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White zinc sulphate powder and granules

Zinc sulphate supplier in China

Zinc Sulphate Monohydrate 35% and Heptahydrate

RunziChem supplies 98% zinc sulphate as monohydrate with typical Zn 33-35% or heptahydrate with typical Zn 21%. Buyers can screen white powder and 2-4 mm granular forms, then confirm final values against the current batch COA.

Request zinc sulphate quote Compare grades and specs

Grade selection

Choose monohydrate or heptahydrate by zinc target and form

RunziChem supplies zinc sulphate from China for soil application and dry fertilizer blending. Both grades are listed at 98% purity and are available for buyer screening in white powder or 2-4 mm granular forms, with 25 kg or 50 kg export bags and supporting TDS, batch COA and SDS.

  • Monohydrate ZnSO4·H2O, CAS 7446-19-7, with typical Zn 33-35%.
  • Heptahydrate ZnSO4·7H2O, CAS 7446-20-0, with typical Zn 21%.
  • Application route Choose zinc sulphate for soil or fertilizer blending. Compare EDTA-Zn for soluble foliar, drip or hydroponic programs.
  • Final specification Website values are typical for evaluation. The current batch COA confirms the shipment values.
Zn 33-35%Zinc Sulphate
White zinc sulphate powder and granules

Specification

Zinc sulphate monohydrate and heptahydrate specifications

Formula, CAS, purity, appearance, content, solubility, packaging, and document availability are shown for procurement screening. Final values are confirmed per batch COA.

ProductZinc Sulphate
Chemical nameZinc sulphate monohydrate / zinc sulphate heptahydrate
FormulaZnSO4·H2O / ZnSO4·7H2O
CAS7446-19-7 (monohydrate) / 7446-20-0 (heptahydrate)
Grade/Purity98%
AppearanceWhite powder/granular (2-4mm)
Content/AssayZn 33-35% monohydrate; Zn 21% heptahydrate; typical values confirmed per batch COA
Solubility57.7 g/100 mL water at 20 °C (anhydrous ZnSO4 basis)
ApplicationsZinc source for soil, blend, and crop nutrition programs
Packaging25 kg / 50 kg export bags, jumbo bags, and custom packaging on request
DocumentsTDS, current batch COA, and SDS available on request
Indicative priceUS$450 to 1,200 per metric ton, FOB Qingdao. Final quotation depends on grade, volume and packaging. Confirm the current price per inquiry.

Applications

Where Zinc Sulphate fits

Confirm crop, rate, compatibility, and local label requirements before application.

Soil zinc

A practical zinc source for soil-applied programs and broad fertilizer blending.

Monohydrate grade

ZnSO4·H2O is listed with Zn 33-35% and CAS 7446-19-7.

Heptahydrate grade

ZnSO4·7H2O is listed with Zn 21% and CAS 7446-20-0.

Powder or granular

White powder and 2-4 mm granular forms can be discussed by buyer route.

Compare with EDTA

For foliar, drip, hydroponic, and fully soluble chelate routes, compare EDTA Chelated Micronutrients.

Batch documents

TDS, COA, and SDS support procurement and formulation review.

Quotation checklist

What to send for a zinc sulphate quotation

Specify the grade and physical form first so the export team can match the correct specification and pack.

  • Grade and form State monohydrate or heptahydrate, plus powder, mesh or granular requirements.
  • Volume and destination Include annual volume and destination port or market.
  • Packaging Choose 25 kg or 50 kg export bags, jumbo bags, or request custom packaging.
  • Documents TDS, current batch COA, SDS, packing list and shipment documents are available on request.
  • Quality system ISO 9001-certified quality management, with final product values confirmed by batch COA.

What you receive

The export team can reply with the current specification, available document set and quotation. If you also source other inputs, compare the full fertilizer raw material range before sending one combined RFQ.

25 kg 50 kg Jumbo bags Custom pack TDS COA SDS

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Buyer FAQ

Zinc sulphate sourcing questions

What is the difference between zinc sulphate monohydrate and heptahydrate?
The two grades differ in water of crystallisation and zinc concentration. Monohydrate (ZnSO4·H2O, CAS 7446-19-7) carries roughly Zn 35% and is more concentrated, while heptahydrate (ZnSO4·7H2O, CAS 7446-20-0, MW 287.54) carries about Zn 21%. Choose by target zinc loading and blend route.
Which form should I use for soil versus foliar zinc programs?
Zinc sulphate suits soil application and dry fertilizer blending where a sulphate raw material is specified. For fully soluble foliar, drip, or hydroponic zinc programs, compare RunziChem EDTA Chelated Micronutrients (EDTA-Zn), which stay chelated and stable across a wider pH range than a straight sulphate.
What particle sizes and granular grades are available?
Zinc sulphate is offered as standard powder, 200-500 mesh micro-powder for faster dissolution, and granular grades including 21% and 33% granular zinc. The exact form, mesh, and granule grade are confirmed against your blending or application route before order.
Are the zinc and purity values guaranteed?
No. Website figures such as the zinc percentages are typical or representative for buyer screening. The current batch certificate of analysis confirms the final assay, zinc content, appearance, and quality values for the lot you receive.
What should I include in a zinc sulphate request for quotation?
Send the target monohydrate or heptahydrate grade, powder or granular form, annual volume, destination port or market, packaging preference, and application route. RunziChem can reply with the current specification, available document set, and a quotation.

Request a zinc sulphate quotation

Send the monohydrate or heptahydrate grade, physical form, annual volume, destination, packaging and application route. RunziChem can reply with the current specification, available TDS, batch COA, SDS and a formal quotation.

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