Sodium Stearyl Fumarate
AKA “4070-80-8, Sodium monostearyl fumarate, SODIUM OCTADECYL FUMARATE, 7CV7WJK4UI, DTXSID901021880, RefChem:184103, DTXCID001506817, 223-781-1, Sodium 2-octadecylfumarate
Ingredient
Ingredient Facts
Sodium stearyl fumarate
AKA: 4070-80-8, Sodium monostearyl fumarate, SODIUM OCTADECYL FUMARATE, 7CV7WJK4UI, DTXSID901021880, RefChem:184103, DTXCID001506817, 223-781-1, Sodium 2-octadecylfumarate
Ingredient · Bulking · EWG: 1
Plant-Derived
Clean
Sodium octadecyl fumarate
Formula
C22H39NaO4
Mol. Weight
390.50
CAS #
4070-80-8
Form
Powder
See origin →
Functions
Bulking
Anti-Inflammatory
Antimicrobial
Fights Acne
Adds volume
Traditional Use
Synthetic conditioning agent created in the mid-20th century by combining stearic acid with fumaric acid. Developed to improve texture and conditioning properties in skincare and cosmetic formulations.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Non-Comedogenic
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR