Water Treatment
Ferric Chloride
Iron(III) chloride
Iron-based coagulant for wastewater and drinking water, also used for metal etching.
Applications
- Coagulation & flocculation
- Wastewater treatment
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Water Treatment
Ferrous Sulphate
FeSO4
Iron salt used as a coagulant and reducing agent, an iron source for agriculture and a cement additive.
- Chemical name
- Iron(II) sulfate
- CAS number
- 7720-78-7
- Also known as
- Ferrous sulfate, Iron(II) sulfate, Copperas
Product overview
Ferrous sulphate is an iron(II) salt, most commonly traded as the green crystalline heptahydrate. It acts as both a coagulant and a reducing agent.
In water and wastewater treatment it is used for coagulation and phosphate removal. Agricultural users apply it to correct iron deficiency in soils and plants, and cement producers use it to reduce hexavalent chromium.
Applications
- Coagulation & flocculation
- Wastewater treatment
- Fertilizers & soil conditioning
- Cement, concrete & mortar
Typical uses for this chemical. Suitability for a specific process, and grade requirements for food, pharmaceutical or potable-water use, should be confirmed with our team.
Technical information
| Chemical name | Iron(II) sulfate |
|---|---|
| Formula | FeSO4 |
| CAS number | 7720-78-7 (anhydrous)7782-63-0 (heptahydrate) |
| Molecular weight | 151.91 (anhydrous FeSO4); 278.02 (heptahydrate FeSO4·7H2O); 169.93 (monohydrate FeSO4·H2O) |
| HS code | 2833.29 |
| Transport classification | Not regulated for transport |
| Appearance | Heptahydrate: pale green to blue-green crystals (moist 'copperas' grades are damp green salt); Monohydrate: grey to grey-green / off-white powder or granules |
| Forms | Heptahydrate crystals (dry) · Heptahydrate moist salt (TiO2 by-product copperas) · Monohydrate powder · Monohydrate granules |
| Grades | Water treatment grade (EN 889 / GB/T 10531) · Feed grade (monohydrate) · Agricultural / fertilizer grade · Cement grade (Cr(VI) reducing agent) |
| Packaging | 25 kg PE or paper bags · 1,000 kg big bags (bulker bags) · Bulk by tipper / dry-bulk road tanker · IBC (monohydrate) |
Identifiers and classifications are standard reference data for the substance. Forms, grades and packaging reflect what is commonly traded internationally; availability for your order is confirmed in the quotation.
Typical specifications
Typical values for commonly traded grades of Ferrous Sulphate, based on international standards and published manufacturer data.
Heptahydrate (typical)
| Parameter | Typical value |
|---|---|
| FeSO4·7H2O content | ≥98.0% |
| Iron (Fe2+) | approx. 19.7% (dry crystals); approx. 17–18% (moist grades) |
| Titanium dioxide (TiO2) | ≤0.5% |
| Water-insoluble matter | ≤0.5% (typ. approx. 0.1%) |
| Free acid (as H2SO4) | ≤1.0% |
| Residual moisture (moist grades) | <4% |
| Heavy metals (As, Pb, Cd, Hg) | typically <1 mg/kg each |
| Apparent / bulk density | approx. 1.0 t/m³ |
| pH (saturated solution) | approx. 2 |
Monohydrate (typical)
| Parameter | Typical value |
|---|---|
| Iron (Fe2+) | ≥29–30% (typ. 30–31.6%) |
| FeSO4·H2O content | ≥91% (equivalent to 30% Fe, calculated) |
| Moisture | <1% |
| Manganese (Mn) | ≤0.2% |
| Arsenic (As) | <5 mg/kg |
| Lead (Pb) | ≤3 mg/kg |
| Cadmium (Cd) | <1 mg/kg |
| Mercury (Hg) | <0.1 mg/kg |
| Bulk density | approx. 1.4 t/m³ (powder); approx. 1.7 t/m³ (granules) |
| Particle size | Powder d95 approx. 0.3 mm; granules 0.3–1.0 mm |
Reference standards:EN 889AWWA B402GB/T 10531IS 262
Heptahydrate is the standard water-treatment form; monohydrate (about 30% Fe) is preferred for feed and fertiliser blending.
Typical values are for guidance. The specification for your order depends on grade and origin and is confirmed in the quotation, Technical Data Sheet and Certificate of Analysis.
Packaging
- 25 kg PE or paper bags
- 1,000 kg big bags (bulker bags)
- Bulk by tipper / dry-bulk road tanker
- IBC (monohydrate)
Packaging commonly used for export shipments of this product. Availability depends on grade and origin and is confirmed per order.
Packaging confirmed per order
Tell us your preferred packaging and handling requirements — we'll confirm available options for your grade, volume and destination.
Industries
Documentation
Request the documents you need to evaluate Ferrous Sulphate. We send documents that match the grade being quoted.
- TDS
Technical Data Sheets
Product specifications and technical information.
- SDS
Safety Data Sheets
Safety and handling documentation where available.
- COA
Certificate of Analysis
Batch-specific documentation where applicable.
Request a Quote
Get a quotation for Ferrous Sulphate
Share your quantity and destination — our export team will confirm grade, packaging and pricing.
Frequently asked questions
What grades of Ferrous Sulphate are available?
Ferrous Sulphate is commonly traded as Water treatment grade (EN 889 / GB/T 10531); Feed grade (monohydrate); Agricultural / fertilizer grade; Cement grade (Cr(VI) reducing agent). Availability varies by origin and destination market — share the grade, purity or standard you require and we will confirm what can be supplied, with the current specification.
What is the HS code for Ferrous Sulphate?
Ferrous Sulphate is usually classified under HS 2833.29. National tariff codes add further digits and can differ by form and country, so confirm the full code with your customs broker before shipment.
Is Ferrous Sulphate a dangerous good for shipping?
Ferrous Sulphate is generally not regulated as a dangerous good for road, sea or air transport. The Safety Data Sheet for the grade shipped is the reference used when booking freight.
Which standards apply to Ferrous Sulphate?
Commonly referenced standards include EN 889, AWWA B402, GB/T 10531, IS 262. Tell us which standard your application or market requires and we will confirm a grade that meets it.
How is Ferrous Sulphate packed for export?
Common export packaging for Ferrous Sulphate includes 25 kg PE or paper bags; 1,000 kg big bags (bulker bags); Bulk by tipper / dry-bulk road tanker; IBC (monohydrate). Tell us your preferred packaging and we will confirm what is available for your grade and volume.
Can I get the TDS, SDS or COA for Ferrous Sulphate?
Yes — request them on this page. We send the documents that apply to the specific grade you are evaluating; a Certificate of Analysis is batch-specific and issued where applicable.
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