2,5-Dichloropyrazine
Also known as: 2,5-Dichloro-1,4-diazine, 2,5-Dichloro-pyrazine, NSC 349788, Pyrazine, 2,5-dichloro-
2,5-Dichloropyrazine (CAS 19745-07-4) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C4H2Cl2N2 and a molecular weight of 148.978 g/mol. Key properties include a melting point of 52-54ºC, a boiling point of 184.4±35.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 81.5±11.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 19745-07-4
- Jingsj CID
- J-7031-5
- Molecular Formula
- C4H2Cl2N2
- Molecular Weight
- 148.978 g/mol
- Category
- Organohalogen Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 52-54ºC |
|---|---|
| Boiling Point | 184.4±35.0 °C at 760 mmHg |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 81.5±11.5 °C |
| Exact Mass | 147.959503 |
| PSA | 25.78000 |
| LogP | 1.49 |
| Vapor Pressure | 1.0±0.3 mmHg at 25°C |
| Refractive Index | 1.559 |
Customs & Trade Information
| HS Code | 2933990090 |
|---|---|
| Summary | 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. 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 2,5-Dichloropyrazine?
The CAS number of 2,5-Dichloropyrazine is 19745-07-4.
What are the molecular formula and molecular weight of 2,5-Dichloropyrazine?
2,5-Dichloropyrazine has molecular formula C4H2Cl2N2 and molecular weight 148.978 g/mol.
What are the upstream and downstream products of 2,5-Dichloropyrazine?
For 2,5-Dichloropyrazine, Upstream Products: 2-Amino-5-chloropyrazine, Pyrazine, 2-chloro-, 4-oxide, 5-Chloro-2-hydroxypyrazine; Downstream Products: tert-Butyl 4-(6-chloropyrazin-2-yl)piperazine-1-carboxylate, 2-Chloro-5-iodopyrazine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2,5-Dichloropyrazine (CAS 19745-07-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-7031-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.