white powder with possible shades of different colors
| Parameter name | Value |
|---|---|
| Mass fraction 18-water aluminum sulphate (Al2 (SO4) 3 x 18H2O) | 95,0% min |
| Mass fraction of water-insoluble (H2O) substances | 0,05% max |
| Mass fraction of ammonium (NH4) | 0,02% max |
| Mass fraction of chlorides (Cl) | 0,01% max |
| Mass fraction of iron (Fe) | 0,01% max |
| Mass fraction of heavy metals (Pb) | 0,002% max |
| Mass fraction of calcium (Ca) | 0,02% max |
| Mass fraction of sodium (Na) | 0,25% max |
The largest part of the product produced is used for water purification.
For this process, the coagulant is placed in water that requires purification and is actively stirred (for the first few seconds) so that the contact of the substance with water is as uniform as possible in volume. Gradually (starting from 2 minutes), aluminum sulphate particles begin to "stick together" - they create larger agglomerates and more and more enlarged by their own weight they settle.
According to the norms, the water after purification and filtration should not contain aluminum sulphate.
The greatest effect is achieved at a water pH of 4.4.
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A solution of aluminium sulfate 18-hydrate is prepared in a clean, chemically resistant container, adding the product to water with constant stirring. For a stable result it is important to achieve complete dissolution of the crystals and exclude the ingress of mechanical impurities. The solution concentration is set according to the process regulations, not chosen arbitrarily. Before use in a production process, it is advisable to check the solution for clarity, absence of suspended matter and compliance with the required parameters.
Aluminium sulfate 18-hydrate pure grade is stored in a dry, unheated warehouse, in tightly closed factory packaging and protected from moisture. If storage conditions are violated, the product can cake, absorb moisture and become harder to dose when preparing solutions. Bags are placed on pallets, separately from incompatible substances and areas where contact with water is possible. For a wholesale buyer it is important to preserve the quality certificate, batch labelling, and take into account the guaranteed storage period stated by the manufacturer.
Yes, potassium cryolite and potassium fluoroaluminate are names for the product with the formula KAlF₄. The English name “potassium cryolite” may also appear in documents. When purchasing, it is important to check not only the name but also the mass fraction of fluorine, potassium, aluminium, sodium, sulfates, iron oxide, silicon dioxide, water and particle size. This helps accurately match the batch to the enterprise’s process documentation requirements.
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.
We understand that convenience also means flexible payment. That's why we offer different options:
Bank transfer for organizations against an issued invoice.
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This is the fastest way: you pay — and your order immediately goes into work.
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