Sodium Chromate (CAS 7775-11-3) Comprehensive Product Guide
Table of Contents
- 1. Product Specifications & Comparative Analysis
- 2. Industrial Applications
- 3. Operational Guidelines
- 4. Implementation Case Studies
- 5. Client Success Stories
- 6. Professional Consultation
1. Product Specifications & Comparative Analysis
| Parameter | Sodium Chromate | Potassium Chromate | Calcium Chromate |
|---|---|---|---|
| CAS Number | 7775-11-3 | 7789-00-6 | 13765-19-0 |
| Molecular Formula | CrNa2O4 | CrK2O4 | CrCaO4 |
| Molecular Weight | 161.97 g/mol | 194.19 g/mol | 156.07 g/mol |
| Appearance | Yellow crystalline powder | Lemon-yellow crystals | Bright yellow powder |
| Water Solubility (20°C) | 530 g/L | 630 g/L | 12.5 g/L |
| Melting Point | 792°C | 975°C | 280°C (decomposes) |
2. Industrial Applications
Primary Industrial Uses
- Corrosion Inhibition: 95% effectiveness in cooling water systems when combined with polyacrylamide
- Pigment Production: Key component in chrome yellow pigments (C.I. Pigment Yellow 34)
- Leather Tanning: Chromium III conversion for hide processing
- Metal Treatment: Aluminum anodizing and zinc coating processes
- Chemical Synthesis: Precursor for chromium oxide catalysts
3. Operational Guidelines
Safety Protocols
| Exposure Route | Emergency Response |
|---|---|
| Inhalation | Immediate evacuation, administer oxygen therapy |
| Dermal Contact | 15-minute flush with pH-neutral detergent solution |
| Ocular Exposure | 30-minute irrigation with buffered saline solution |
| Ingestion | Activated charcoal (1g/kg body weight) + gastric lavage |
Storage Requirements
- Maintain relative humidity below 45%
- Store in HDPE containers with nitrogen blanket
- Segregate from organic compounds and reducing agents
4. Implementation Case Studies
Cooling Tower Optimization
Challenge: 40% corrosion rate in carbon steel pipelines
Solution: 250ppm sodium chromate + 15ppm zinc sulfate
Result: 92% corrosion reduction, extended equipment lifespan by 3.2 years
Pigment Manufacturing
Process: Chromate conversion coating on aluminum substrates
Outcome: 15% improvement in coating adhesion strength
5. Client Success Stories
Case 1: European Chemical Conglomerate
- Industry: Industrial Catalyst Production
- Application: Chromium oxide catalyst synthesis
- Volume: 12MT/month continuous supply
- Achievement: 18% yield improvement in ethylene polymerization
Case 2: Asian Metal Finishing Group
- Specialization: Automotive component coating
- Technical: Zinc-chromate passivation process
- Quality: 99.8% salt spray test compliance (ASTM B117)
- Output: 8 million components/year processed
6. Professional Consultation
Contact our chemical engineering specialists for:
– Custom formulation development
– Regulatory compliance guidance
– Bulk supply chain solutions
Direct Access:
Email: info@vivalr.com
Phone: (86) 15866781826
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