1-Chlorophthalazine
Also known as: 1-Chloro-2,3-benzodiazine, Hydralazine Chloro Impurity, Hydralazine Hydrochloride Impurity: 1-Chlorophthalazine, Hydralazine Impurity 02, Hydrochlorothiazide Impurity 2, NSC 71104, Phthalazine, 1-chloro-, 1-Chlorophthalazine Discontinued See C379660
1-Chlorophthalazine (CAS 5784-45-2) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C8H5ClN2 and a molecular weight of 164.59200 g/mol. Key properties include a melting point of 109-112ºC, a boiling point of 364.3ºC at 760mmHg, a density of 1.349g/cm3 and a flash point of 205.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 5784-45-2
- Jingsj CID
- J-18145-3
- Molecular Formula
- C8H5ClN2
- Molecular Weight
- 164.59200 g/mol
- Category
- Organohalogen Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 109-112ºC |
|---|---|
| Boiling Point | 364.3ºC at 760mmHg |
| Density | 1.349g/cm3 |
| Flash Point | 205.6ºC |
| Exact Mass | 164.01400 |
| PSA | 25.78000 |
| LogP | 2.28320 |
| Refractive Index | 1.643 |
Frequently Asked Questions
What is the CAS number of 1-Chlorophthalazine?
The CAS number of 1-Chlorophthalazine is 5784-45-2.
What are the molecular formula and molecular weight of 1-Chlorophthalazine?
1-Chlorophthalazine has molecular formula C8H5ClN2 and molecular weight 164.59200 g/mol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-Chlorophthalazine (CAS 5784-45-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-18145-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.