Product Name:Food Grade Zinc Sulfate Heptahydrate
Type: Zinc sulfate series
Chinese Name:食品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 supplement nutriment of food, zinc fortifier. Characteristic and function

1.High purity, easy soluble, quick absorbable for human body.

2.Low content of heavy metal, Pb, Cd, Hg, Cr and As meet with China Inspection and Quarantine Food 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  % ≤	0.02	0.05
PH(50g/L solution) ≥	3.0	3.0
Pb  % ≤	0.001	0.002
Fe  % ≤	0.003	0.005
Cd  % ≤	0.001	0.002
Cr %≤	0.0005	0.001
As % ≤	0.0005	0.0005