4B acid is a white or beige powder.Common organic amines, slightly soluble in hot water, insoluble in cold water, benzene and chlorobenzene, soluble in ethanol, ether and dilute alkali solution.

Sodium 2B is a white or light yellow powder.Common organic amines, slightly soluble in hot water, insoluble in cold water, benzene and chlorobenzene, soluble in ethanol, ether and dilute alkali solution.

Oil 2B has a yellowish or light brown appearance.Common organic amines, soluble in ethanol or benzene, slightly soluble in hot water, insoluble in cold water.

2B acid is a white, reddish or gray crystalline powder.Common organic amines, slightly soluble in hot water, insoluble in cold water, benzene and chlorobenzene, soluble in ethanol, ether and dilute alkali solution.