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Calcium sulfidoacetate--water (1/1/3)

CAS 29820-13-1

Also registered as 1 other CAS number

65208-41-5

Calcium sulfidoacetate--water (1/1/3) chemical structure

Concern score

Not assessed — no hazard data yet.

Calcium sulfidoacetate--water (1/1/3) in plain language

What it is

On cosmetic ingredient lists it appears as “Calcium thioglycolate hydroxide”.

Also known as Calcium thioglycolate hydroxide · Acetic acid, mercapto-, calcium salt (1:1), trihydrate · calcium;2-sulfidoacetate;trihydrate · Acetic acid, 2-mercapto-, calcium salt, hydrate (1:1:3) · C2H8CaO5S · F095807

Show all 7 names

mercaptoacetic acid calcium salt

What it does

Used in cosmetics as a depilatory.

  • Depilatory
Is it a concern?
We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.

Regulation

No restrictions found. Calcium sulfidoacetate--water (1/1/3) appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Industrial
  • EUCosIngActiveRestriction: III/2a
  • USEPAcommercial use observedEPA CPDat observed this chemical in 4 composition records across product categories including Laboratory supplies. EPA CPDat classifies this chemical for functional uses including Depilatory.
    • EPA CPDat observed this chemical in 4 composition records across product categories including Laboratory supplies. EPA CPDat classifies this chemical for functional uses including Depilatory.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 Calcium sulfidoacetate--water (1/1/3). 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 Calcium sulfidoacetate--water (1/1/3) 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 2019-12-20

    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 →

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 Calcium sulfidoacetate--water (1/1/3) in a product composition. These are source records, not Greenveil catalog products.

Source records

4

Named organisations

1

Laboratory supplies

Typical roles

Depilatory
See products using Calcium sulfidoacetate--water (1/1/3) →

Catalog

Found in these products

Cosmetic and personal-care products that list Calcium sulfidoacetate--water (1/1/3) are shown first. Their ingredient lists include Calcium sulfidoacetate--water (1/1/3); each product's own rating depends on its whole formula, so it is shown on the product page, not here.

See all 1 →Find products without it →