Zinc Sulphate Heptahydrate 21% — Micronutrient Fertilizer
Rate on enquiry
Supplied by the metric tonne (MT), packed in 25 kg and 50 kg HDPE / PP bags — 1 MT = 40 × 25 kg or 20 × 50 kg bags. Ex-factory Bhiwandi (Maharashtra); GST and freight extra.
Quantity in metric tonnes (MT)
Add every grade you need to your enquiry list, then send them in one go. Prices move with the market, so we quote to order — usually the same working day.
Zinc Sulphate Heptahydrate (21% Zn) is the traditional, highly soluble zinc source preferred for foliar sprays and fertigation. Its crystalline heptahydrate form dissolves rapidly and completely, making it gentler on foliage than the monohydrate grade.
CAS 7446-20-0 · MW 287.54 · Transparent crystalline granules
Standard Product Specification
| Characteristic | Specification |
|---|---|
| Zinc (as Zn), % by weight (min) | 21.0% |
| Sulphur (as S), % by weight (min) | 10.0% |
| Matter insoluble in water, % (max) | 1.0% |
| pH (5% solution) | Not less than 4.0 |
| Lead (as Pb), % (max) | 0.003% |
| Cadmium (as Cd), % (max) | 0.0025% |
| Arsenic (as As), % (max) | 0.01% |
Key Benefits
- Rapid, complete dissolution — ideal for foliar and drip application
- Lower scorch risk on tender foliage than monohydrate grade
- Corrects zinc deficiency symptoms quickly
- Supports enzyme activation, auxin production and chlorophyll formation
Recommended Crops
Paddy, wheat, maize, citrus, grapes, banana, cotton, vegetables, pulses and plantation crops.
Dosage & Application
- Foliar spray: 3–5 g per litre of water at 15-day intervals
- Soil application: 15–20 kg per acre as basal dose
- Fertigation: 2–3 kg per acre per application
Dosage is indicative. Follow local agronomic recommendations and soil test findings.
Packing & Supply
25 kg and 50 kg HDPE bags with liners. Custom packing on request. Supplied by the metric tonne (MT) — 1 MT = 40 × 25 kg bags or 20 × 50 kg bags.
Rate on enquiry — prices move with the market, so tell us the grade, quantity and delivery location and we will send a firm quotation, usually the same working day. Ex-factory Bhiwandi (Maharashtra); GST and freight extra.