Glda-4Na (CAS 51981-21-6) Comprehensive User Guide
Table of Contents
1. Product Overview & Specifications
Glda-4Na (Tetrasodium Glutamate Diacetate), CAS 51981-21-6, is a high-efficiency biodegradable chelating agent with superior metal ion sequestration capacity.
| Parameter | Specification |
|---|---|
| Chemical Name | Tetrasodium Glutamate Diacetate |
| CAS Number | 51981-21-6 |
| Molecular Formula | C9H9NNa4O8 |
| Molecular Weight | 351.13 g/mol |
| Appearance | White crystalline powder |
| Solubility | ≥500 g/L in water (20°C) |
| pH (1% solution) | 10.5-12.0 |
| Biodegradability | >90% in 28 days (OECD 301B) |
Comparative Analysis
| Property | Glda-4Na | EDTA | NTA |
|---|---|---|---|
| Biodegradability | Excellent | Poor | Moderate |
| CaCO3 Chelation (mg/g) | 450 | 380 | 320 |
| pH Stability Range | 3-12 | 2-12 | 4-10 |
| Ecotoxicity | Low | High | Moderate |
2. Key Applications & Industrial Uses
2.1 Water Treatment Systems
- Scale inhibition in cooling towers (effective up to 80°C)
- Heavy metal removal in wastewater (Pb²⁺, Cu²⁺, Zn²⁺)
2.2 Detergent Formulations
- Enhance surfactant efficiency by 15-20%
- Prevent soap scum formation in hard water (>400 ppm CaCO3)
2.3 Agricultural Solutions
- Microelement fertilizer stabilizer (Fe, Mn, Zn)
- Pesticide compatibility enhancer
3. Performance Comparison With Alternatives
| Application | Glda-4Na Dosage | EDTA Equivalent | Cost Efficiency |
|---|---|---|---|
| Textile Dyeing | 0.8-1.2% owf | 1.5-2.0% owf | 25-40% saving |
| Pulp Bleaching | 0.5 kg/ton | 0.9 kg/ton | 44% saving |
4. Operational Best Practices
4.1 Storage Guidelines
- Store in original packaging at 15-30°C
- Maximum shelf life: 24 months in dry conditions
4.2 Handling Precautions
- Use PPE including goggles and nitrile gloves
- NEVER mix with strong oxidizers
5. Real-World Case Studies
Case 1: Municipal Water Treatment Plant
| Parameter | Detail |
|---|---|
| Client | AquaSolve Utilities, Germany |
| Challenge | Scale buildup reducing heat transfer efficiency by 40% |
| Solution | 0.8% Glda-4Na in cooling system |
| Result | • 78% scale reduction • €120,000/year energy saving |
Case 2: Eco-Friendly Detergent Manufacturer
| Parameter | Detail |
|---|---|
| Client | GreenClean Co., USA |
| Challenge | Phosphate-free formula performance drop |
| Solution | 1.2% Glda-4Na in premium line |
| Result | • 22% better stain removal • USDA Certified Biobased 95% |
6. Technical Support & Inquiry
Contact our chelation experts for application-specific guidance:
- Email: info@vivalr.com
- Phone: (86) 15866781826
Request free technical consultation or sample testing:
| Service | Response Time | Notes |
|---|---|---|
| Technical Query | <24hrs | Include pH, temperature, ion concentration |
| Sample Request | 3-5 business days | 500g trial size available |
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