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-
External database identifiers
- ChEBI:CHEBI:44111
- ChEMBL:CHEMBL358697
- EPA DTXSID:DTXSID8026775
- PubMed:35151785
- PubMed:29852215
- PubMed:23061093
- PubMed:23044269
- PubMed:23041923
- PubMed:22967523
- PubMed:22965623
- PubMed:22957789
- PubMed:22922532
- PubMed:22898753
- PubMed:22881121
- PubMed:22842393
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.
- Boiling Point: 111 °C AT 15 MM HG Source: Hazardous Substances Data Bank (HSDB)
- Boiling Point: 110.00 to 111.00 °C. @ 15.00 mm Hg Source: Human Metabolome Database (HMDB)
- Boiling Point: 110-111 °C (15 mmHg) Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
- Color/Form: CLEAR LIQUID Source: Hazardous Substances Data Bank (HSDB)
- Color/Form: AMORPHOUS CRYSTALS Source: Hazardous Substances Data Bank (HSDB)
- Density: 1.218 AT 21 °C Source: Hazardous Substances Data Bank (HSDB)
- Density: 1.220-1.226 (20 °C) Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
- Density: 1.218 @ 21°C Source: PAC Chemical Database, U.S. Department of Energy
- Dissociation Constants: PKA: 4.34 Source: Hazardous Substances Data Bank (HSDB)
- Flash Point: 93 °C Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- LogP: 0.430 Source: Human Metabolome Database (HMDB)
- Melting Point: 16.8 °C Source: Hazardous Substances Data Bank (HSDB)
- Melting Point: 16.8 °C Source: Human Metabolome Database (HMDB)
- Odor: STRONG & ACRID, SULFIDE LIKE ODOR Source: Hazardous Substances Data Bank (HSDB)
- Physical Description: Liquid Source: EPA Chemical Data Reporting (CDR)
- Physical Description: Clear liquid or solid; [HSDB] Colorless liquid with a stench; mp = 17-19 deg C; [MSDSonline] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Physical Description: Liquid Source: Human Metabolome Database (HMDB)
- Physical Description: Clear colourless to pale yellow oily liquid; Roasted sulphureous aroma Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
- Refractive Index: INDEX OF REFRACTION: 1.4911 AT 20 °C/D Source: Hazardous Substances Data Bank (HSDB)
- Refractive Index: 1.490-1.496 Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
- Solubility: SOL IN WATER, ALCOHOL, BENZENE, & ETHER Source: Hazardous Substances Data Bank (HSDB)
- Solubility: Soluble Source: Human Metabolome Database (HMDB)
- Solubility: Practically insoluble or insoluble in water Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
- Solubility: Soluble (in ethanol) Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
- Vapor Pressure: 0.04 [mmHg] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- 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
- Consumer Uses: Plasticizer Source: EPA Chemical Data Reporting (CDR)
- Industry Uses: Plasticizer; Chain transfer agent Source: EPA Chemical Data Reporting (CDR)
- Sources/Uses: Used as a stabilizer, antioxidant, catalyst, chemical intermediate, and experimental convulsant agent; [HSDB] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Uses: STABILIZER; ANTIOXIDANT; CATALYST; CHEMICAL INTERMEDIATE Source: Hazardous Substances Data Bank (HSDB)
- Uses: HAS BEEN TRIED IN COLD-WAVE PREPARATIONS Source: Hazardous Substances Data Bank (HSDB)
- Uses: AS EXPERIMENTAL CONVULSANT AGENT Source: Hazardous Substances Data Bank (HSDB)
- Uses: CHEM INT FOR 3,3'-THIODIPROPIONIC ACID-MAY BE UNISOLATED Source: Hazardous Substances Data Bank (HSDB)
- Uses: For more Uses (Complete) data for 3-MERCAPTOPROPIONIC ACID (8 total), please visit the HSDB record page. Source: Hazardous Substances Data Bank (HSDB)
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
| Source | Result | Checked |
|---|---|---|
| EMBL-EBI ChEBI | Exact match | 2026-08-31 |
| NIH PubChem PUG-View | Exact match | 2026-08-31 |
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.