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IUPAC name Pyridazine
Other names 1,2-diazine, orthodiazine, oizine
CAS number 289-80-5
RTECS number GY2390000
Molecular formula C4H4N2
Molar mass 80.09 g mol-1
Appearance colorless liquid
Density 1.107 g/cm3
Melting point


Boiling point


Related Compounds
Related compounds pyridine, pyrimidine, pyrazine
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references

Pyridazine is a heteroaromatic organic compound with the molecular formula C4H4N2, sometimes called 1,2-diazine. It contains a six-membered ring with two adjacent nitrogen atoms. It is a colorless liquid with a boiling point of 208 °C.

Pyridazine has no household use. It is mainly used in research and industry as building block for more complex compounds. The pyridazine structure is found within a number of herbicides such as credazine, pyridafol and pyridate. It is also found within the structure of several pharmaceutical drugs such as cefozopran, cadralazine, minaprine, hydralazine, and cilazapril.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Pyridazine". A list of authors is available in Wikipedia.
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