2-Chloro-3-pyridinol
Also known as: 2-Chloro-3-hydroxypyridine, 2-Chloropyridin-3-ol, 2-chlorpyridin-3-ol, 3-Pyridinol, 2-chloro-, 2-Chloro-3-pyridino, MFCD00006235, EINECS 229-635-3
2-Chloro-3-pyridinol (CAS 6636-78-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H4ClNO and a molecular weight of 129.54 g/mol. Key properties include a melting point of 170-172 °C(lit.), a boiling point of 316.2±22.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 145.0±22.3 °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.
- 6636-78-8
- Jingsj CID
- J-2818-2
- Molecular Formula
- C5H4ClNO
- Molecular Weight
- 129.54 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 170-172 °C(lit.) |
|---|---|
| Boiling Point | 316.2±22.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 145.0±22.3 °C |
| Exact Mass | 128.998138 |
| PSA | 33.12000 |
| LogP | 1.27 |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
| Refractive Index | 1.584 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2933399090 |
|---|---|
| Summary | 2933399090. other compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 2-Chloro-3-pyridinol?
The CAS number of 2-Chloro-3-pyridinol is 6636-78-8.
What are the molecular formula and molecular weight of 2-Chloro-3-pyridinol?
2-Chloro-3-pyridinol has molecular formula C5H4ClNO and molecular weight 129.54 g/mol.
Is 2-Chloro-3-pyridinol hazardous?
2-Chloro-3-pyridinol 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 2-Chloro-3-pyridinol?
For 2-Chloro-3-pyridinol, Upstream Products: 2-Chloropyridine-3-boronic acid, 2-Chloropyridine-3-boronic acid pinacol ester, 2-Chloropyridine; Downstream Products: 2-Chloro-3-(benzyloxymethyl)pyridine, 2,6-Dichloro-3-hydroxypyridine, 2-Chloro-4-nitropyridin-3-ol.
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-3-pyridinol (CAS 6636-78-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-2818-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.