EDTA Tetrasodium Dihydrate (EDTA-4NA•2H2O) Comprehensive Guide
Table of Contents
1. Product Overview & Specifications
CAS No.: 13254-36-4 / 10378-23-1
Molecular Formula: C10H12N2O8Na4·2H2O
Appearance: White crystalline powder
Solubility: ≥100g/100ml in water (20°C)
pH Range: 10.5-11.5 (1% aqueous solution)
| Parameter | EDTA-4Na•2H2O | EDTA Disodium | EDTA Calcium Disodium |
|---|---|---|---|
| Chelation Capacity | High (Ca²+/Mg²+) | Moderate | Selective (Pb²+) |
| pH Stability | 8-12 | 4-6 | Neutral |
2. Key Applications & Industry Uses
Core Functions:
- Metal ion sequestration in cleaning products
- Scale inhibition in industrial water systems
- Stabilizer in cosmetic formulations
Industry-Specific Applications:
- Detergent Manufacturing: Prevents metal-induced fabric discoloration
- Textile Processing: Improves dye fixation rates by 15-20%
- Boiler Systems: Reduces calcium carbonate scale formation
3. Technical Parameter Comparison
| Grade | Industrial | Food | Pharma |
|---|---|---|---|
| Purity | ≥98% | ≥99.5% | ≥99.9% |
| Heavy Metals | <10ppm | <2ppm | <1ppm |
4. Usage Scenarios & Best Practices
Optimal Dosage Guidelines:
- Detergents: 0.5-1.2% by weight
- Cooling Towers: 50-200ppm continuous feed
Compatibility Notes:
- Avoid strong oxidizing agents
- Synergistic with polyphosphates
5. Client Case Studies
Case 1: European Detergent Manufacturer
- Challenge: Mineral deposits reducing washing efficiency
- Solution: 0.8% EDTA-4Na formulation
- Result: 22% improvement in stain removal
Case 2: Asian Textile Plant
- Challenge: Inconsistent dye uptake
- Solution: 1.5g/L in pre-treatment bath
- Result: 18% reduction in dye waste
6. Inquiry & Custom Solutions
Contact our technical team for formulation support:
Email: info@vivalr.com
Tel: (86) 15866781826
Why Choose Us:
- ISO-certified production
- Bulk quantities up to 25MT/month
- Custom particle size distributions
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