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Its chemical formula is C10H12N2O8Na4, and its commercially available products are generally sold in the form of hydrate (such as Na4EDTA.4H2O).
It can provide the chelating ion EDTA4-, which has a pH of about 11.3 in 1% aqueous solution.
When it is dissolved in neutral water, it will partially hydrolyze to form dihydrogen anion H2EDTA2-, which is soluble in water and acid but insoluble in alcohol, benzene and trichloromethane.
Applications
1. Soap: Add EDTA 4NA powder to curd soaps, soaps, and shaving soaps to prevent discoloration and rancor. EDTA 4NA powder was added to the soap at a concentration of 0.1-0.2%.
2. Electroplating:can be incorporated into all types of alkaline degreaser to stabilize polyphosphate and prevent lime soap from flocculating. This extends the work of the degreasing tank life. EDTA 4NA powder can also be used in neutral and alkaline derusting and descaling baths.
3. Rubber: ferrous ions can be used in the catalyst.
Packaging
25kg kraft paper bag
1000KGS big bag
Can be customized according to requirements
Technical specification
| Item | Ethylenediaminetetraacetic acid tetrasodium salt | ||
|---|---|---|---|
| CAS No. | Formula | Molecule Weight | Shelf Life |
| 13235-36-4 | C10H12N2O8Na4·4H2O | 452.2 g/mol | 12 months |
| Specifications | Unit | Lower Limit | Upper Limit |
|---|---|---|---|
| Grade | Industrial grade | ||
| Appearance | White crystal powder | ||
| Assay (as 452.2) | % | 99 | |
| pH (10g/L 25℃) | 10.5 | 11.5 | |
| Chloride | % | 0.01 | |
| Sulfate | % | 0.05 | |
| Metal chelate (Pb) | % | 0.001 | |
| Iron | % | 0.001 | |
| Chelate | mgCaCO3/g | 215 | |
| NTA | % | 1 | |
| Specifications | Unit | Lower Limit | Upper Limit |
|---|---|---|---|
| Grade | Cosmetic grade | ||
| Appearance | White crystal powder | ||
| Assay (as 452.2) | % | 99 | |
| pH (10g/L 25℃) | 10.5 | 11.5 | |
| Chloride | % | 0.01 | |
| Sulfate | % | 0.05 | |
| Metal chelate (Pb) | % | 0.001 | |
| Iron | % | 0.001 | |
| Chelate | mgCaCO3/g | 215 | |
| NTA | % | 0.1 | |
In addition to the above commonly used specifications, we can also provide:
EDTA-4Na 2H2O
EDTA-4Na 40% solution
| Product | EDTA-4Na·2H2O | |||
|---|---|---|---|---|
| HS Code | CAS No. | Formula | Molecule Weight | Shelf Life |
| 2922499990 | 13235-36-4 | C10H12N2O8Na4·2H2O | 452.2 g/mol | 12 months |
| Items | Unit | Lower Limit | Upper Limit | |
| Appearance | White crystal powder | |||
| Assay (as 452.2.2) | % | 107 | 109 | |
| pH (1% solution) | 10.5 | 11.5 | ||
| Chloride | % | 0.01 | ||
| Metal chelate (Pb) | % | 0.001 | ||
| Iron | % | 0.001 | ||
| Chelating value | mgCaCO3/g | 236 | ||
| Product | EDTA-4Na 40% solution | |||
|---|---|---|---|---|
| HS Code | CAS No. | Formula | Molecule Weight | Shelf Life |
| 2922499990 | 23415 | C10H12N2O8Na4 | 380.17 g/mol | 12 months |
| Items | Unit | Lower Limit | Upper Limit | |
| Appearance | Light yellow and amber liquid | |||
| Content (as 380.2) | % | 40 | ||
| Chloride (Cl) | % | 0.01 | ||
| Sulphate (SO4) | % | 0.05 | ||
| Metal chelate(Pb) | % | 0.001 | ||
| Iron | % | 0.001 | ||
| pH value (10g/L, 25℃) | 11 | 12 | ||
| Chelate Value | mgCaCO3/g | 102 | 110 | |
| NTA | % | 2 | ||
| Chroma | Hazen | 200 | ||
| Specific gravity 25/25℃ | g/ml | 1.26 | 1.35 | |
| Packing: | 250KG/drum or 1250kgs IBC. | |||
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Published reference specifications. Confirm the current grade, SDS / TDS / COA, packaging and delivery terms with your quotation.