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Isostearic acid

CAS 22890-21-7

Also registered as 1 other CAS number

127967-40-2

Concern score

Not assessed — no hazard data yet.

Isostearic acid in plain language

What it is

Also known as 2-Heptylundecanoic acid · Diadol 18GA · Ha 18GA · Isocarb 18 · Isocarb 18T · Undecanoic acid, 2-heptyl-

Show all 8 names

Undecanoic acid, 2-​heptyl- · α-Heptylundecanoic acid

What it does

Used in consumer products as an emulsifier, a surfactant and a cleaning agent.

  • Emulsifier
  • Surfactant
  • Cleaning agent
Is it a concern?
We haven't assessed a concern score for this ingredient yet.

Regulation

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

  • Inactive ingredient in US drugs

Recorded in these product areas

  • Found in consumer products
  • Beauty
  • Cleaning
  • USFDAinactive ingredient database3 entries
    • Route: TOPICAL; Dosage form: CREAM; Potency: 25 %w/wSource →
    • Route: TOPICAL; Dosage form: GEL; Maximum daily exposure: 20 mgSource →
    • Route: TOPICAL; Dosage form: OINTMENT; Potency: NASource →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 626 composition records across product categories including Personal care, Cleaning products and household care. EPA CPDat classifies this chemical for functional uses including Surfactant (surface active agent), Emulsifier, Cleaning agent.
    • EPA CPDat observed this chemical in 626 composition records across product categories including Personal care, Cleaning products and household care. EPA CPDat classifies this chemical for functional uses including Surfactant (surface active agent), Emulsifier, Cleaning agent.Source →

Expert safety opinions

No expert opinion on file for Isostearic 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 Isostearic acid yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

3 data sources

Where this comes from

  • EPA Chemical and Products Database

    exposure · updated September 2018

    Open →

  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →

  • FDA Inactive Ingredient Database

    regulatory · updated 2026-01-09

    Open →

Suitability

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

Fragrance avoidance

Nothing to weigh for this context yet.

No signal in this context

We have no published hazard signal for this ingredient, so we cannot say how it behaves in this context — that is missing evidence, not a clean result.

Where it has been recorded

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

Source records

626

Named organisations

6

Personal careCleaning products and household care

Typical roles

EmulsifierSurfactantCleaning agent
See products using Isostearic acid →

Catalog

Found in these products

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

See all 39 →Find products without it →