated castor oil, and PEG-60 hydrogenated castor oil.
Overall, much of the data available in this review are on PEGylated oils (PEG-40 and PEG-60 hydrogenated castor oils), which were recommended as safe for use in cosmetics up to 100% concentration.
Currently, PEG-20 glyceryl triisostearate and PEGylated oils are considered safe for cosmetic use according to the results of relevant studies.
Additionally, PEG/PPG-17/6 copolymer should be further studied to ensure PEG-8 stearate’s safety as a cosmetic ingredient.
Polyethylene glycols (PEGs) are composed of polyether compounds repeating ethylene glycol units according to the constituent monomer or parent molecule (as ethylene glycol, ethylene oxide, or oxyethylene).
Most PEGs are commonly available commercially as mixtures of different oligomer sizes in broadly- or narrowly-defined molecular weight (MW) ranges.
For instance, PEG-10,000 typically designates a mixture of PEG molecules (n = 195 to 265) having an average MW of 10,000.
PEG is also known as polyethylene oxide (PEO) or polyoxyethylene (POE), with the three names being chemical synonyms.
However, PEGs mainly refer to oligomers and polymers with molecular masses below 20,000 g/mol, while PEOs are polymers with molecular masses above 20,000 g/mol, and POEs are polymers of any molecular mass.
Relatively small molecular weight PEGs are produced by the chemical reaction between ethylene oxide and water or ethylene glycol (or other ethylene glycol oligomers), as catalyzed by acidic or basic catalysts.
To produce PEO or high-molecular weight PEGs, synthesis is performed by suspension polymerization.
PEG-8 stearate is necessary to hold the growing polymer chain in solution during the course of the poly-condensation process.
The reaction is catalyzed by magnesium-, aluminum-, or calcium-organoelement compounds.
To prevent coagulation of polymer chains in the solution, chelating additives such as dimethylglyoxime are used.
PEGs, together with their derivatives, do not have definite chemical entities, rather, they are compound mixtures having different chain lengths.
PEGs are used in cosmetics “as is” or in combination with their derivatives in which their 2 terminal primary hydroxyl groups can create mono-, di- and poly-esters, amines, ethers and acetals.
Furthermore, PEGs can create additional compounds and complexes through a reaction in their ether bridges.
Overall, PEG derivatives may include PEG ethers (e.g. laureths, ceteths, ceteareths, oleths, and PEG ethers of glyceryl cocoates), PEG fatty acids (e.g.
PEG laurates, dilaurates, stearates, and distearates), PEG castor oils, PEG amine ethers (PEG cocamines), PEG propylene glycols, and other derivates (e.g., PEG soy sterols and PEG beeswax).
Since many PEG types are hydrophilic, they are favorably used as penetration enhancers, especially in topical dermatological preparations.
Polyethylene glycols (PEGs) and their derivatives are widely used in cosmetics as surfactants, cleansing agents, emulsifiers, skin conditioners, and humectants.
Adding to their use in cosmetics, many PEG compounds also have other applications.
Available information from these uses is included in this assessment where relevant.
In the pharmaceutical industry, for instance, they are used as ointment bases or vehicles for drugs in capsules, tablet and pill binders, suppositories, and liquid prescriptions; and in veterinary drugs as part of parenteral, topical, ophthalmic, oral, and rectal preparations.
Further various applications were found in soaps and detergents, wood preservation, printing, chemical mixtures, as well as in industries that produces textiles, leather, plastics, resins, paper, ceramics, glass, rubber, petroleum, and metal.
Polyoxyethylene sorbitan esters (polysorbates) and polyethylene glycol, with an average molecular weight of 6,000, are permitted as food additives in various food products.
In previous studies, PEGs and various PEG compounds have been reviewed and assessed well to be concluded as relatively safe for use in cosmetics under the present conditions of intended use However, all PEG compounds were not covered in the previous studies due to their wide variety, and the introduction of new entities currently used in cosmetics suggests supplementary evaluation.
Thus, PEG-8 stearate is essential to continuously monitor the safety and risks of PEG-derived products being exposed to consumers using cosmetic products to ensure that no potential health threats will arise, especially when used extensively and chronically.
In this review, we searched for and enumerated the PEG polymers and their derivatives that are used in cosmetics in order to evaluate the safety of their application according to the currently available information in the literature.
Mono-ester of polyethylene glycole with stearic acid.
The number after the product name indicates the average length of the polyethylene glycol chain.
Handling and Storage of PEG-8 Stearate:
Handling:
Avoid creating dust and ensure good ventilation.
Avoid contact with skin and eyes.
Storage:
Store in a cool, dry place away from incompatible materials.
Keep containers tightly closed.
PEG-8 stearate can be stored at room temperature But close the bottle tightly And sealed from direct sunlight or heat, the product is at least 2 years old
Reactivity and Stability of PEG-8 Stearate:
Reactivity:
PEG 8 Stearate is generally stable and non-reactive under normal conditions.
