Zinc Sulphate Heptahydrate

PRODUCT IDENTIFICATION

CAS NO.

********0

EINECS NO.

********3

FORMULA

ZnSO4.7H2O

MOL WT.

**7.*5

H.S. CODE

***3.*6

TOXICITY

Oral rat LD*0: ***0 mg/kg

SYNONYMS

Sulfuric acid, zinc salt (1:1), heptahydrate; White vitriol;

Zinc sulfate (1:1) heptahydrate; Zinc sulfate heptahydrate; Zinc vitriol (heptahydrate);

GENERAL DESCRIPTION

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 *0°C to give the hexahydrate and more water is lost at *0°C to form the monohydrate. The anhydrous salt forms at **0°C and this decomposes above **0°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.

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE

White Crystalline powder or Granular

MELTING POINT

**0 C

BOILING POINT

**0 C (Decomposes)

SPECIFIC GRAVITY

1.*7

SOLUBILITY IN WATER

*4g/*0ml at *0 C

pH

5 - 7

NFPA RATINGS

Health: 1; Flammability: 0; Reactivity: 0

FLASH POINT

Not considered to be a fire hazard

STABILITY

Stable under ordinary conditions

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.

SALES SPECIFICATION

APPEARANCE

White Crystalline powder or Granular

PURITY

*8.0%min

Zn

*2.0% min

WATER INSOLUBLES

0.1% max

Mg

0.5% max

Cu

0.1% max

Ca

0.1% max

As

*0ppm max

Pb

5ppm max

PARTICLE SIZE

*0 - **0mesh (Powder) , ****0mesh (Granular)

PACKING

*5kgs, 1mt in Bag (*0mts in contaier)

HAZARD CLASS

Not listed on TSCA Inventory