产品描述

Appearance    Yellow or orange crystalline powder.almostodourless
IdentificationUltraviolet  AbsorptionA256/A365    Between 2.80 and 3.00
Water    Not more than 8.5%
Chromatographic purity    Not greater than 2.0 %
Organic volatile impurities    Meet the requirements
Assay    97.0~102.0%