Phthalazine
Also known as: 2,3-Benzodiazine, 2,3-Diazanaphthalene, 4,5-Benzopyridazine, Benzo[d]pyridazine, β-Phenodiazine, PHZ
Phthalazine (CAS 253-52-1) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C8H6N2 and a molecular weight of 130.14700 g/mol. Key properties include a melting point of 89-92 °C(lit.), a boiling point of 316.0±0.0 °C at 760 mmHg, a density of 1.183 g/cm3 and a flash point of 162.5±12.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 253-52-1
- Jingsj CID
- J-14675-3
- Molecular Formula
- C8H6N2
- Molecular Weight
- 130.14700 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 89-92 °C(lit.) |
|---|---|
| Boiling Point | 316.0±0.0 °C at 760 mmHg |
| Density | 1.183 g/cm3 |
| Flash Point | 162.5±12.2 °C |
| Exact Mass | 130.05300 |
| PSA | 25.78000 |
| LogP | 0.46 |
| Vapor Pressure | 0.000782mmHg at 25°C |
| Refractive Index | 1.653 |
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 Phthalazine?
The CAS number of Phthalazine is 253-52-1.
What are the molecular formula and molecular weight of Phthalazine?
Phthalazine has molecular formula C8H6N2 and molecular weight 130.14700 g/mol.
What are the upstream and downstream products of Phthalazine?
For Phthalazine, Upstream Products: Benzaldehyde, N,N-Dimethylformamide, Dihydralazine; Downstream Products: Phthalide, 2-Cyanobenzaldehyde, 5-nitrophthalazine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Phthalazine (CAS 253-52-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-14675-3 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.