2-Chloro-5-(methylthio)benzoic acid
Also known as: 2-Chloro-5-methylsulfanylbenzoic acid, 2-Chloro-5-(methylsulfanyl)benzoic acid, 5-Methylthio-2-chlorobenzoic acid, Benzoic acid, 2-chloro-5-(methylthio)-
2-Chloro-5-(methylthio)benzoic acid (CAS 51546-12-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H7ClO2S and a molecular weight of 202.658 g/mol. Key properties include a melting point of 136-137ºC(lit.), a boiling point of 342.4±32.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 160.9±25.1 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 51546-12-4
- Jingsj CID
- J-44519-2
- Molecular Formula
- C8H7ClO2S
- Molecular Weight
- 202.658 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 136-137ºC(lit.) |
|---|---|
| Boiling Point | 342.4±32.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 160.9±25.1 °C |
| Exact Mass | 201.985519 |
| PSA | 62.60000 |
| LogP | 3.04 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.627 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2930909090 |
|---|---|
| Summary | 2930909090. other organo-sulphur compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 2-Chloro-5-(methylthio)benzoic acid?
The CAS number of 2-Chloro-5-(methylthio)benzoic acid is 51546-12-4.
What are the molecular formula and molecular weight of 2-Chloro-5-(methylthio)benzoic acid?
2-Chloro-5-(methylthio)benzoic acid has molecular formula C8H7ClO2S and molecular weight 202.658 g/mol.
Is 2-Chloro-5-(methylthio)benzoic acid hazardous?
2-Chloro-5-(methylthio)benzoic acid has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
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-Chloro-5-(methylthio)benzoic acid (CAS 51546-12-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-44519-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.