Zinc Sulfate Heptahydrate


Zinc Sulfate Heptahydrate

Short Description:

Zinc sulfate heptahydrate is an inorganic compound with a molecular formula of ZnSO4 7H2O, commonly known as alum and zinc alum. Colorless orthorhombic prismatic crystal zinc sulphate crystals Zinc Sulphate Granular, white crystalline powder, soluble in water, slightly soluble in ethanol. It loses water when heated to 200°C and decomposes at 770°C.

Product Detail

Product Tags


ITEM Industrial  Grade Feed Grade Eplating Grade High-purity
ZnSO4.7H2O    %≥ 96 98 98.5 99
Zn                     %≥ 21.6 22.2 22.35 22.43
As                     %≤ 0.0005 0.0005 0.0005 0.0005
Pb                     %≤ 0.001 0.001 0.001 0.001
Cd                     %≤ 0.002 0.001 0.002 0.002


1. For the preparation of zinc supplements, astringents, etc.
2. Used as mordant, wood preservative, bleaching agent in paper industry, also used in medicine, man-made fiber, electrolysis, electroplating, pesticide and production of zinc salt, etc.
3. Zinc sulfate is a supplement of zinc in feed. It is a component of many enzymes, proteins, ribose, etc. in animals. It participates in carbohydrate and fat metabolism, and can catalyze the mutual conversion of pyruvate and lactate to promote growth. Insufficient zinc can easily cause hypokeratosis, stunted growth and hair deterioration, and can affect animal reproductive function.
4. Zinc sulfate is a permitted food zinc fortifier. my country stipulates that it can be used for table salt, and the usage amount is 500mg/kg; in infant food, it is 113-318mg/kg; in dairy products, it is 130-250mg/kg; in cereals and its products, it is 80-160mg/kg; It is 22.5 to 44 mg/kg in liquid and milk beverages.
5. Used in man-made fiber coagulation liquid. In the printing and dyeing industry, it is used as a mordant and an alkali-resistant agent for the dyeing of vanlarmin blue. It is the main raw material for the manufacture of inorganic pigments (such as zinc white), other zinc salts (such as zinc stearate, basic zinc carbonate) and zinc-containing catalysts. Used as wood and leather preservative, bone glue clarification and preservative. The pharmaceutical industry is used as an emetic. It can also be used to prevent diseases in fruit tree nurseries and manufacture cables and Zinc Sulphate Fertilizer.

Transportation Precautions: The packaging should be complete and the loading should be secure at the time of shipment. During transportation, make sure that the container does not leak, collapse, fall or be damaged. It is strictly forbidden to mix and transport with oxidants, edible chemicals, etc. During transportation, it should be protected from exposure to sunlight, rain, and high temperature. Vehicles should be thoroughly cleaned after transportation. When transporting by road, follow the prescribed route.
( plastic lined, plastic woven bags)
*25kg/bag, 50kg/bag, 1000kg/bag


Flow chart



Q1: May I get one sample before placing order?
Re: Yes, we'd like to provide sample for you. free samples(max 1Kg) are available, but freight cost will be born by customers.

Q2: How and when can I get my goods after payment?
Re: For small quantity products, they will be delivered to you by international courier(DHL, FedEx, T/T, EMS, etc.) or by air. Usually it will cost 2-5 days that you can get the goods after delivery.
For large quantity products, shipment is better. It will cost days to weeks to come to your destination port, which depends on where the port is.

Q3: Is there any possible to use my appointed label or package?
Re: Sure. If needed, we'd like to use label or package according to your requirement.

Q4: How can you guarantee the goods you offer is qualified?
Re: We always believe honesty and responsibility are basis of one company, so whatever products we provide for you all are high qualified. If the goods can't come to the quality we promise, you can ask for refund.

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