| Fe(Fe3+), % |
19,5 ± 1,0 |
| Fe(Fe2+), % |
less 1,0 |
| Free acid (H2SO4) |
less 1,5 |
| SO4, % |
54,0 ± 2,0 |
| pH |
less 2,0 |
| Bulk density, g/cm3 |
near 1,2 |
| Water-insoluble substance,%, not more |
1,0 |
| Trace elements, mg / kg, no more than: | |
| Arsenic |
0,2 |
| Cadmium |
0,1 |
| Chrome |
20 |
| Nickel |
0,1 |
| Mercury II |
50 |
| Plumbum |
5 |
| Selenium |
1,0 |
| Particle size, mm: | |
| 95 % |
1,0-3,0 |
| < 3 % |
less 0,2 |
| < 1 % |
more 5 |
Iron sulphate 9-water has a different name - Ferrum sulfate III 9-water
In aqueous solutions it acquires a reddish-brown tinge.
In nature it is in the form of a Cokimbite crystal. On the surface, the natural mineral is not stable.
An interesting fact - ferrous sulphate is discovered by one of the research rovers on the surface of Mars. Due to the low density of this material, having driven on it, the Mars rover got stuck.
The main application is in metallurgy and as a coagulant for industrial waste.
One of the methods of preparation is the interaction of iron sulfate II or iron sulphide with nitric acid.
The product is hygroscopic - it absorbs moisture from the air - spreads out in the open air.
Want to order this product now? Call us: +7 (495) 133-02-40
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Yes, iron(III) sulfate 9-hydrate and ferric sulfate 9-hydrate are names for the same substance with the formula Fe₂(SO₄)₃·9H₂O. The name Ferrum sulfuricum oxydatum 9H₂O may also appear in documents. When purchasing, it is important to check GOST 9485-74, the mass fraction of Fe³⁺, Fe²⁺, sulfates, free acid, pH, insoluble substances and trace elements. This helps match the batch to the enterprise’s incoming inspection requirements.
When receiving iron(III) sulfate 9-hydrate, the integrity of the big bags, labelling, production date, quality certificate and the batch’s compliance with GOST 9485-74 are checked. Laboratory control looks at the content of Fe³⁺, Fe²⁺, SO₄, free sulfuric acid, pH, bulk density, water-insoluble substances and trace elements. Visually, the product should be greenish-yellow granules, without wetting, contamination or large foreign inclusions.
Iron(III) sulfate 9-hydrate is hygroscopic, so on contact with humid air it can absorb water and become sticky. For a warehouse this means a risk of caking, worse dosing, packaging contamination and a change in the batch’s actual condition. If the product arrives showing signs of wetting, it is better to check it before transferring it into use: assess appearance, solubility, pH and compliance with the quality certificate. Opened packaging should not be left open longer than the process requires.
Iron(III) sulfate 9-hydrate is stored in an unheated warehouse, in sealed factory packaging and protected from moisture. Big bags are placed on a dry site or pallets, separately from substances that could contaminate the batch or come into undesirable contact with the acidic medium. For a wholesale buyer, the quality certificate, labelling, production date, batch traceability and observance of the guaranteed shelf life are important. Before transferring into use, it is advisable to check the condition of the granules and the absence of wetting.
Every minute matters so your production doesn't stand idle. That's why we've built our logistics so that ordering and receiving our reagents is easy, and delivery times are predictable.
We deliver across Russia. We've built our processes so that distance is not an obstacle to a fast delivery.
Choosing a carrier: We work with trusted transport companies. Choose the one you trust — we will ship your cargo with it.
To your warehouse or pickup: We will deliver the batch directly to your warehouse. Or, if it's more convenient, pick it up yourself from ours.
Speed: In most regions, delivery takes from 1 to 7 business days. Need it faster? We can discuss urgent options.
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Bank transfer for organizations against an issued invoice.
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