|Place of Origin:||Hunan, China|
|Model Number:||Zinc Sulphate Heptahydrate|
|Minimum Order Quantity:||25 ton/20'|
|Packaging Details:||in the woven bag lined with plastic, net wt. 25kgs or 1000kgs bags or customized|
|Delivery Time:||20 Days|
|Payment Terms:||L/C; D/P; T/T|
|Supply Ability:||20000 Ton/per year|
|Molecular Weight:||287.5786||Appearance:||White Crystal|
|HS Code:||28332930||Water Insoluble Matter:||0.05% Max|
|Application:||Agricultural Sprays||Use:||Animal Feeds|
|CAS:||7446-20-0||Melting Point:||100 °C|
CAS:7446-20-0 Zinc Sulphate Heptahydrate Crystals Used For Man-Made Fibres
|Water Insoluble Matter||0.05% Max|
|Melting point||100 °C|
1. Zinc sulfate heptahydrate is used as an analytical reagent, mordant and phosphor substrate for the determination of copper and chlorate by intravenous drip analysis of analytical reagent. Serum protein test, determination of sulfur content of steel and slag. Coal dye, disinfectant, haploid breeding preparation of various media.
2. Zinc sulfate heptahydrate was used as a zinc source in plant cell culture to support cell membrane stability and gene regulation.
In the reactor, dilute solution of 18% sulfuric acid dissolved zinc slag was first added, and zinc oxide (or raw material containing zinc) was added under agitation to prepare slurry. Then sulfuric acid was added and the reaction was carried out in an acid resistant reactor with agitation. The control Ph5.1 was the end point of the reaction, and the concentration was about 38° Be. Reaction liquid after filtering, liquid heated to 80 ℃, and zinc powder, such as copper, cadmium, nickel Chemicalbook replacement, then through filtration, the filtrate is heated to above 80 ℃, join the potassium permanganate (or bleaching powder) and heated to boiling, the impurities such as iron, manganese oxide, the filtrate after filtration by clarify first, and then evaporating to 49 ~ 52 ° Be, by the cooling crystallization, centrifugal dehydration, drying, seven water zinc sulfate was prepared. The ZnO + - H2SO4 - ZnSO4 + H2O
|Zn||21% MIN||20-22% MIN|
|As||5ppm MAX||5ppm MAX|
|Cd||20ppm MAX||20ppm MAX|
|Heavy Metal(Pb)||10ppm MAX||10ppm MAX|
|Water Insoluble Matter||0.05% MAX||0.05% MAX|
|Fineness||10-20 mesh||10-20 mesh|
Feature and Advantages:
We will packed in the woven bag lined with plastic, net wt. 25kgs or 1000kgs bags or customized.
We will arrange the shipment within 20days after received your order.