Straight Esters

SierraEster BS

Chemical Name / INCI:

Butyl Stearate

CAS #:

123-95-5

Chemical Family:

Esters > Straight Esters

OVERVIEW

SierraEster BS (Butyl Stearate) is a low-viscosity ester synthesized from stearic acid and butyl alcohol. It provides lubricity, emollience, and plasticizing benefits across multiple applications. In cosmetics and personal care formulations, it enhances spreadability, absorption, and skin softness, making it a valuable emollient. In industrial uses, SierraEster BS contributes thermal stability and low volatility, serving effectively in lubricants and other specialty formulations where durability and performance are required.

CERTIFICATIONS & REGULATORY

  • Listed on the EPA Safer Choice Chemical Ingredient List (SCIL)
  • Biodegradable

APPLICATIONS

  • Cosmetics
  • Hair Care
  • Lubricants
  • Skin Care

TYPICAL PROPERTIES

Appearance: Clear Colorless to Pale Straw
Gardner Color: 1-2
% Moisture: 0-0.1%
Acid Value: 0.0-5.0
Odor: No Butanol Smell
Saponification Value: 165-180

FUNCTIONS

  • Emollient
  • Lubricant
  • Plasticizer