sodium sulfate anhydrous cas 7757-82-6

Chemical Name:Sodium Sulfate Anhydrous
CAS No.:10039-56-2
Molecular Formula: Na2SO4
Molecular Weight:142.04
Appearance: Fine white crystal

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Sodium Sulfate Anhydrous (CAS 7757-82-6): Technical Guide & Industry Applications

1. Product Specifications & Comparative Analysis

Parameter Sodium Sulfate Anhydrous Alternative Compounds
CAS Number 7757-82-6 N/A
Molecular Formula Na2SO4 Na2CO3 (Soda Ash)
Molecular Weight 142.04 g/mol 105.99 g/mol
Appearance White crystalline powder White powder
Melting Point 884°C 851°C
Density 2.68 g/cm3 2.54 g/cm3
Solubility in Water 18.5 g/100 mL (20°C) 21.6 g/100 mL (20°C)
pH (5% Solution) 5.2–9.2 11.5–12.5

Key Advantages: Superior hygroscopic properties, high thermal stability (decomposes at 1404°C), and non-flammability make it ideal for high-temperature industrial processes.

2. Key Industrial & Commercial Applications

2.1 Core Industrial Uses

  • Detergent Manufacturing: Primary filler in powdered detergents (30–50% composition) for improved flow properties
  • Glass Production: Fluxing agent to eliminate air bubbles (replaces 10–15% of soda ash)
  • Textile Processing: Leveling agent in dye baths with 5–10 g/L concentration
  • Pulp & Paper: Kraft process chemical with 80–100 kg/ton pulp consumption

2.2 Pharmaceutical Applications

  • Drying agent in organic synthesis (5–10% w/w)
  • Laxative preparations (3–15 g/dose)
  • Protein crystallography (0.8–1.2 M solutions)

2.3 Food & Agriculture

  • FDA-approved dough conditioner (≤0.5% flour weight)
  • Animal feed additive (0.3–0.5% in ruminant diets)

3. Practical Use Cases Across Industries

Case A: Textile Dye Optimization

Challenge: Inconsistent color absorption in polyester fabrics
Solution: 8 g/L sodium sulfate in dye bath at 130°C
Outcome: 22% improvement in color uniformity

Case B: Pharmaceutical Tablet Production

Challenge: Moisture-induced tablet capping
Solution: 7% anhydrous sodium sulfate in granulation
Outcome: Reduced moisture absorption by 40%

4. Verified Customer Success Stories

Client 1: Tianjin Jishengkang Chemical Co., Ltd.

Application: Detergent filler production
Volume: 500 MT/month
Specs: 99.2% purity, 50kg moisture-proof bags
Results: 15% production cost reduction

Client 2: Nanjing Senbeijia Biotech

Application: Protein crystallization research
Grade: AR, 99.5% purity
Outcome: Successful crystallization of 8 novel proteins

5. Request Customized Solutions

For technical specifications or bulk pricing:
Email: info@vivalr.com
Tel: (86) 15866781826

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