Chemical Stability:
Stable under recommended storage conditions.
Conditions to Avoid:
Avoid high temperatures and open flames.
Incompatible Materials:
Strong acids, bases, and oxidizing agents.
Hazardous Decomposition Products:
May produce carbon oxides and other hazardous products under thermal decomposition.
Safety of cosmetics containing PEG-8 stearate:
An independent scientific body, Cosmetic Ingredient Review (CIR), which evaluates the safety of certain chemicals in cosmetic formulations, has clearly identified PEG-8 stearate as a safe substance.
The chemicals that make up the ethylene glycol derivatives group are not toxic to the skin.
Neither do they cause irritation or allergic reactions.
First Aid Measures of PEG-8 Stearate:
Inhalation:
Move the person to fresh air.
Seek medical attention if symptoms persist.
Skin Contact: Wash with soap and water.
If irritation develops or persists, seek medical advice.
Eye Contact:
Rinse with plenty of water for at least 15 minutes.
Seek medical attention if irritation persists.
Ingestion:
Rinse mouth with water.
Do not induce vomiting.
Seek medical attention if significant ingestion occurs.
Fire Fighting Measures of PEG-8 Stearate:
Suitable Extinguishing Media:
Use foam, dry chemical, or carbon dioxide (CO2). Water may also be used.
Unsuitable Extinguishing Media:
Direct water jet may spread the fire.
Fire Fighting Procedures:
Wear self-contained breathing apparatus (SCBA) and protective clothing.
Cool containers with water spray to prevent rupture.
Hazardous Combustion Products:
May emit smoke, carbon oxides, and other toxic fumes.
Accidental Release Measures of PEG-8 Stearate:
Personal Precautions:
Wear appropriate personal protective equipment (PPE).
Avoid inhaling dust or vapors.
Environmental Precautions:
Prevent entry into waterways, sewers, and soil.
Clean-Up Methods:
Sweep up or vacuum spills and place in appropriate waste containers. Clean the area with soap and water.
Exposure Controls/Personal Protection of PEG-8 Stearate:
Occupational Exposure Limits:
PEG 8 Stearate is not typically classified with specific exposure limits, but general industrial hygiene practices should be followed.
Engineering Controls:
Use local exhaust ventilation to minimize exposure to dust or vapors.
Personal Protective Equipment (PPE):
Respiratory Protection:
Not usually required, but use if exposure limits are exceeded.
Hand Protection:
Wear protective gloves if prolonged contact is anticipated.
Eye Protection:
Safety glasses or goggles recommended.
Skin Protection:
Wear protective clothing if needed.
Impurities of PEG-8 Stearate:
Traces of the reactants, stearic acid and ethylene oxide, and of the catalytic agents used, may remain in the finished product.
The addition of antioxidants or other additives has not been reported.
A reaction product of ethoxylation, 1,4-dioxane, may also be present in trace amounts.
Industry is aware of this possible impurity and thus uses additional purification steps to remove PEG-8 stearate from the ingredient before blending into cosmetic formulations.
Identifiers of PEG-8 Stearate:
CAS Number: 5117-19-1 / 25322-68-3 (generic)
CAS:
9004-99-3
70802-40-3
ChemIDplus: 70802-40-3
NSC Number: 31811
UNII: 2P9L47VI5E
DSSTox Substance ID: DTXSID50221066
Nikkaji Number: J760.413K
NCI Thesaurus Code: C85246
RXCUI: 1367133
CAS Number: 9004-99-3
EC Number (European Community Number): 500-040-5
IUPAC Name: Polyethylene glycol stearate
Chemical Formula: C_18H_35O_9 (as a typical representative formula for PEG esters)
Synonyms: Polyethylene glycol stearate, PEG Stearate
UN Number (for transport): Not typically assigned for PEG 8 Stearate as PEG-8 stearate is generally considered non-hazardous.
HS Code (Harmonized System Code): 3402.90 (This code may vary depending on the specific product and region).
Properties of PEG-8 Stearate:
CAS Number: 9004-99-3
EC Number: 500-040-5
IUPAC Name: Polyethylene glycol stearate
Molecular Weight: Varies depending on the degree of polymerization and the stearic acid content. Typical values are around 1,000-1,500 g/mol.
Chemical Formula: C₁₈H₃₅O₉ (for stearic acid esterified with PEG)
Appearance: White to off-white waxy solid or creamy paste
Odor: Mild or no odor
Melting Point: Approximately 40-60°C (104-140°F)
Density: ~0.9-1.1 g/cm³
Solubility: Soluble in water and organic solvents like ethanol
pH: Neutral to slightly acidic in a 1% aqueous solution
Names of PEG-8 Stearate:
Chem/IUPAC Name:
Poly(oxy-1,2-ethanediyl), .alpha.-hydro-.omega.-hydroxy-, (8 mol EO average molar ratio)