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Regulated Fine Chemicals
CAS NO:
7446-19-7
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Basic Info
Grade
Food Grade
Is Manufacturer
YES
Payment Method
T/T
Samples Provided
YES
Product Description
1. Chemical Name: Zinc sulfate
2. Molecular Formula : ZnSO4.H2O ZnSO4.7H2O
3. Molecular Weight: 179.49(H2O) 287.58(7H2O)
4. CAS: 7446-19-7(H2O) 7446-20-0 (7H2O)
5. Character: It is colorless or white crystalline powder, odorless. 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 ventilating warehouse; kept away from water and moisture during transport; unloaded with care, so as to avoid damage to bags. Furthermore, it should be stored separately from poisonous substances.
|
质量指标 |
Specification |
GB25579-2010 |
FCC V |
||
|
色泽 |
Color |
无色或白色 |
Colorless or white |
||
|
含量 % |
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 |
0.0003 |
--- |
||
|
碱金属和碱土金属盐≤% |
Alkalies and Alkaline Earths |
0.5 |
0.5 |
||
|
酸度 |
Acidity |
通过试验 |
Passes test |
||
|
硒 ≤% |
Se |
0.003 |
0.003 |
||
|
汞 ≤% |
Hg |
0.0001 |
0.0005 |
||
|
铅 ≤% |
Pb |
0.0004 |
0.001 |
||
|
镉 ≤% |
Cd |
0.0002 |
0.0005 |
||
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