Thiobenzoic acid
Also known as: Benzothioic S-acid, Benzoic acid, thio-, Benzoyl thiol, Monothiobenzoic acid, Thiobenzoic S-acid, Benzenecarbothioic S-acid, Thiobenzoate
Thiobenzoic acid (CAS 98-91-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H6OS and a molecular weight of 138.18700 g/mol. Key properties include a melting point of 15-18 °C(lit.), a boiling point of 122 °C30 mm Hg(lit.), a density of 1.174 g/mL at 25 °C(lit.) and a flash point of >110.0 °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 Nov 3, 2026.
- CAS No.
- 98-91-9
- Jingsj CID
- J-8704-7
- Molecular Formula
- C7H6OS
- Molecular Weight
- 138.18700 g/mol
- Category
- Organic Acids
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 15-18 °C(lit.) |
|---|---|
| Boiling Point | 122 °C30 mm Hg(lit.) |
| Density | 1.174 g/mL at 25 °C(lit.) |
| Flash Point | >110.0 °C |
| Exact Mass | 138.01400 |
| PSA | 55.87000 |
| LogP | 1.75660 |
| Refractive Index | n20/D 1.605(lit.) |
| Additional Property | insoluble |
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 Thiobenzoic acid?
The CAS number of Thiobenzoic acid is 98-91-9.
What are the molecular formula and molecular weight of Thiobenzoic acid?
Thiobenzoic acid has molecular formula C7H6OS and molecular weight 138.18700 g/mol.
Is Thiobenzoic acid hazardous?
Thiobenzoic acid has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of Thiobenzoic acid?
For Thiobenzoic acid, Upstream Products: Benzoyl chloride, benzoic acid, Benzoyl disulfide; Downstream Products: Ethyl thiosalicylate, N-(4-nitrophenyl)benzamide, Benzamide.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Thiobenzoic acid (CAS 98-91-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-8704-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.