4B acid is a white or beige powder。With general organic amine substance, 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。With general organic amine substance, slightly soluble in hot water, insoluble in cold water, benzene and chlorobenzene, soluble in ethanol, ether and dilute alkali solution。

2B oil has a light yellow or light brown appearance。It has general 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。With general organic amine substance, slightly soluble in hot water, insoluble in cold water, benzene and chlorobenzene, soluble in ethanol, ether and dilute alkali solution。