Sodium Aluminate
Premium Sodium Aluminate for Industrial Applications
Sodium Aluminate is a highly effective chemical compound widely used in water treatment, paper manufacturing, and construction industries. Our high-purity Sodium Aluminate solution delivers exceptional performance for your industrial processes.
Key Specifications
- Chemical Formula: NaAlO2
- Appearance: White crystalline powder or colorless solution
- Al2O3 Content: 50-56%
- Na2O Content: 30-35%
- Solubility: Completely soluble in water
- pH Value (10% solution): 11.5-12.5
Technical Parameters
| Parameter | Specification | Testing Method |
|---|---|---|
| Alumina (Al2O3) | ≥54% | GB/T 22660.1-2008 |
| Sodium Oxide (Na2O) | 32-36% | GB/T 22660.2-2008 |
| Iron (Fe) | ≤0.01% | ICP-OES |
| Insoluble Matter | ≤0.1% | Gravimetric |
| Specific Gravity (20°C) | 1.5-1.6 g/cm3 | Hydrometer |
Applications of Sodium Aluminate
- Water Treatment: Effective coagulant for removing phosphates and silica
- Paper Industry: Improves paper strength and sizing properties
- Construction: Accelerates concrete setting time
- Textile Industry: Mordant in dyeing processes
- Zeolite Production: Key raw material for synthetic zeolites
Packaging Options
| Form | Package Type | Weight |
|---|---|---|
| Powder | 25 kg bags | 25 kg ± 0.5 kg |
| Powder | 1000 kg bulk bags | 1000 kg ± 5 kg |
| Liquid | 250 kg drums | 250 kg ± 2 kg |
| Liquid | 1000 kg IBC tanks | 1000 kg ± 10 kg |
Sodium Aluminate FAQ
What is the shelf life of Sodium Aluminate?
Powdered Sodium Aluminate has a shelf life of 24 months when stored properly in cool, dry conditions. Liquid Sodium Aluminate should be used within 12 months of production and kept in sealed containers to prevent carbonation. Always store away from acidic materials and moisture.
How does Sodium Aluminate compare to aluminum sulfate in water treatment?
Sodium Aluminate offers several advantages over aluminum sulfate: it works effectively in both acidic and alkaline pH ranges, produces less sludge, and doesn't reduce water pH. However, it's generally more expensive. The choice depends on specific water characteristics and treatment objectives.
What safety precautions should be taken when handling Sodium Aluminate?
Always wear appropriate PPE including goggles, gloves, and protective clothing. Sodium Aluminate is alkaline and can cause skin and eye irritation. In case of contact, rinse immediately with plenty of water. Ensure good ventilation in storage areas and avoid creating dust when handling the powder form.
Can Sodium Aluminate be used in drinking water treatment?
Yes, Sodium Aluminate is NSF/ANSI Standard 60 certified for use in drinking water treatment when produced according to food-grade specifications. It effectively removes suspended solids, phosphates, and fluoride while meeting strict purity requirements for potable water applications.
What is the recommended dosage of Sodium Aluminate in concrete applications?
Typical dosage ranges from 0.5% to 2.5% by weight of cement, depending on desired setting time acceleration. For precise formulations, conduct small-scale tests as effectiveness varies with cement composition, temperature, and mix design. Exceeding 3% may cause flash setting.
How should Sodium Aluminate solution be prepared from powder?
Dissolve Sodium Aluminate powder in warm water (40-50°C) at a ratio of approximately 1:4 (powder:water) by weight, stirring continuously until completely dissolved. The solution should be prepared in corrosion-resistant containers and used within 24 hours for optimal performance.
Storage Recommendations
- Store in original, tightly sealed containers
- Keep in cool, dry, well-ventilated area
- Maintain storage temperature between 5°C to 30°C
- Keep away from acids, organic materials, and moisture
- Use plastic or rubber-lined containers for liquid storage
Quality Certifications
Our Sodium Aluminate meets the following international standards:
- ISO 9001:2015 Quality Management System
- ISO 14001:2015 Environmental Management System
- NSF/ANSI Standard 60 for drinking water treatment
- REACH compliant for European market
- FDA 21 CFR compliance for specific applications