5 years producing experience, 5 tons/month, export to Indonesia, Taiwan and South America, Europe, etc ITEM TESTEDSTANDARDRESULTSAppearanceWhite to almost white crystalline powder.White crystalline powder.Identification1.Positive reactionPositive reaction2.Ultraviolet-visible Spectrophotometers: the maximal absorption in 295nm, 259nm, and 234nm.Complies3.Infrared Spectrophotometry: exhibit ...