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Official EU label nameGlossary entry 16261

MERCAPTOPROPIONIC ACID

This record confirms an official common ingredient name for EU cosmetic product labelling. It does not by itself confirm that the substance is permitted, unrestricted or safe.

Global evidence snapshot

The resolved identity has matching regulatory evidence in 0 of 13 indexed market datasets: 0 country records and 0 EU Annex records. Every result and evidence gap is listed below.

0 markets with evidence
Markets checked
13
Markets with evidence
0
Evidence gaps
13
Resolved identifiers
2

Resolved substance identity

CAS:107-96-0
EC:203-537-0
Ingredient index records:
MERCAPTOPROPIONIC ACID
Cosmetic functions: DEPILATORY, HAIR WAVING OR STRAIGHTENING, REDUCING

3-Mercaptopropionic acid

Open full local profile
1 matched or reported name
MERCAPTOPROPIONIC ACID

Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name MERCAPTOPROPIONIC ACID.

That is a statement about this inventory, not about the law: no imported rule is not evidence that a substance is permitted. A rule may exist under a different name, under a CAS or EC number this glossary entry does not carry, or in a dataset not yet imported.

Check the markets and their sourcesSearch every market for this name

Chemical identity and properties

PubChem 2D chemical structure for CAS 107-96-0
CAS 107-96-0PubChem CID 6514

3-Mercaptopropionic Acid

3-mercaptopropanoic acid is a mercaptopropanoic acid that is propanoic acid carrying a sulfanyl group at position 3. It has a role as an algal metabolite. It is a conjugate acid of a 3-mercaptopropionate. — ChEBI

IUPAC name
3-sulfanylpropanoic acid
Molecular formula
C3H6O2S
Molecular weight
106.15 g/mol
Exact mass
106.00885060 Da
XLogP3
0.4
Topological polar surface area
38.3 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
3
Covalent units
1
Defined stereocentres
0

Also known as

3-Mercaptopropanoic acid3-Thiopropanoic acid3-Thiopropionic acidbeta-Mercaptopropionic acidPropanoic acid, 3-mercapto-3MPA2-Mercaptoethanecarboxylic acidbeta-Thiopropionic acid
16 more reported names
Thiohydracrylic acidbeta-Mercaptopropanoic acidPropionic acid, 3-mercpato-3 Mercaptopropionic AcidB03TJ3QU9MNSC-437FEMA NO. 4587CHEBI:441113 Mercaptopropanoic AcidAcid, 3-MercaptopropanoicAcid, 3-MercaptopropionicRefChem:502934203-537-0Mercaptopropionic acidHydracrylic acid, 3-thio-Propionic acid, 3-mercapto-
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Evidence from additional scientific databases

EMBL-EBI ChEBI
Exact identifier matchCHEBI:44111

3-mercaptopropanoic acid

A mercaptopropanoic acid that is propanoic acid carrying a sulfanyl group at position 3.

Formula
C3H6O2S
Average mass
106.146 g/mol
Monoisotopic mass
106.00885 Da
Formal charge
0
  • mercaptopropanoic acid — is a (CHEBI:47871)
  • algal metabolite — has role (CHEBI:84735)
  • algal metabolite — has role (CHEBI:84735)
  • mercaptopropanoic acid — is a (CHEBI:47871)
  • 3-mercaptopropionate — is conjugate acid of (CHEBI:86386)
Additional curated names
3-sulfanylpropanoic acid2-mercaptoethanecarboxylic acid3-mercaptopropanoic acid3-mercaptopropionic acid3MPA3-thiohydracrylic acid3-thiolpropanoic acid3-thiopropanoic acid3-thiopropionic acidBETA-MERCAPTOPROPIONIC ACIDbeta-mercaptopropionic acidbeta-thiopropionic acid
Cross-references from this source
  • REGISTRY_NUMBER: 101294 — Gmelin
  • REGISTRY_NUMBER: 773807 — Reaxys
  • CAS: 107-96-0 — NIST Chemistry WebBook
  • CAS: 107-96-0 — ChemIDplus
  • MANUAL_X_REF: CPD-7673 — MetaCyc
  • MANUAL_X_REF: HMDB0041604 — HMDB
  • MANUAL_X_REF: MPT — PDBeChem

Mapped by: Exact CAS cross-reference in the ChEBI compound record. Source updated: 2015-07-09. Retrieved: 2026-08-31. Open source record

NIH PubChem PUG-View
Exact identifier match6514

Attributed physical-property, hazard, environmental and use annotations.

  • Note: This chemical does not meet GHS hazard criteria for 3.8% (36 of 942) of reports. Source: European Chemicals Agency (ECHA)
  • Signal: Danger Source: European Chemicals Agency (ECHA)
  • GHS Hazard Statements: H290 (76.4%): May be corrosive to metals [Warning Corrosive to Metals]; H301 (96.2%): Toxic if swallowed [Danger Acute toxicity, oral]; H311 (10.2%): Toxic in contact with skin [Danger Acute toxicity, dermal]; H314 (95.9%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]; H318 (76.4%): Causes serious eye damage [Danger Serious eye damage/eye irritation]; H332 (77.7%): Harmful if inhaled [Warning Acute toxicity, inhalation] Source: European Chemicals Agency (ECHA)
  • Precautionary Statement Codes: P234, P260, P261, P262, P264, P264+P265, P270, P271, P280, P301+P316, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P330, P361+P364, P363, P390, P405, P406, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
  • ECHA C&L Notifications Summary: Aggregated GHS information provided per 942 reports by companies from 16 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Reported as not meeting GHS hazard criteria per 36 of 942 reports by companies.; There are 15 notifications provided by 906 of 942 reports by companies with hazard statement code(s).; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
  • Signal: Danger Source: NITE-CMC
  • GHS Hazard Statements: H301: Toxic if swallowed [Danger Acute toxicity, oral]; H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]; H318: Causes serious eye damage [Danger Serious eye damage/eye irritation]; H332: Harmful if inhaled [Warning Acute toxicity, inhalation]; H335: May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]; H370: Causes damage to organs [Danger Specific target organ toxicity, single exposure] Source: NITE-CMC
  • Precautionary Statement Codes: P260, P261, P264, P264+P265, P270, P271, P280, P301+P316, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P308+P316, P316, P317, P319, P321, P330, P363, P403+P233, P405, and P501 (click each P-code to see the statement) Source: NITE-CMC

Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record

Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.

Additional source coverage and match status
SourceResultChecked
EMBL-EBI ChEBIExact match2026-08-31
NIH PubChem PUG-ViewExact match2026-08-31

A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Additional authoritative substance research

Each link searches that source for this identity. A link is a research route, not a claim that the source holds an exact record. What each source is, and its legal weight

Cosmetic Ingredient Review safety assessmentsFDA Global Substance Registration SystemILO/WHO International Chemical Safety CardsJapan NITE-CHRIPNIOSH Pocket Guide to Chemical HazardsOECD eChemPortalUS EPA CompTox CTX APIs

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Official source and scope

Imported from Commission Implementing Decision (EU) 2025/1175 (dataset version EU 2025/1175). The glossary supplies common ingredient names for the ingredient list required by Article 19(1)(g); it is not an approval or safety list.

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