Caprylhydroxamic Acid

Functions
Preservative
Chelating agent
CAS Number(s)
7377-03-9
EINECS number(s)
230-936-7
FDA UNII
UPY805K99W

Caprylhydroxamic Acid (CHA) is a hydroxamic acid used in personal care formulations as a preservative suppressing microbial growth and a chelating agent making complexes with metal ions. Its origin can be natural or synthetic.

As a preservative, caryhydroxamic acid is effective against bacteria, yeast, and mold in the slightly acidic to neutral pH 4-7.5 range, which is optimal for skincare applications. It is soluble in glycols and glycerin and can be easily incorporated in almost all formulations, from anhydrous systems to creams and lotions.

Caryhydroxamic acid is compatible with a wide range of ingredients used in personal care products. Still, it can react with some mineral smectite clays containing iron ions and form slightly orange- to red-colored complexes.

Thanks to the hydroxamic origin of Caprylhydroxamic acid, it can act as a chelating ligand and make complexes with metal ions. Hydroxamic acids can form complexes with iron, lead, and other metal ions. Caprylhydroxamic acid also acts as a chelating agent, protecting the product and the skin from heavy metal contamination and its possible harmful effects.
Synonyms
CHA
Octanamide, N-Hydroxy-

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