4,5-Dichloro-3(2H)-pyridazinone
Also known as: 4,5-dichloropyridazin-3(2H)-one, 4,5-dichloro-2,3-dihydropyridazin-3-one, 4,5-dichloropyridazin-3-ol, 4,5-dichloro-3-pyridazinol, 3(2H)-Pyridazinone, 4,5-dichloro-, 4,5-dichloro-1H-pyridazin-6-one
4,5-Dichloro-3(2H)-pyridazinone (CAS 932-22-9) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C4H2Cl2N2O and a molecular weight of 164.977 g/mol. Key properties include a melting point of 204-206 °C(lit.), a boiling point of 339.2ºC at 760 mmHg, a density of 1.8±0.1 g/cm3 and a flash point of 159ºC. 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.
- 932-22-9
- Jingsj CID
- J-1357773-6
- Molecular Formula
- C4H2Cl2N2O
- Molecular Weight
- 164.977 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 204-206 °C(lit.) |
|---|---|
| Boiling Point | 339.2ºC at 760 mmHg |
| Density | 1.8±0.1 g/cm3 |
| Flash Point | 159ºC |
| Exact Mass | 163.954422 |
| PSA | 45.75000 |
| LogP | -0.10 |
| Refractive Index | 1.662 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
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 4,5-Dichloro-3(2H)-pyridazinone?
The CAS number of 4,5-Dichloro-3(2H)-pyridazinone is 932-22-9.
What are the molecular formula and molecular weight of 4,5-Dichloro-3(2H)-pyridazinone?
4,5-Dichloro-3(2H)-pyridazinone has molecular formula C4H2Cl2N2O and molecular weight 164.977 g/mol.
Is 4,5-Dichloro-3(2H)-pyridazinone hazardous?
4,5-Dichloro-3(2H)-pyridazinone has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.
What are the upstream and downstream products of 4,5-Dichloro-3(2H)-pyridazinone?
For 4,5-Dichloro-3(2H)-pyridazinone, Upstream Products: 3,4-dichloro-5-hydroxy-5H-furan-2-one, Mucochloric acid, 4-Aminophenol; Downstream Products: 2-Benzyl-4,5-dichloropyridazin-3(2H)-one, 3(2H)-Pyridazinone, 4,5-Dichloro-2-methyl-3(2H)-pyridazinone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4,5-Dichloro-3(2H)-pyridazinone (CAS 932-22-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1357773-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.