Product Name:Agriculture Grade Zinc Sulfate Heptahydrate
Type: Zinc sulfate series
Chinese Name:农业级七水硫酸锌系列产品
Molecular formula:ZnSO₄ 7H₂O
Molecular weight: 287.56

Physical and chemical property

White or slight-yellow crystal, loose and no agglomeration, easy soluble in water and slightly dissolvable in alcohol and glycerol, insoluble in liquid ammonia and ketone, tending to lose water molecules of hydration in dry air and become white powder appearance. When the temperature is 280℃, it will become no water substance and lose all crystal water. When the temperature is above 500℃, it will decompose.

Relatively density: 1.975

Melting point: 100℃

Use

As a kind of microelement, it is widely used in rice, wheat, corn, vegetable and fruit. It is also used by mixing with other multiplex fertilizer and prevent fruit tree against diseases. Characteristic and function

1.Easy solubie in water, quick absorbable for the plant.

2.Low content of heavy metal, Fe、Cd、Cr、As meet with China Agricaltured Standard.

Packaging and transportation

Plastic woven bag lined with plastic film bag. Standard net weight: 25kg or as customer’s requirement. Avoid moisture during transportation and store.

 

ITEM	INDEX
Type	Premium Grade	Grade I
Zn  % ≥	22.51	22.28
ZnSO4 7H2O  % ≥	99	98
Water insoluble %≤	0.020	0.060
Pb %≤	0.001	0.002
Cd  % ≤	0.001	0.002
Cr  % ≤	0.0005	0.001