Malononitrile
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Malononitrile | |
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Common name | malononitrile |
Systematic name | propanedinitrile |
Other names | dicyanomethane; methylene cyanide; malondinitrile |
Chemical formula | C3H2N2 |
Malononitrile, also propanedinitrile, is a nitrile, with formula CH2(CN)2. Malononitrile is relatively acidic, with an pKa of 11 in water. This allows it to be used in the Knoevenagel condensation, for example in the preparation of CS gas.