ZINC SULFATE 食品级七水硫酸锌
一、化学名：硫酸锌
二、分子式：ZnSO4.H2O, ZnSO4.7H2O
三、分子量：179.49(一水），287.58（七水）
四、CAS：7446-19-7（一水）；7446-20-0（七水）
五、性能：无色晶体,小针状或粒状晶形粉末,无臭,在空气中会风化。溶液对石蕊呈酸性比重1.957(25/4℃),熔点100℃在280℃失去7H2O,溶于水及甘油,不溶于酒精,毒性底。
六、用途：食品补充剂,动物饲料,媒染剂,木材防腐剂,分析试剂。
七、包装：内衬聚乙烯塑料袋，外套塑料编织袋，每袋25Kg。
八、贮存与运输：应贮在干燥，通风清洁的库房中，轻装轻放，防止受潮、受热，运输过程中防止雨淋受潮，应与有毒物品隔离堆放。
质量指标 Specification GB25579-2010 FCC,1996
含量 w/% ZnSO4.H2O Content ZnSO4.H2O 99.0-100.5 98.0-100.5
ZnSO4.7H2O ZnSO4.7H2O 99.0-108.7 99.0-108.7
砷(As), mg/kg ≤ As 0.0003 ——
碱金属和碱土金属盐 w/% ≤ Alkali metal 0.50 0.5
酸度 PH 通过试验 正常
硒(Se), mg/kg ≤ Se 0.003 0.003
汞(Hg), mg/kg ≤ Hg 0.0001 0.0005
铅(Pb), mg/kg ≤ Pb 0.0004 0.001
镉(Cd), mg/kg ≤ Cd 0.0002 0.0005
1、Chemical Name: Zinc sulfate
2、Molecular Formula : ZnSO4.H2O, ZnSO4.7H2O
3、Molecular Weight: 179.48(Monohydrate), 287.54(Heptahydrate)
4、CAS: 7446-19-7（H2O）；7446-20-0 (7H2O)
5、Character: It is colorless or white crystalline powder, odorlessness. Efflorescence in air. Acid hydrometer is 1.957(25/4℃) to litmus. Melting point is 100℃. It’s soluble in water and glycerol, insoluble in ethanol and light toxicity, lose crystal water in 280℃.
6、Usage: It is used as food additives, animal feed, printing and dyeing, timber preservative.Used as analytical reagent.
7、Packing: It is packed with polythene bag as the inner layer, and a compound plastic woven bag as the outer layer. The net weight of each bag is 25kg.
8、Storage and Transport: It should be stored in a dry and ventilative warehouse; kept away form water and moisture during transport; unloaded with care, so as to avoid damage to bags. Furthermore, it should be stored separately from poisonous substances.
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