Dehydrated Industrial Aluminum Sulphate – High-Purity Solid Grade for Stable Storage and Industrial Handling
Dehydrated Industrial Aluminum Sulphate is a high-purity aluminum sulfate product manufactured with controlled dehydration and strict impurity limits. With a typical content of ≥99.0%, this solid grade is designed for industrial and process applications where low ionic contamination, system cleanliness, and storage stability are critical.
For an overview of aluminum sulfate types and industrial forms, please refer toindustrial aluminum sulfate classifications and applications.
Compared with conventional hydrated or liquid aluminum sulfate, dehydrated industrial grades provide improved resistance to moisture uptake, reduced caking tendency, and predictable dissolution behavior during long-term storage and transport.
When to Select Dehydrated Industrial Aluminum Sulphate
Applications requiring high chemical purity and minimal secondary ions
Industrial systems sensitive to iron, alkali metals, or insoluble residues
Facilities operating dry feeding or on-site dissolution systems
Projects involving long-distance transportation or extended storage periods
These selection considerations are commonly encountered inindustrial wastewater treatment systems using solid aluminum-based coagulants,
as well as in process water applications where system stability and cleanliness are essential.
Dehydrated vs Conventional Aluminum Sulphate Forms
| Parameter | Dehydrated Industrial Grade | Hydrated / Conventional Forms |
| Moisture Content | Low, controlled | Higher, variable |
| Caking Tendency | Reduced | Higher under humid conditions |
| Ionic Impurities | Strictly limited | Less controlled |
| Storage Stability | Improved for long-term storage | Limited in adverse environments |
| Typical Use | Purity- and system-sensitive applications | General industrial use |
Typical Technical Data (High-Purity Dehydrated Grade)
| Item | Analytical Purity | Chemical Purity |
| Appearance | White powder crystals | White powder crystals |
| Content | ≥ 99.0% | ≥ 99.0% |
| pH (50 g/L, 25°C) | ≥ 2.5 | ≥ 2.5 |
| Clarity Test | Standard No. 4 | Standard No. 6 |
| Water Insoluble Matter | ≤ 0.02% | ≤ 0.05% |
| Ammonia (Cl) | ≤ 0.002% | ≤ 0.01% |
| NH₄⁺ | ≤ 0.005% | ≤ 0.02% |
| Sodium (Na) | ≤ 0.02% | ≤ 0.1% |
| Magnesium (Mg) | ≤ 0.002% | ≤ 0.004% |
| Potassium (K) | ≤ 0.005% | ≤ 0.01% |
| Calcium (Ca) | ≤ 0.01% | ≤ 0.02% |
| Iron (Fe) | ≤ 0.003% | ≤ 0.01% |
| Heavy Metals (Pb) | ≤ 0.001% | ≤ 0.002% |
These specifications represent high-purity dehydrated aluminum sulphate grades intended for applications where low impurity levels, stable dissolution behavior, and system cleanliness are required. Selection between analytical and chemical purity grades depends on process tolerance and quality control requirements.
Application Context
Dehydrated Industrial Aluminum Sulphate is used in industrial wastewater treatment, papermaking, and process water systems where solid chemical handling, impurity control, and long-term storage stability are critical. Its low iron and low insoluble content make it suitable for applications where secondary contamination must be minimized.
In papermaking and wet-end operations, dehydrated high-purity grades are often selected to support stable dosing and storage performance, as discussed inaluminum sulfate wet-end functions in papermaking.
Supply Forms and Packaging
Available forms: dehydrated powder or granular
Typical packaging: 25 kg bags, 1 MT big bags
Storage: dry, well-ventilated conditions recommended to prevent moisture absorption
Industrial Supply Considerations
Dehydrated Industrial Aluminum Sulphate is typically specified when purity control, logistics reliability, and system stability are critical to continuous operation. Technical documentation, COA parameters, and packaging options can be provided to support evaluation, compliance, and long-term industrial supply.
