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Sulfur and phosphorus compounds

Propanethioic acid

Also known as thiopropionic acid, propanethioic S-acid, Propanethioic acid (9CI)

CAS 1892-31-5Formula C3H6OSMolar mass 90.15 g/molEC 217-577-1
GHS signal word: Danger. Pictograms: Corrosive
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Propanethioic acid chemical structure, C3H6OS, CAS 1892-31-5
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
1892-31-5
Formula
C3H6OS
Molar mass
90.15 g/mol
EC number
217-577-1
HS code
293090
Category
Sulfur and phosphorus compounds

What is Propanethioic acid?

Plain description, key identifiers and synonyms

Propanethioic acid is a chemical substance with the molecular formula C3H6OS and a molar mass of 90.15 g/mol. Its CAS registry number is 1892-31-5. The IUPAC name is propanethioic S-acid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
propanethioic S-acid
CAS number
1892-31-5 CAS number cross-checked
EC number
217-577-1
Molecular formula
C3H6OS
UNII
YSX8CJ46RR
InChIKey
KOODSCBKXPPKHE-UHFFFAOYSA-N
InChI
InChI=1S/C3H6OS/c1-2-3(4)5/h2H2,1H3,(H,4,5)
SMILES (canonical and isomeric)
CCC(=O)S

Synonyms

  • thiopropionic acid
  • propanethioic S-acid
  • Propanethioic acid (9CI)
  • thiopropionicacid
  • methylthioacetic acid
  • Thiopropionsaure
  • thiopropanoic acid

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
90.15 g/molcalc.
Exact mass
90.0139 Dacalc.
LogP (octanol/water)
0.85calc.
Topological polar surface area
17.07 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
1calc.
Heavy atoms
5calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.67calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS05: Corrosive
Corrosive

Hazard statements

  • H314Causes severe skin burns and eye damage.
  • H318Causes serious eye damage.
Precautionary statements (14)
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P361 + P354If on skin: Take off immediately all contaminated clothing. Immediately rinse with water for several minutes.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P316Get emergency medical help immediately.
  • P317Get medical help.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P363Wash contaminated clothing before reuse.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Propanethioic acid suppliers

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Propanethioic acid price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Propanethioic acid is traded under.

HS 2930.90Indicative HS code

Organo-sulphur compounds, other

World exports in 2024
$5.83B
+0.1% vs 2023, imports $5.93B
2019 to 2024
Top exporters
  1. China40.7%
  2. United States10.9%
  3. Japan9.3%
Top importers
  1. United States13.3%
  2. Brazil12.6%
  3. China6.6%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Propanethioic acid is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Propanethioic acid, based on the data on this page

What is Propanethioic acid?

Propanethioic acid is a chemical substance with the molecular formula C3H6OS and a molar mass of 90.15 g/mol. Its CAS registry number is 1892-31-5. The IUPAC name is propanethioic S-acid.

What is the CAS number of Propanethioic acid?

The CAS registry number of Propanethioic acid is 1892-31-5.

What is the molecular formula and weight of Propanethioic acid?

The molecular formula of Propanethioic acid is C3H6OS and its molar mass is 90.15 g/mol.

Is Propanethioic acid hazardous?

Propanethioic acid carries the GHS signal word "Danger". Main hazards: causes severe skin burns and eye damage, causes serious eye damage. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Propanethioic acid?

Propanethioic acid is usually classified under HS code 293090 (Organo-sulphur compounds, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Propanethioic acid?

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What is the price of Propanethioic acid?

Suppliers quote Propanethioic acid on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Propanethioic acid

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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