Pyridazine
- CAS NO.：289-80-5
- Empirical Formula: C4H4N2
- Molecular Weight: 80.09
- MDL number: MFCD00006463
- EINECS: 206-025-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:23:11
What is Pyridazine?
Chemical properties
Clear yellowish-brown liquid
The Uses of Pyridazine
Pyrrolo[1,2-b]pyridazine 1 is a N-bridgehead aromatic heterocycle containing two nitrogen atoms, is obtained by the condensation of pyridazine and pyrrole.
Definition
ChEBI: Pyridazine is a member of pyridazines and a diazine.
General Description
Pyridazine is a mono-basic 1,2-diazine compound, which is commonly prepared by the reaction of 1,4-dicarbonyls with hydrazines. Pyridazine ring is found in many herbicides like credazine, pyridatol and many pharmaceutical drugs like cefozopran, olaparib, talazoparib, and cadralazine.
Safety Profile
Moderately toxic by intraperitoneal route. When heated to decomposition it emits toxic vapors of NOx.
Properties of Pyridazine
| Melting point: | -8 °C (lit.) |
| Boiling point: | 208 °C (lit.) |
| Density | 1.103 g/mL at 25 °C (lit.) |
| refractive index | n |
| Flash point: | 185 °F |
| storage temp. | Inert atmosphere,Room Temperature |
| form | Liquid |
| pka | 2.24(at 20℃) |
| color | Clear yellow-brown |
| Water Solubility | MISCIBLE |
| Merck | 14,7969 |
| BRN | 103906 |
| CAS DataBase Reference | 289-80-5(CAS DataBase Reference) |
| NIST Chemistry Reference | Pyridazine(289-80-5) |
| EPA Substance Registry System | Pyridazine (289-80-5) |
Safety information for Pyridazine
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H227:Flammable liquids H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for Pyridazine
| InChIKey | PBMFSQRYOILNGV-UHFFFAOYSA-N |
Pyridazine manufacturer
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