Premium Non-ferric Aluminium Sulphate by Aure Chemical
Non-ferric Aluminium Sulphate, also known as iron-free alum, is a high-purity form of aluminum sulfate. Its molecular formula is Al₂(SO₄)₃·xH₂O, and its molecular weight is 342.15 (for the anhydrous form, Al₂(SO₄)₃). This product is valued for its purity and lack of iron impurities, which makes it ideal for sensitive applications.
It appears as a white solid—in flake, granular, or powder form—or a colorless, transparent liquid. It has a specific gravity of 1.69, absorbs moisture easily, and can agglomerate. Its dehydration temperature is 86.5°C. The substance is soluble in water, acid, and alkali, but is insoluble in alcohol. An aqueous solution of non-ferric aluminum sulphate is acidic and has a characteristic flavor that is both acidic and astringent. When heated to 530°C, it begins to decompose, with the process completing at 860°C, leaving γ-Al₂O₃ as the final decomposition product.
Product Specification
Our Non-ferric Aluminium Sulphate is available in First Grade specifications, ensuring it meets strict industry standards.
| Items | First Grade |
| Appearance | White Flake/Granular |
| AL2O3 % | ≥17.0 |
| Fe % | ≤0.005 |
| PH (1% solution) | ≥3.0 |
| Water insoluble % | ≤0.1 |
| Pb % | ≤0.001 |
| As % | ≤0.0004 |
| Hg % | ≤0.00002 |
| Cr % | ≤0.001 |
| Cd % | ≤0.0002 |
If you have specific requirements for product parameters, please Contact Us.Applications of Non-ferric Aluminium Sulphate
Non-ferric aluminium sulphate is a versatile chemical used across various industries due to its effectiveness as a coagulant and flocculant. Its main applications include:
Water Treatment: Used as a primary coagulant in water purification and wastewater treatment to remove suspended particles, heavy metals, and phosphorus.
Paper Manufacturing: It functions as a sizing agent, a retention and drainage aid, and a filling and binding agent to improve the quality, brightness, and ink receptivity of paper.
Other Industrial Uses: It is also used in the processing of uranium dioxide, as a catalyst carrier, in fire-fighting foam, as a flame retardant for insulation materials, as a refractory additive, and as a raw material for artificial gems. Additionally, it's used in the textile industry as a mordant for dyeing and printing, in leather tanning, and in the food industry as a firming agent.
Packaging and Size
We offer a range of sizes to meet different application needs:
 |  |  |
| 2-5mm/ 1-3m | 2-15cm | Pass 30-40 mesh |
| Granular | Flake | Powder |
At Aure Chemical, we understand the critical importance of rigorous packaging, transportation, and storage for chemical products. To ensure the safety and integrity of the products you purchase, and to comply with international and national regulations, Please note that each specific product has its own Safety Data Sheet (SDS), which contains the most detailed and authoritative information on packaging, transportation, and storage. We strongly advise you to consult and strictly adhere to the SDS for the respective product.
