3,4,5-Trimethyl-1H-pyrazole
Also known as: 1H-Pyrazole, 3,4,5-trimethyl-, 3,4,5-TRIMETHYL-1H-PYRAZOLE, 3,4,5-Trimethyl-1H-pyrazole AldrichCPR, 3,4,5-Trimethylpyrazole, 3,4,5-trimethyl-1H-pyrazole(SALTDATA: FREE)
3,4,5-Trimethyl-1H-pyrazole (CAS 5519-42-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H10N2 and a molecular weight of 110.157 g/mol. Key properties include a boiling point of 240.5±9.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 107.2±11.7 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 5519-42-6
- Jingsj CID
- J-1035107-2
- Molecular Formula
- C6H10N2
- Molecular Weight
- 110.157 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 240.5±9.0 °C at 760 mmHg |
|---|---|
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 107.2±11.7 °C |
| Exact Mass | 110.084396 |
| PSA | 28.68000 |
| LogP | 1.70 |
| Vapor Pressure | 0.1±0.5 mmHg at 25°C |
| Refractive Index | 1.518 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
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 3,4,5-Trimethyl-1H-pyrazole?
The CAS number of 3,4,5-Trimethyl-1H-pyrazole is 5519-42-6.
What are the molecular formula and molecular weight of 3,4,5-Trimethyl-1H-pyrazole?
3,4,5-Trimethyl-1H-pyrazole has molecular formula C6H10N2 and molecular weight 110.157 g/mol.
Is 3,4,5-Trimethyl-1H-pyrazole hazardous?
3,4,5-Trimethyl-1H-pyrazole has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.
What are the upstream and downstream products of 3,4,5-Trimethyl-1H-pyrazole?
For 3,4,5-Trimethyl-1H-pyrazole, Upstream Products: 3-Methyl-2,4-pentanedione, Nitrogen, 2-Diazopropane.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3,4,5-Trimethyl-1H-pyrazole (CAS 5519-42-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1035107-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.