Diphenhydramine Hydrochloride

Appearance: This product is a white crystalline powder; Odorless, bitter taste, followed by a sense of numbness.
This product is highly soluble in water, soluble in ethanol or chloroform, slightly soluble in acetone, and minimally soluble in ether or benzene.
Melting point: The melting point of this product is 167-171 ℃.
Regarding substances: a single impurity shall not exceed 0.5%, and the sum of all impurities shall not exceed 1.0%.
Dry weight loss: not exceeding 0.5%.
Burning residue: not exceeding 0.1%.
Content: not less than 99.0%.