| Origin | China | |
| Brand Name | xiangchangtong | |
| CAS No. | 7446-20-0 | |
| Purity | 98.0%min | |
| PHYSICAL STATE | White Crystalline powder | |
| SPECIFIC GRAVITY | 1.97 | |
| SOLUBILITY IN WATER | 54g/10ml at 20 C | |
| STABILITY | Stable under ordinary con | |
| pH | 5 - 7 | |
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PRODUCT IDENTIFICATION
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CAS NO.
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7446-20-0
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EINECS NO.
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231-793-3
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FORMULA
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ZnSO4.7H2O
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MOL WT.
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287.55
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H.S. CODE
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2833.26
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TOXICITY
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Oral rat LD50: 2150 mg/kg
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SYNONYMS
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Sulfuric acid, zinc salt (1:1), heptahydrate; White vitriol;
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Zinc sulfate (1:1) heptahydrate; Zinc sulfate heptahydrate; Zinc vitriol (heptahydrate);
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GENERAL DESCRIPTION
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Zinc Sulfate (also spelled zinc sulphate) is a very water soluble, clear, crystalline compound prepared by heating zinc sulphide ore in air and dissolving out and recrystallizing the sulphate. It is commonly used as the heptahydrate form; it occurs naturally as the mineral goslarite, and can be prepared by reacting zinc with sulfuric acid.
The crystalline sulfate is known commonly as white vitriol. It loses water at 30°C to give the hexahydrate and more water is lost at 70°C to form the monohydrate. The anhydrous salt forms at 280°C and this decomposes above 500°C.
It is used in agriculture as a weed killer and to give protection against pests; It is used to supply zinc in animal feeds and fertilizers; It is also an important constituent of the precipitating bath in the manufacture of viscose rayon and in electrolyte for zinc plating; It functions as a mordant in dyeing; as a preservative for skins and leather; and as an astringent and emitic in medicine.
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PHYSICAL AND CHEMICAL PROPERTIES
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PHYSICAL STATE
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White Crystalline powder or Granular
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MELTING POINT
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100 C
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BOILING POINT
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500 C (Decomposes)
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SPECIFIC GRAVITY
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1.97
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SOLUBILITY IN WATER
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54g/10ml at 20 C
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pH
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5 - 7
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NFPA RATINGS
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Health: 1; Flammability: 0; Reactivity: 0
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FLASH POINT
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Not considered to be a fire hazard
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STABILITY
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Stable under ordinary conditions
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Production of Ryon fibre, Micronutrient in fertilisers , Agriculture, Production of paint and varnishes, glues, Titane Dioxide, Zinc Sterate and Zinc-Alkyl-di-thiocarbamate (Fungicide), Rubber As accelerator, flotation of ores, Electroplating and surface treatment, Animal feed.
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SALES SPECIFICATION
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APPEARANCE
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White Crystalline powder or Granular
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PURITY
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98.0%min
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Zn
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22.0% min
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WATER INSOLUBLES
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0.1% max
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Mg
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0.5% max
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Cu
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0.1% max
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Ca
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0.1% max
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As
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10ppm max
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Pb
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5ppm max
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PARTICLE SIZE
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60 - 100mesh (Powder) , 10-50mesh (Granular)
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PACKING
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25kgs, 1mt in Bag (20mts in contaier)
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HAZARD CLASS
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Not listed on TSCA Inventory
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