Premium Non-ferric Aluminum Sulfate by Aure Chemical
Non-ferric Aluminum Sulfate, 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 Aluminum Sulfate 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 Aluminum Sulfate
Non-ferric aluminium sulfate 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 |
Safety & Storage
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.
Hazards Identification
Product: Non-ferric Aluminum Sulfate (Al₂(SO₄)₃·xH₂O), CAS 10043-01-3
GHS Classification: Not classified as dangerous; may cause skin/eye irritation and respiratory irritation as dust or in concentrated solution.
Hazard Statements (typical): H319 (Causes serious eye irritation), H315 (Causes skin irritation), H335 (May cause respiratory irritation).
Precautionary: P280 (Wear protective gloves/eye protection), P264 (Wash hands after handling), P261 (Avoid breathing dust), P305+P351+P338 (IF IN EYES: Rinse cautiously...).
pH Behavior: Aqueous solutions are acidic; concentrated solutions may be corrosive to some metals.
Safety Precautions
Handle with adequate ventilation; avoid dust generation and inhalation.
Wear protective gloves, goggles/face shield, and suitable protective clothing.
Do not eat, drink or smoke when using this product; wash hands thoroughly after handling.
In case of contact: rinse skin with water; flush eyes with water for at least 15 minutes and seek medical advice if irritation persists.
Storage Conditions
Store in a cool, dry, well-ventilated place, away from moisture and incompatible materials.
Keep container tightly closed; protect from humidity to prevent caking and solution formation.
Separate from alkalis, strong bases, and reducing agents; avoid contact with reactive metals when wet (acidic solutions).
Recommended storage temperature: ambient; avoid freezing for liquid grades.
Packaging Options
Solid (granular/powder): 25 kg PP woven bags with PE liner; 25 kg kraft paper bags with inner liner; 500–1000 kg FIBC big bags (lined).
Liquid (solution): 25–35% w/w in 250 kg HDPE drums, 1000 L IBC totes, or bulk tank deliveries.
Custom packaging available upon request to meet local regulations and handling needs.
Transport Information
UN Number: Not applicable
DG Status: Not regulated as a dangerous good under ADR/RID, IMDG, or IATA (check local/regional requirements).
Proper Shipping Name: Aluminum sulfate (non-ferric), not dangerous for transport
Labeling: General cargo; keep dry; avoid damage and spillage.
Spill & Disposal
GHS07: Irritant / HarmfulNote: Classification may vary by region and grade (solid vs. solution). Always refer to the latest SDS provided by Aure Chemical for your specific product lot.
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