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Green ferrous sulphate crystals

Product Detail

Ferrous Sulphate

FeSO4·7H2O heptahydrate, CAS 7782-63-0, 98%, green crystal or granular iron source. Assays are typical for evaluation and confirmed per batch COA.

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What it is / When to use

Iron sulphate raw material for chlorosis correction routes

RunziChem manufactures fertilizer-grade Ferrous Sulphate in China as heptahydrate (FeSO4·7H2O, 98%, CAS 7782-63-0), a green crystal or granular iron source for soil and foliar programs that corrects iron chlorosis. It ships in 25/50 kg export bags and jumbo bags with TDS, batch COA and SDS; typical values are confirmed per batch COA.

  • What it is Ferrous sulphate heptahydrate.
  • When to use Use it for iron-source programs where ferrous sulphate chemistry fits the formulation and local agronomy guidance.
  • Honesty note specifications are typical for evaluation; final values are confirmed per batch COA.
FeFerrous Sulphate
Green ferrous sulphate crystals

Specification

Typical specification for buyer evaluation

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

ProductFerrous Sulphate
Chemical nameFerrous sulphate heptahydrate
FormulaFeSO4·7H2O
CAS7782-63-0
Grade/Purity98%
AppearanceGreen crystal/granular
Content/AssayIron source; typical 98% grade confirmed per batch COA
Solubility29.5 g/100 mL water at 25 °C (heptahydrate)
ApplicationsCorrects iron chlorosis; soil and foliar routes
Packaging25 kg / 50 kg export bags, jumbo bags, and custom packaging on request
DocumentsTDS, current batch COA, and SDS available on request
Indicative priceUS$50–300 per metric ton, FOB Qingdao. Final quotation depends on grade, volume, and packaging — confirm per inquiry.

Applications

Where Ferrous Sulphate fits

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

Iron chlorosis

Used where programs require an iron source to correct iron-related chlorosis symptoms.

Soil route

Green crystal or granular forms support soil-applied and blend workflows.

Foliar route

Can be evaluated for foliar formulas where compatibility and local guidance support use.

Compare with chelates

EDTA micronutrients may be preferred for soluble or chelated iron routes.

Raw material blending

Fits fertilizer manufacturing where FeSO4·7H2O is the specified iron carrier.

COA confirmation

Final assay, appearance, and packaging are confirmed per current batch COA.

Packaging & Documents

Export packaging with batch-level documents

RunziChem supports standard export bags and procurement documents for review before order confirmation.

  • Packaging 25 kg / 50 kg export bags, jumbo bags, and custom packaging on request.
  • Documents TDS, current batch COA, SDS, packing list, and shipment documents on request.
  • Quality system ISO 9001-certified quality management, with final product values confirmed by batch COA.

Procurement note

Send target grade, annual volume, destination port, packaging preference, and application route. The export team can reply with the current specification, document set, and quotation.

25 kg 50 kg Jumbo bags Custom pack TDS COA SDS

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Buyer FAQ

Ferrous Sulphate questions

What is the difference between ferrous sulphate heptahydrate and the chelated EDTA-Fe option?
Ferrous Sulphate (FeSO4·7H2O) is an unchelated, lower-cost iron source that works well in soil-applied and blending programs. EDTA-Fe and EDDHA-Fe are chelated grades that stay plant-available across a wider pH range, which can matter on alkaline or calcareous soils. Choose based on cost, route, and local agronomy.
Why is ferrous sulphate solution acidic, and does that matter?
Dissolved ferrous sulphate gives a mildly acidic solution (around pH 3). This is normal for the heptahydrate and can help slightly lower the pH of foliar spray water. Always confirm tank-mix compatibility and local label guidance before combining with other inputs in a program.
Do you offer ferrous sulphate as a fine powder for faster dissolution?
Yes. Beyond standard green crystal and granular forms, RunziChem can supply ferrous sulphate as a 200-500 mesh fine micro-powder for faster dissolution and absorption in water-soluble and foliar formulations. Specify the form, mesh, and packaging you need when requesting a quotation.
Are the assay and iron content figures guaranteed?
No. The figures shown, including the ~98% typical assay and stoichiometric iron content, are representative values for buyer screening. The current batch certificate of analysis (COA) confirms final assay, iron content, appearance, and quality before shipment.

Request Ferrous Sulphate documents and price.

Send annual volume, destination market, packaging, and application route. RunziChem can provide TDS, current batch COA, SDS, and a formal quotation.

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