EDTA Disodium Dihydrate (EDTA-2NA) CAS 6381-92-6/139-33-3: Comprehensive User Guide
Table of Contents
1. Product Overview & Specifications
Chemical Profile
EDTA-2NA (C10H14N2Na2O8·2H2O) is a water-soluble chelating agent with dual CAS registrations: 6381-92-6 (dihydrate form) and 139-33-3 (anhydrous basis).
Technical Specifications
| Parameter | EDTA-2NA | EDTA Tetrasodium | Citric Acid |
|---|---|---|---|
| Chelating Strength (mg CaCO3/g) | 110-120 | 90-100 | 25-30 |
| pH Stability Range | 4.0-12.0 | 8.0-12.0 | 2.0-6.0 |
2. Key Applications & Industrial Uses
Core Functional Benefits
- Metal Ion Sequestration: Binds Ca2+, Mg2+, Fe3+ at 1:1 molar ratio
- Stabilization Efficiency: 98%+ oxidation prevention in cosmetic emulsions
- Scale Inhibition: 75% reduction in boiler scaling at 0.1-0.5% concentration
3. Step-by-Step Usage Guidelines
Optimal Dosage Matrix
| Application | Concentration Range | Temperature Limit |
|---|---|---|
| Food Preservation | 0.01-0.1% w/w | 80°C |
| Pharmaceuticals | 0.05-0.3% w/v | 121°C (autoclave) |
4. Practical Implementation Cases
Case Study A: Textile Processing
A dyehouse achieved 40% reduction in metal-induced color distortion using 0.2% EDTA-2NA in pre-treatment baths, maintaining pH 5.5-6.5 throughout processing cycles.
5. Verified Customer Success Stories
Client 1: AquaPure Water Solutions
“Implementing EDTA-2NA at 150 ppm in our RO systems decreased membrane fouling frequency from weekly to quarterly maintenance cycles, saving $28k/year in operational costs.”
Client 2: VitaPharm Laboratories
“0.15% EDTA-2NA in our antibiotic formulations increased shelf-life stability from 18 to 36 months while meeting strict USP <61> microbial standards.”
6. Request Customized Solutions
Contact our technical team for formulation optimization:
Email: info@vivalr.com
Phone: (86) 15866781826
Request SDS documentation or schedule a virtual lab demonstration.
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