Cetearyl alcohol
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Cetearyl alcohol
structure -
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CAS No:
67762-27-0
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Formula:
C18H38O.C16H34O
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Chemical Name:
Cetearyl alcohol
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Synonyms:
C16-18-Alkylalcohol;LANETTE AOK;CETYL ALCOHOL - STEARYL ALCOHOL;CETEARYL ALCOHOL;CETOSTEAROL;Alkohole, C16-18;CETOSTEARYL ALCOHOL, USP;Ecorol 68/30: Cetostearyl Alcohol (30:70) Pastilles
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CAS No:
Description
White or pale yellow, wax-like mass, plates, flakes or granules
Waxy white solid with a mild soapy odor. Floats on water. (USCG, 1999)
Waxy white solid with a mild soapy odor. Floats on water. (USCG, 1999)
Cetostearyl alcohol (synonyms: cetearyl alcohol, cetyl stearyl alcohol; CAS No. 8005-44-5 and 67762-27-0) is a mixture of saturated fatty alcohols. It contains 65 to 80% stearyl alcohol (C18H37OH, 1-octadecanol) and 20 to 35% cetyl alcohol (C 16H33OH, 1-hexadecanol). The European Pharmacopoeia requires a content of stearylalcohol not less than 40% and that the sum of the contents of cetyl alcohol and of stearylalcohols is not less than 90%. Cetostearylalcohol is obtained by reduction of the appropriate fatty acids in coconut oil and palm kernel oil. Cetostearylalcohol is also a natural component in whale oil (spermaceti).
Cetearyl alcohol is a white or pale yellow, wax-like mass, plates, flakes or granules that is a combination of cetyl and stearyl alcohols, which occur naturally in plants and animals.
Cetearyl alcohol Basic Attributes
512.941
512.55300
267-008-6
2DMT128M1S
TSCA listed
DTXSID0028323
White to Off-White
Characteristics
40.5
Cetearyl alcohol has emulsifying and stabilizing properties, and is also known as cetylstearyl alcohol and Lanette O. It is essentially a mixture of two long‐chained stereoisomers, cetyl and stearyl alcohol. These alcohols are components of lanolin.
11.70020
Waxy white solid with a mild soapy odor. Floats on water. (USCG, 1999)
0.8[at 20℃]
51 - 53°C
330.79℃[at 101 325 Pa]
greater than 270° F (USCG, 1999)
1.46
72.197μg/L at 25℃
0.001Pa at 25℃
The acute oral toxicity of cetostearyl alcohol was tested in Wistar rats. The LD 50 was greater than 10000 mg/kg bw.
Non flammable
at 100.00%. mild waxy
15.76[at 20 ℃]
Insoluble in water.
Alcohols and Polyols
Acetyl bromide reacts violently with alcohols or water [Merck 11th ed. 1989]. Mixtures of alcohols with concentrated sulfuric acid and strong hydrogen peroxide can cause explosions. Example: An explosion will occur if dimethylbenzylcarbinol is added to 90% hydrogen peroxide then acidified with concentrated sulfuric acid. Mixtures of ethyl alcohol with concentrated hydrogen peroxide form powerful explosives. Mixtures of hydrogen peroxide and 1-phenyl-2-methyl propyl alcohol tend to explode if acidified with 70% sulfuric acid [Chem. Eng. News 45(43):73. 1967; J, Org. Chem. 28:1893. 1963]. Alkyl hypochlorites are violently explosive. They are readily obtained by reacting hypochlorous acid and alcohols either in aqueous solution or mixed aqueous-carbon tetrachloride solutions. Chlorine plus alcohols would similarly yield alkyl hypochlorites. They decompose in the cold and explode on exposure to sunlight or heat. Tertiary hypochlorites are less unstable than secondary or primary hypochlorites [NFPA 491 M 1991]. Base-catalysed reactions of isocyanates with alcohols should be carried out in inert solvents. Such reactions in the absence of solvents often occur with explosive violence [Wischmeyer 1969].
Refrigerator
Safety Information
Fire Extinguishing Agents Not to Be Used: Water may be ineffective. Fire Extinguishing Agents: Dry chemical, foam, carbon dioxide (USCG, 1999)
Goggles or face shield; rubber gloves. (USCG, 1999)
Drug Information
When used in skin care, cetearyl alcohol is completely safe for skin! Although some alcohol for skin can definitely be drying and irritating, fatty alcohols like cetearyl alcohol are the opposite. In fact, they help nourish and moisturize the skin and help give cosmetics their consistency (otherwise, you’d have a big, gloopy, gloppy mess in every jar!).The Cosmetic Ingredient Review (CIR) Expert Panel concluded in 1988 that fatty alcohols, including cetearyl alcohol, are safe for use in cosmetic products. A subsequent 2005 review confirmed these results.In clinical studies, cetearyl alcohol was found to have no significant toxicity and was non-mutagenic.
EYES: flush with water; if irritation persists, see a doctor. SKIN: wipe off, wash with soap and water. (USCG, 1999)
1-octadecanol, mixed with 1-hexadecanol
Cetearyl alcohol Use and Manufacturing
Cetostearyl alcohol, cetearyl alcohol or cetylstearyl alcohol is a mixture of fatty alcohols, consisting predominantly of cetyl and stearyl alcohols and is classified as a fatty alcohol. It is used as an emulsion stabilizer, opacifying agent, and foam boosting surfactant, as well as an aqueous and nonaqueous viscosity-increasing agent. It imparts an emollient feel to the skin and can be used in water-in-oil emulsions, oil-in-water emulsions, and anhydrous formulations. It is commonly used in hair conditioners and other hair products.
Cetearyl alcohol is a combination of cetyl and stearyl alcohols. Stearyl alcohol is manufactured by transesterification and distillation of coconut or palm kernel oil using a methanol and a zinc catalyst, followed by hydrogenating the resulting methyl esters using a copper catalyst. The catalysts are removed during the fractional distillation phases, so there are little or no metals in the final product.Cetyl alcohol is manufactured by reducing ethyl palmitate (the waxy ester of palmitic acid) with metallic sodium and alcohol or under acidic conditions with lithium aluminum hydride as a catalyst.The final product melts at a temperature higher than that of the human body, which makes it useful for makeup and other things that are warmed by the skin.
Cosmetics -> Emollient; Emulsifying; Emulsion stabilizing; Opacifying; Viscosity controlling
Computed Properties
Molecular Weight:512.9
Hydrogen Bond Donor Count:2
Hydrogen Bond Acceptor Count:2
Rotatable Bond Count:30
Exact Mass:512.55323154
Monoisotopic Mass:512.55323154
Topological Polar Surface Area:40.5
Heavy Atom Count:36
Complexity:267
Covalently-Bonded Unit Count:2
Compound Is Canonicalized:Yes
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