Ferrous Sulphate Water Treatment
Ferrous sulfate improves water quality by removing phosphates and controlling algae.
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Ferrous Sulphate
- Product Name: Ferrous Sulphate
- CAS Number: 7720-78-7
- EINECS NO.: 231-753-5
- HS.Code: 2833.29
- Molecular Formula: FeSO4·xH2O
- Purity (%): 90% to 99%
- Appearance: Blue-green or white crystals
- Packing: Bags, drums, or bulk containers
- Synonyms Name: Iron(II) Sulfate; lron Sulfate; Green Vitriol; Copperas
Ferrous Sulphate Specification
| ITEMS | SPECIFICATIONS |
| Content(FeSO4.1H2O) | 91.4%Min |
| Fe | 30%MIN |
| Pb | 20PPM MAX |
| As | 2PPM MAX |
| Cd | 1ppm Max |
| Size (Through 180um sieve ) | 95%MIN |
| ITEMS | SPECIFICATIONS |
| Assay(FeSO4·7H2O) | 90%Min |
| TiO2 | 0.75%Min |
| Insoluble matter | 0.5% Max |
| Free acid (As H2SO4) | 1.00%Max |
| Arsenic (As) | 1ppm Max |
| Lead(Pb) | 5ppm Max |
Types of Ferrous Sulphate
Monohydrate vs. Heptahydrate: How to choose?
| Feature | Ferrous Sulphate Heptahydrate (Hepta) | Ferrous Sulphate Monohydrate (Mono) |
| Iron Content | Lower (Approx. 19%) | Higher (Approx. 30%) |
| Physical Form | Moist crystals; prone to moisture absorption and caking | Dry powder/granules; excellent flowability |
| Shipping Cost | Higher (includes weight of 7 hydration waters) | Lower (More cost-effective freight per unit of iron) |
| Shelf Life | Short (Prone to discoloration/oxidation) | Long (Highly stable performance) |
| Best For | Local supply; low-cost wastewater treatment | Ocean export; animal feed; premium fertilizers |
What is Ferrous Sulphate Used for?
- Wastewater Treatment: Removes phosphates and controls algae/microorganisms.
- Water Treatment: Removes hydrogen sulfide and heavy metals by forming insoluble precipitates.
- Iron Supplements: Treats/prevents iron-deficiency anemia by providing bioavailable iron.
- Fertilizers: Supplies essential iron for plant growth and chlorophyll production.
- Dyeing and Printing: Acts as a mordant to fix dyes onto fabrics.
FAQ of Ferrous Sulphate
This is oxidation caused by moisture and air exposure.
While still usable for some industrial tasks, its nutritional value (for plants/animals) decreases.
Our Solution: Hoochemtec provide fresh production and double-layered moisture-proof bags to prevent this.
Yes. Our Feed Grade is strictly tested for low heavy metals (Lead, Arsenic, Cadmium).
Ferrous Sulphate effectively treats plant yellowing (Chlorosis) and iron deficiency in livestock.
It is a powerful reducing agent.
It excels at removing Chromium (VI), decoloring dye-water, and precipitating phosphates.
Ferrous Sulphate can be transported in bags, containers, or big bags.
Ferrous sulfate should be stored in a sealed, light-proof, and moisture-proof container, and should be stored separately from oxidants and alkalis.
Ferrous Sulphate Supplier - Hoochemtec
We offer high-purity Ferrous Sulphate tailored to your specific needs. Our Monohydrate (30% Fe) is the gold standard for feed and fertilizer due to its excellent stability and low heavy metals. If you are in the wastewater treatment sector, our Heptahydrate provides the most cost-effective solution for decoloring and chromium reduction. With optimized logistics and strict quality control, we ensure your supply remains stable and effective.
- High-Purity Raw Materials: We use industrial-grade high-purity hydrochloric acid and carefully selected mineral powders, strictly controlling heavy metal residues in the product to ensure that the treated water meets environmental requirements.
- Optimized Stability: Our FAC liquid version undergoes special stabilization treatment, preventing stratification and clumping during long-term storage, making it easy to pump.
- Customized Solutions: Based on the customer’s water quality, we can adjust the Fe/Al ratio to provide you with the most cost-effective customized composite chemical agent.


