What is "hexamethylenediamine"

n. (context organic compound English) A compound with chemical formula H₂N(CH₂)₆NH₂, a colourless solid with a strong amine odour, used in the production of polymers.

Hexamethylenediamine is the organic compound with the formula HN(CH)NH. The molecule is a diamine, consisting of a hexamethylene hydrocarbon chain terminated with amine functional groups. The colorless solid (yellowish for some commercial samples) has a strong amine odor, similar to piperidine. About 1 billion kilograms are produced annually.