2-Hydroxyterephthalic acid
Also known as: 2-hydroxybenzene-1,4-dicarboxylic acid, 1,4-Benzenedicarboxylic acid, 2-hydroxy-, 2,5-Dicarboxyphenol, Terephthalic acid, hydroxy-, 2-Hydroxy-1,4-benzenedicarboxylic acid
2-Hydroxyterephthalic acid (CAS 636-94-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H6O5 and a molecular weight of 182.130 g/mol. Key properties include a melting point of 312-317ºC, a boiling point of 436.9±40.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 232.2±23.8 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 636-94-2
- Jingsj CID
- J-1511514-7
- Molecular Formula
- C8H6O5
- Molecular Weight
- 182.130 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 312-317ºC |
|---|---|
| Boiling Point | 436.9±40.0 °C at 760 mmHg |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 232.2±23.8 °C |
| Exact Mass | 182.021530 |
| PSA | 94.83000 |
| LogP | 2.51 |
| Vapor Pressure | 0.0±1.1 mmHg at 25°C |
| Refractive Index | 1.666 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2918290000 |
|---|---|
| Summary | HS: 2918290000 other carboxylic acids with phenol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) VAT:17.0% MFN tariff:6.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 2-Hydroxyterephthalic acid?
The CAS number of 2-Hydroxyterephthalic acid is 636-94-2.
What are the molecular formula and molecular weight of 2-Hydroxyterephthalic acid?
2-Hydroxyterephthalic acid has molecular formula C8H6O5 and molecular weight 182.130 g/mol.
Is 2-Hydroxyterephthalic acid hazardous?
2-Hydroxyterephthalic acid has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of 2-Hydroxyterephthalic acid?
For 2-Hydroxyterephthalic acid, Upstream Products: 2,5-Dibromoterephthalic acid, 2-Bromoterephthalic acid, 2-Aminoterephthalic acid; Downstream Products: 2-Hydroxy-4-(methoxycarbonyl)benzoic acid, Dimethyl 2-hydroxyterephthalate, Carbon dioxide.
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-Hydroxyterephthalic acid (CAS 636-94-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1511514-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.