Customization: | Available |
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CAS No.: | 7446-20-0 |
Certification: | CCIC, CIQ, RoHS, ISO |
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Chemical Name: Zinc sulfate
Molecular Formula: ZnSO4·7H2O
Molecular Weight: 287.54 (Heptahydrate)
CAS: 7446-20-0 (7H2O)
Character: Colorless or white crystalline powder, odorless. Efflorescence in air. Acid hydrometer is 1.957 (25/4) to litmus. Melting point is 100°C. Soluble in water and glycerol, insoluble in ethanol. Light toxicity, loses crystal water at 280°C.
Company: Nanjing Jiayi Sunway Chemical Co., Ltd.
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Index | Specification | GB25579-2010 | FCC,1996 | ||
content w/% | ZnSO4.H2O | Content | ZnSO4.H2O | 99.0 | 99.0 |
ZnSO4.7H2O | ZnSO4.7H2O | 99.0 | 99.0 | ||
(As), mg/kg ≤ | As | 0.0003 | -- | ||
alkali metal w/% ≤ | Alkali metal | 0.50 | 0.5 | ||
acidity | PH | pass test | normal | ||
(Se), mg/kg ≤ | Se | 0.003 | 0.003 | ||
(Hg), mg/kg ≤ | Hg | 0.0001 | 0.0005 | ||
(Pb), mg/kg ≤ | Pb | 0.0004 | 0.001 | ||
(Cd), mg/kg ≤ | Cd | 0.0002 | 0.0005 |