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Zinc sulfate heptahydrate powder

Zinc sulfate heptahydrate is a Inorganic Chemicals.Zinc sulphate heptahydrate is white granules or powder at normal temperature and has a molecular weight of 179.47, also known as cesium, zinc technetium, and a density of 1.957 g/cm3. It is easily soluble in water, slightly soluble in ethanol and glycerin, and is gradually weathered in dry air. At 39°C, ZnSO4·7H2O loses one crystal water and turns into ZnSO4·6H2O. At 70°C, it loses the crystallization water and turns into ZnSO4·H2O. At 280°C, it loses all the crystal water and becomes anhydrate. When heated to 767°C, it decomposes into zinc oxide and sulfur trioxide.

Zinc Sulfate Implementation Standard (HG/T2326-2005):

project		index
		Zinc sulfate Heptahydrate
		Excellent product	First grade	Qualified products
Main content	counted with Zn,%≥	22.51	22.06	20.92
Main content	counted with ZnSO4·7H2O,%≥	99.0	97.0	92.0
Insoluble content,%≤		0.020	0.050	0.10
PH,≥		3.0	3.0	――
Chloride(counted with Cl),%≤		0.20	0.60	――
Pb,%≤		0.001	0.010	0.010
Fe,%≤		0.003	0.020	0.060
Mn,%≤		0.005	0.10	――
Cd,%≤		0.010	0.010	――

Use

1. For preparing zinc supplements, astringents, etc.
2. Used as a mordant, wood preservative, paper industry bleach, also used in medicine, artificial fibers, electrolysis, electroplating, pesticides and production of zinc salts, etc.
3. It is used as Feed Additive and is a supplement of zinc in feed. It is a component of many enzymes, proteins, ribose, etc. in animals
4. As a Food Additive, is a food zinc fortifier that is allowed to use
5. For artificial fiber coagulation liquid. Used in the printing and dyeing industry as a mordant and an anti-alkali agent for the dyeing of vanadine blue salt. It is the main raw material for producing inorganic pigments (such as lithopone), other zinc salts (such as zinc stearate, basic zinc carbonate) and zinc-containing catalysts. Used as wood and leather preservatives, bone glue clarification and preservatives. The pharmaceutical industry is used as an emetic. It can also be used to prevent diseases in fruit nurseries and to manufacture cables and zinc fertilizers.

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