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Caprylhydroxamic acid

CAS 7377-03-9 · 0/100 · High conf.

Also registered as 1 other CAS number

23261-75-8

Caprylhydroxamic acid chemical structure

Concern score

0/100Low concern — well-established and permitted without restriction (CIR safe as used; EU CosIng).
High confidence

Caprylhydroxamic acid in plain language

What it is

On cosmetic ingredient lists it appears as “Potassium hydrogen caprylhydroxamate”.

Also known as Potassium hydrogen caprylhydroxamate · Octanohydroxamic acid · Octanamide, N-hydroxy- · N-Hydroxyoctanamide · N-Hydroxy octanamide · AldrichCPR N-Hydroxyoctanamide

Show all 14 names

Octanohydroxamsaeure · Octanohydroximic acid · Octanoylhydroxamic acid · Taselin · UNII-UPY805K99W · capryl hydroxamic acid · caprylohydroxamic acid · octanehydroxamic acid

What it does

Used in cosmetics as a chelating agent.

  • Chelating
  • Preservative
  • Chelating agent
Is it a concern?
Low concern: no hazard classifications on record. It is listed for cosmetic use in the EU.

Why it's flagged

EPA CPDat observed this chemical in 810 composition records across product categories including Personal care.

The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.

Regulation

No restrictions found. Caprylhydroxamic acid appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Beauty
  • Cleaning
  • EUCosIngActive2 entries
    • Listed in CosIng inventory for cosmetic use.Source →
    • Potassium Hydrogen Caprylhydroxamate is the organic compound that conforms to the formulaSource →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 810 composition records across product categories including Personal care. EPA CPDat classifies this chemical for functional uses including Chelating agent, Preservative.
    • EPA CPDat observed this chemical in 810 composition records across product categories including Personal care. EPA CPDat classifies this chemical for functional uses including Chelating agent, Preservative.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
    • openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

No expert opinion on file for Caprylhydroxamic acid. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

  • SCCS

    EU Scientific Committee on Consumer Safety

    No SCCS opinion on file.

  • CIR

    Cosmetic Ingredient Review (US expert panel)

    No CIR safety assessment on file.

Evidence & sources

No graded research studies for Caprylhydroxamic acid yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

6 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →

  • EPA Chemical and Products Database

    exposure · updated September 2019

    Open →

  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →

  • FDA GSRS UNII

    registry · updated 2026-02-26

    Open →

  • openFDA Substance

    registry · updated 2026-05-24

    Open →

  • PubChem Live Enrichment

    chemistry · updated 2026-05-17

    Open →
Reference links (1)
Openfda substance

chemicalbook.com

Read →

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Food use

Food-use source coverage is present in the current record.

Good fit

The ingredient appears in food-oriented source coverage or allowed-use references, which makes food use easier to support than a context with no domain signal at all.

Fragrance avoidance

No fragrance-linked caution surfaced in the current profile.

Good fit

This ingredient does not currently read as a fragrance-linked driver in the published evidence and hazard profile.

Where it has been recorded

How often EPA CPDat has listed Caprylhydroxamic acid in a product composition. These are source records, not Greenveil catalog products.

Source records

810

Named organisations

6

Personal care

Typical roles

ChelatingPreservativeChelating agent
See products using Caprylhydroxamic acid →

Catalog

Found in these products

Their ingredient lists include Caprylhydroxamic acid; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

See all 174 →Find products without it →