Basic Info.
Product Description
Product Description
Chemical Name: Zinc sulfate
Molecular Formula: ZnSO4·H2O, ZnSO4·7H2O
Molecular Weight: 179.48 (Monohydrate), 287.54 (Heptahydrate)
CAS: 7446-19-7 (H2O); 7446-20-0 (7H2O)
Character: Colorless or white crystalline powder, odorless. Efflorescence in air. Acid hydrometer is 1.957 (25/4ºC) to litmus. Melting point is 100ºC. Soluble in water and glycerol, insoluble in ethanol. Light toxicity, loses crystal water at 280ºC.
Usage: Food additives, animal feed, printing and dyeing, timber preservative. Analytical reagent.
Packing: Packed in a polythene bag as the inner layer, and a compound plastic woven bag as the outer layer. Each bag weighs 25kg.
Storage and Transport: Store in a dry and ventilated warehouse. Keep away from water and moisture during transport. Unload with care to avoid bag damage. Store separately from poisonous substances.
Company Name: Nanjing Jiayi Sunway Chemical Co., Ltd.
| Quality indicators | Specification | GB25579-2010 | FCC,1996 | ||
| content 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 | ||
| Arsenic (As), mg/kg ≤ | As | 0.0003 | -- | ||
| Alkali and alkaline earth metal salt sw/% ≤ | Alkali metal | 0.50 | 0.5 | ||
| Acidity | PH | tested | normal | ||
| Selenium(Se), mg/kg ≤ | Se | 0.003 | 0.003 | ||
| Mercury (Hg), mg/kg ≤ | Hg | 0.0001 | 0.0005 | ||
| Lead (Pb), mg/kg ≤ | Pb | 0.0004 | 0.001 | ||
| Cadmium (Cd), mg/kg ≤ | Cd | 0.0002 | 0.0005 | ||
