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2-(4-Aminophenylthio)acetic acid

Also known as: (4-Aminophenylthio)acetic acid, S-(4-Aminophenyl)thioglycolic acid, S-(p-Aminophenyl)mercaptoacetic acid, S-(p-Aminophenyl)thioglycolic acid, (p-Aminophenylthio)acetic acid, 4-Aminothiophenoxyacetic acid, 2-(4-aminophenyl)sulfanylacetic acid, Acetic acid, (4-aminophenyl)thio-, 2-[(4-aminophenyl)thio]acetic acid

2-(4-Aminophenylthio)acetic acid (CAS 104-18-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H9NO2S and a molecular weight of 183.22800 g/mol. Key properties include a melting point of 197-203 °C, a boiling point of 405.3ºC at 760mmHg, a density of 1.35g/cm3 and a flash point of 198.9ºC. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed and H334 — May cause allergy or asthma symptoms if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
104-18-7
Jingsj CID
J-14025-0
Molecular Formula
C8H9NO2S
Molecular Weight
183.22800 g/mol
Category
Organic Acids
Last updated
8/21/2026
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Physicochemical Properties

Melting Point197-203 °C
Boiling Point405.3ºC at 760mmHg
Density1.35g/cm3
Flash Point198.9ºC
Exact Mass183.03500
PSA88.62000
LogP2.02670
Vapor Pressure2.69E-07mmHg at 25°C

GHS Safety & Compliance

Acute Toxicity / Health HazardSignal word: Danger
  • H301 — Toxic if swallowed
  • H334 — May cause allergy or asthma symptoms if inhaled

Frequently Asked Questions

What is the CAS number of 2-(4-Aminophenylthio)acetic acid?

The CAS number of 2-(4-Aminophenylthio)acetic acid is 104-18-7.

What are the molecular formula and molecular weight of 2-(4-Aminophenylthio)acetic acid?

2-(4-Aminophenylthio)acetic acid has molecular formula C8H9NO2S and molecular weight 183.22800 g/mol.

Is 2-(4-Aminophenylthio)acetic acid hazardous?

2-(4-Aminophenylthio)acetic acid has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H334 — May cause allergy or asthma symptoms if inhaled.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "2-(4-Aminophenylthio)acetic acid (CAS 104-18-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-14025-0 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.