Disodium Phosphate Dodecahydrate (CAS 10039-32-4) Ultimate Guide
Table of Contents
- 1. Product Specifications & Comparative Analysis
- 2. Industrial Applications & Functional Uses
- 3. Operational Guidelines & Best Practices
- 4. Verified Customer Success Stories
- 5. Technical Consultation & Ordering Information
1. Technical Specifications & Comparative Analysis
| Parameter | Disodium Phosphate Dodecahydrate | Anhydrous Disodium Phosphate |
|---|---|---|
| CAS Number | 10039-32-4 | 7558-79-4 |
| Molecular Formula | Na₂HPO₄·12H₂O | Na₂HPO₄ |
| Molecular Weight | 358.14 g/mol | 141.96 g/mol |
| Appearance | White crystalline powder | White granular powder |
| pH (1% Solution) | 8.5-9.5 | 8.5-9.5 |
| Solubility | 58 g/100mL (20°C) | 12 g/100mL (20°C) |
2. Industrial Applications & Functional Uses
Core Functional Properties
- pH buffer in biological systems (effective range 6.0-9.0)
- Water hardness precipitation agent
- Dispersant in ceramic production
- Nutritional supplement in animal feed
Industry-Specific Implementations
- Food Processing: Emulsifier in cheese products (0.2-0.5% w/w)
- Pharmaceuticals: Tablet disintegration agent (3-7% concentration)
- Water Treatment: Scale inhibitor in cooling towers (50-200 ppm)
- Textile Manufacturing: Dye-fixing agent (1-2 g/L solution)
3. Operational Guidelines & Best Practices
Recommended Handling Protocols
- Storage: Maintain below 25°C with ≤65% RH
- Dissolution: Use deionized water at 40-50°C for rapid dissolution
- Incompatibilities: Avoid contact with strong acids or oxidizers
Dosage Recommendations
| Application | Concentration Range | Mixing Protocol |
|---|---|---|
| Food Additive | 0.1-0.3% | Dry blend before thermal processing |
| Water Treatment | 50-150 ppm | Continuous feed system required |
4. Verified Customer Success Stories
Case Study 1: Dairy Processing Plant (Netherlands)
- Challenge: Protein precipitation in UHT milk production
- Solution: 0.25% DSP addition in milk standardization
- Outcome: 40% reduction in protein aggregation
Case Study 2: Municipal Water Treatment (Canada)
- Challenge: Scale formation in distribution pipelines
- Solution: 75 ppm continuous DSP injection
- Outcome: 18-month maintenance cycle extended to 5 years
5. Technical Consultation & Ordering Information
Contact our phosphate specialists for:
- Customized formulation support
- Bulk order pricing (25kg/50kg drums)
- Technical documentation (SDS, CoA)
Reach our chemical solutions team:
Email: info@vivalr.com
Tel: (86) 15866781826



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