4,5-Dichloro-2-phenylpyridazin-3(2H)-one
Also known as: 1-Phenyl-4,5-dichloro-6-pyridazone, 1-Phenyl-4,5-dichloropyridazin-6-one, 2-Phenyl-4,5-dichloro-2,3-dihydropyridazin-3-one, 2-Phenyl-4,5-dichloropyridazine-3(2H)-one, 4,5-Dichloro-2-phenyl-2H-pyridazin-3-one, MFCD00006470, EINECS 216-917-6
4,5-Dichloro-2-phenylpyridazin-3(2H)-one (CAS 1698-53-9) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C10H6Cl2N2O and a molecular weight of 241.07300 g/mol. Key properties include a melting point of 164-166 °C(lit.), a boiling point of 306.967°C at 760 mmHg, a density of 1.435g/cm3 and a flash point of 139.449°C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1698-53-9
- Jingsj CID
- J-47431-7
- Molecular Formula
- C10H6Cl2N2O
- Molecular Weight
- 241.07300 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 164-166 °C(lit.) |
|---|---|
| Boiling Point | 306.967°C at 760 mmHg |
| Density | 1.435g/cm3 |
| Flash Point | 139.449°C |
| Exact Mass | 239.98600 |
| PSA | 34.89000 |
| LogP | 2.53930 |
| Vapor Pressure | 4.74E-05mmHg at 25°C |
| Refractive Index | 1.661 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
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-2-phenylpyridazin-3(2H)-one?
The CAS number of 4,5-Dichloro-2-phenylpyridazin-3(2H)-one is 1698-53-9.
What are the molecular formula and molecular weight of 4,5-Dichloro-2-phenylpyridazin-3(2H)-one?
4,5-Dichloro-2-phenylpyridazin-3(2H)-one has molecular formula C10H6Cl2N2O and molecular weight 241.07300 g/mol.
Is 4,5-Dichloro-2-phenylpyridazin-3(2H)-one hazardous?
4,5-Dichloro-2-phenylpyridazin-3(2H)-one has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
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-2-phenylpyridazin-3(2H)-one (CAS 1698-53-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47431-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.