Chlorhexidine Hydrochloride Acid in Powder Form is soluble in formic acid, slightly soluble in methanol, and in warm methanol, and practically insoluble in water, in ethanol [95%] and in diethyl ether. The Chlorhexidine Hydrochloride is a white crystalline odourless powder having bitter taste. The Chlorhexidine Hydrochloride is gradually colored by light and can dissolve 0.01 g in 5 ml of methanol by warming, add 1 ml of bromine and 1 ml of 8 mol/l sodium hydroxide a dark red colour is produced. The Chlorhexidine Hydrochloride Acid in Powder Form has melting range from 130 ° C to 134 ° C and gives reaction of chloride.