Pyrazole
Also known as: 1,2-DIAZOL, 1,2-diazole, 1H-Pyrazol, 1H-Pyrazole, 1H-pyrazole, 2-PyrroMonazole, EINECS 206-017-1, MFCD00005234, PYRAZOLE FOR SYNTHESIS 25 G, PYRAZOLE, 98%, PURE, PYRAZOLE,PURE, Pyrazole ,99%, Pyrazole, pure, 98%, Pyrazole, pure, 98% 100GR, Pyrazole, pure, 98% 25GR, Pyrrazole, [3,2-c]pyrazole, bisazole, diazole, pyrazol
Pyrazole (CAS 288-13-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C3H4N2 and a molecular weight of 68.077 g/mol. Key properties include a melting point of 67-70 °C(lit.), a boiling point of 187.0±9.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 87.5±11.7 °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.
- 288-13-1
- Jingsj CID
- J-19322-7
- Molecular Formula
- C3H4N2
- Molecular Weight
- 68.077 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 67-70 °C(lit.) |
|---|---|
| Boiling Point | 187.0±9.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 87.5±11.7 °C |
| Exact Mass | 68.037445 |
| PSA | 28.68000 |
| LogP | 0.32 |
| Vapor Pressure | 0.9±0.3 mmHg at 25°C |
| Refractive Index | 1.528 |
| Additional Property | SOLUBLE |
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 | 2933199090 |
|---|---|
| Summary | 2933199090. other compounds containing an unfused pyrazole 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 Pyrazole?
The CAS number of Pyrazole is 288-13-1.
What are the molecular formula and molecular weight of Pyrazole?
Pyrazole has molecular formula C3H4N2 and molecular weight 68.077 g/mol.
Is Pyrazole hazardous?
Pyrazole 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 Pyrazole?
For Pyrazole, Upstream Products: 2,6-Dichlorophenylhydrazine hydrochloride, tert-Butyl 1H-pyrazole-1-carboxylate, 2-Pyrazoline; Downstream Products: 1-(Phenylsulfonyl)-1H-pyrazole, Methyl 6-(1H-pyrazol-1-yl)pyridine-3-carboxylate, 1-(4-Nitrophenyl)-1H-pyrazole.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Pyrazole (CAS 288-13-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-19322-7 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.