CAS 7446-20-0
Zinc Sulphate
Zinc Sulphate is the standard source of zinc for correcting crop deficiency and fortifying animal feed, in heptahydrate (21% Zn) and monohydrate (33% Zn) grades.
Zinc deficiency is one of the most widespread micronutrient problems in agriculture, especially in rice, wheat and maize grown on alkaline or high-phosphate soils. Zinc sulphate is the most widely used and economical correction, applied to soil, through fertigation or as a foliar spray.
Heptahydrate (about 21% zinc) dissolves readily and suits sprays and fertigation. Monohydrate (about 33% zinc) is more concentrated and suits soil application, blending and feed premixes. Industrially it is used in viscose rayon spinning baths, electroplating and making other zinc chemicals.
- CAS number
- 7446-20-0
- Grades / forms
- Heptahydrate & monohydrate
- Industries
- Feed & Fertilizers
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- MSDS in destination format
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Typical applications
- Correcting zinc deficiency in rice, wheat and maize
- Foliar sprays and fertigation (heptahydrate)
- Soil application and micronutrient blends (monohydrate)
- Zinc source in animal feed premixes
- Viscose rayon, electroplating and zinc chemicals
Packing options
- 25 kg & 50 kg PP bags with PE liner
- Jumbo bags
Storage & handling
Store dry in closed bags. Zinc sulphate is classified as environmentally hazardous for transport (UN 3077).
Documentation
Certificate of Analysis, MSDS, Certificate of Origin, dangerous goods declaration where applicable, and third-party pre-shipment inspection on request.
Typical specification
- Zinc (Zn)
- Heptahydrate ≥ 21%; monohydrate ≥ 33%
- Sulphur (S)
- Heptahydrate about 10%; monohydrate about 15%
- Lead and cadmium
- Within limits of destination fertiliser or feed regulation
- CAS number
- 7446-20-0 (heptahydrate); 7446-19-7 (monohydrate)
Typical values for reference. The exact specification is agreed before the order and confirmed on the Certificate of Analysis for each batch.
Zinc Sulphate — frequently asked
Zinc sulphate heptahydrate (21% Zn) dissolves quickly and suits foliar sprays and fertigation. Monohydrate (33% Zn) is more concentrated and better for soil application, blending and feed premixes.
Zinc sulphate should not be mixed with phosphate fertilisers such as DAP in the same solution, as insoluble zinc phosphate forms and the zinc becomes unavailable. They are applied separately.
Foliar sprays commonly use about 0.5% zinc sulphate heptahydrate, often partly neutralised with lime to reduce leaf scorch. Local agronomic advice should be followed for each crop.
Yes. Chemtrade manufactures and exports Zinc Sulphate (CAS 7446-20-0) from Surat, Gujarat, India to more than 55 countries, for customers in Feed & Fertilizers. Send your grade, quantity and destination port for a quotation within one business day.
Every shipment of Zinc Sulphate from Chemtrade includes a batch-specific Certificate of Analysis (COA) and Material Safety Data Sheet (MSDS). Certificate of Origin, third-party pre-shipment inspection and destination-specific regulatory documentation are arranged on request.
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