3,5-Dimethylpyrazole
Also known as: 1H-Pyrazole, 3,5-dimethyl-, 3,5-Dimethyl-1H-pyrazole, Pyrazole, 3,5-dimethyl-, 3,5-dimethylpyrazol, 1(H)-3,5-dimethylpyrazole, TH 564, NSC 8729, U 6245, Trixene DP 8692, 3,5-Dwumetylopirazolu, EINECS 200-657-5, MFCD00005243, TIMTEC-BB SBB004377, LABOTEST-BB LT00107055
3,5-Dimethylpyrazole (CAS 67-51-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H8N2 and a molecular weight of 96.130 g/mol. Key properties include a melting point of 105-108 °C(lit.), a boiling point of 218.0±0.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 90.5±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.
- 67-51-6
- Jingsj CID
- J-42314-3
- Molecular Formula
- C5H8N2
- Molecular Weight
- 96.130 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 105-108 °C(lit.) |
|---|---|
| Boiling Point | 218.0±0.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 90.5±11.7 °C |
| Exact Mass | 96.068748 |
| PSA | 28.68000 |
| LogP | 1.24 |
| Vapor Pressure | 0.2±0.4 mmHg at 25°C |
| Refractive Index | 1.520 |
| Additional Property | methanol: 0.1 g/mL, clear |
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 3,5-Dimethylpyrazole?
The CAS number of 3,5-Dimethylpyrazole is 67-51-6.
What are the molecular formula and molecular weight of 3,5-Dimethylpyrazole?
3,5-Dimethylpyrazole has molecular formula C5H8N2 and molecular weight 96.130 g/mol.
Is 3,5-Dimethylpyrazole hazardous?
3,5-Dimethylpyrazole 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 3,5-Dimethylpyrazole?
For 3,5-Dimethylpyrazole, Upstream Products: 2,4-Pentanedione, 1-Allyl-3,5-dimethylpyrazole, Nitrogen; Downstream Products: 3,4-Dibromo-5-nitro-1H-pyrazole, Dimethyl 1H-pyrazole-3,5-dicarboxylate, 4-Bromo-3,5-dimethyl-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. "3,5-Dimethylpyrazole (CAS 67-51-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-42314-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.