Methylamine hydrochloride is a colorless flaky crystal or white to off-white powder, freely soluble in water. It is mainly used as a basic raw material in medicine, pesticides, dyes and other organic synthesis, as well as in oil fields.

It is mainly used as a raw material for pharmaceuticals, pesticides (carbaryl, dimethoate, chlordimeform, etc.), dyes (alizarin intermediates, anthraquinone intermediates, etc.), explosives and fuels (water gel explosives, monomethylhydrazine, etc.), surfactants, accelerators, rubber additives, photographic chemicals, solvents, etc.