物化性质(Physical properties): 本品为白色或类白色粉末;有引湿性;在水中易溶,在乙醇,乙醚,三氯甲烷中几乎不溶。 This product is a white to off-white powder; hygroscopicity; freely soluble in water, insoluble in ethanol, chloroform and ether. 含量(Contents)dry basis:≥87.0% 贮藏(storage):遮光,密封,冷冻保存。Preserve in tight, light-resistant containers, in a freezing place.