Disodium phosphate dodecahydrate CAS 10039-32-4

Chemical Name: Disodium phosphate dodecahydrate
CAS No.: 10039-32-4
Appearance: White crystalline powder
Assay:≥98.0%

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Disodium Phosphate Dodecahydrate (CAS 10039-32-4) Ultimate Guide

Table of Contents

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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