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中文名称：硫酸锌食品级(七水、一水)
英文名称：Food GradeZinc Sulfate
分 子 式： ZnSO4.H2O, ZnSO4.7H2O
分 子 量： 179.49(一水)，287.58(七水)
CAS NO：7446-19-7(一水)；7446-20-0(七水)
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。
用 途： 食品补充剂,动物饲料,媒染剂,木材防腐剂,分析试剂。
包 装： 内衬聚乙烯塑料袋，外套塑料编织袋，每袋25Kg。
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。
硫酸锌质食品级量指标：
|
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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