Myristyl stearate
CAS 17661-50-6
EC 241-640-2
Formula C32H64O2
MW 480.85 g/mol
Oils, Fats & Waxes Personal Care & CosmeticsLubricants & Metalworking Emulsification & DispersionLubricationRheology Modification
Description
Myristyl stearate (CAS 17661-50-6, EC 241-640-2) is a fatty acid ester formed from myristyl alcohol and stearic acid, with the molecular formula C32H64O2. It is also known under trade names such as Hest MS and Hetester MS, and appears in older literature as Spermaceti or NSC 57589. It carries no assigned E-code.
In personal care formulations, myristyl stearate functions as an emollient and consistency agent, reducing friction between skin and formulation surfaces while contributing to texture and spreadability. In lubricant and metalworking applications, it acts as a boundary lubricant, forming a protective film on metal surfaces to reduce wear under load.
Myristyl stearate is subject to REACH registration requirements for EU supply and is handled under HS code 3404905160. Suppliers typically offer it in technical and cosmetic grades. Standard packaging includes fibre drums and bags, with bulk options available depending on supplier.
In personal care formulations, myristyl stearate functions as an emollient and consistency agent, reducing friction between skin and formulation surfaces while contributing to texture and spreadability. In lubricant and metalworking applications, it acts as a boundary lubricant, forming a protective film on metal surfaces to reduce wear under load.
Myristyl stearate is subject to REACH registration requirements for EU supply and is handled under HS code 3404905160. Suppliers typically offer it in technical and cosmetic grades. Standard packaging includes fibre drums and bags, with bulk options available depending on supplier.
Physical Properties
| Melting Point | 50.1 °C |
| Boiling Point | 478.77°C (rough estimate) |
| Density | 0.8733 (rough estimate) |
| Refractive Index | 1.4806 (estimate) |
| Log P | 15.051 (est) |
Trade & Regulatory
| HS Code | 3404905160 |
Other Names
Hest MSSPERMACETISPERMACETTIHetester MSCrodamol MS-VKemester 1418Schercemol MSSPERMACETTI WAXCETYL ESTERS WAX
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