Isostearic Acid

Isostearic Acid

AKA “Isooctadecanoic acid, 16-METHYLHEPTADECANOIC ACID, 2724-58-5, 30399-84-9, Heptadecanoic acid, 16-methyl-, LZM5XA0ILL, UNII-LZM5XA0ILL, EINECS 220-336-3, 16-methylmargaric acid, DTXSID1040790”

Synthetic

Ingredient Facts

Isostearic acid

AKA: Isooctadecanoic acid, 16-METHYLHEPTADECANOIC ACID, 2724-58-5, 30399-84-9, Heptadecanoic acid, 16-methyl-, LZM5XA0ILL, UNII-LZM5XA0ILL, EINECS 220-336-3, 16-methylmargaric acid, DTXSID1040790

Synthetic · Buffering · EWG: 1

Synthetic

Skin Conditioner

Synthetic

Clean

16-methylheptadecanoic acid is a methyl-branched fatty acid that is heptadecanoic acid (margaric acid) substituted by a methyl group at position 16. It is a long-chain fatty acid, a branched-chain saturated fatty acid and a methyl-branched fatty acid. It is functionally related to a heptadecanoic acid.

Formula

C18H36O2

Mol. Weight

284.50

CAS #

30399-84-9, 2724-58-5

Form

Liquid

State

Liquid; Liquid, Other Solid

See origin →

Functions

Skin Conditioning

A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.

Buffering

Holds Formula Together

Removes Impurities

Emulsifier

Cleansing Surfactant

Traditional Use

A synthetic branched fatty acid derived from petrochemical processes in the mid-20th century. Designed to mimic natural fatty acids while providing improved stability and emollient properties in skincare formulations.