EMERCOL C16-18 50:50 MY, cetyl stearyl alcohol; CAS No. 8005-44-5 and 67762-27-0) is a mixture of saturated fatty alcohols.
EMERCOL C16-18 50:50 MY 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%.
EMERCOL C16-18 50:50 MY is obtained by reduction of the appropriate fatty acids in coconut oil and palm kernel oil.
EMERCOL C16-18 50:50 MY is also a natural component in whale oil (spermaceti).
EMERCOL C16-18 50:50 MY Chemical Properties
Melting point: 51 - 53°C
Boiling point: 330.79℃[at 101 325 Pa]
Density: 0.8[at 20℃]
Vapor pressure: 0.001Pa at 25℃
Storage temp.: Refrigerator
Solubility: Practically insoluble in water, soluble in ethanol (96 per cent) and in light petroleum.
When melted, EMERCOL C16-18 50:50 MY is miscible with fatty oils, with liquid paraffin and with melted wool fat.
pka: 15.76[at 20 ℃]
Color: White to Off-White
Water Solubility: 72.197μg/L at 25℃
LogP: 6.73 at 25℃
EPA Substance Registry System: EMERCOL C16-18 50:50 MY (67762-27-0)
EMERCOL C16-18 50:50 MY 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.
EMERCOL C16-18 50:50 MY has emulsifying and stabilizing properties, and is also known as cetylstearyl alcohol and Lanette O.
EMERCOL C16-18 50:50 MY is essentially a mixture of two long‐chained stereoisomers, cetyl and stearyl alcohol.
These alcohols are components of lanolin.
EMERCOL C16-18 50:50 MY (Cetyl-Stearyl Alcohol 50:50 ) is used in the following products: pH regulators and water treatment products, coating products, metal surface treatment products, laboratory chemicals, polymers, and washing and cleaning products.
EMERCOL C16-18 50:50 MY is used as an emulsion stabilizer, opacifying agent, and foam boosting surfactant, as well as an aqueous and nonaqueous viscosity-increasing agent.
EMERCOL C16-18 50:50 MY imparts an emollient feel to the skin and can be used in water-in-oil emulsions, oil-in-water emulsions, and anhydrous formulations.
EMERCOL C16-18 50:50 MY is a combination of cetyl and stearyl alcohols.
EMERCOL C16-18 50:50 MY 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.
EMERCOL C16-18 50:50 MY 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.
EMERCOL C16-18 50:50 MY 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.
Cetostearyl alcohol [NF]
Cetyl-Stearyl Alcohol (50/50)
Cetyl Alcohol: Stearyl Alcohol: Cetearyl Alcohol
Cetostearyl alcohol, Cetylstearyl alcohol, Cetyl/stearyl alcohol