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Disodium ethylenediaminetetraacetate (CAS 139-33-3) is a highly water-soluble chelating agent with distinct chemical traits. As a sodium salt of ethylenediaminetetraacetic acid, it exhibits strong affinity for various metal ions, forming stable complexes with divalent and trivalent cations like calcium, magnesium, and iron. This compound maintains good stability under normal temperature and pressure conditions, though it may undergo hydrolysis in extremely acidic or alkaline environments. Additionally, its solubility in water is significantly higher compared to the parent ethylenediaminetetraacetic acid (EDTA), making it more versatile for use in aqueous solutions across industrial, medical, and laboratory applications.
| Melting point | 248 °C (dec.)(lit.) |
| Boiling point | >100 °C |
| density | 1.01 g/mL at 25 °C |
| vapor pressure | 0Pa at 25℃ |
| refractive index | n20/D 1.363 |
| storage temp. | 2-8°C |
| solubility | H2O: clear, colorless |
| form | solution |
| color | ≤5 (0.5 M)(APHA) |
| PH | 8.0±0.2 |
| Odor | at 100.00?%. odorless |
| Water Solubility | Miscible with water. |
| BRN | 3822669 |
| Stability: | Hygroscopic |
| LogP | -4.3 at 25℃ |
| CAS DataBase Reference | 139-33-3(CAS DataBase Reference) |
| EPA Substance Registry System | Ethylenediaminetetraacetic acid disodium salt (139-33-3) |
| Absorption | cut-off at 268nm |
Stabilizer: EDTA Disodium Cas 139-33-3 can complex metal ions in cosmetics to prevent metal ions from catalyzing reactions such as oil oxidation and fragrance deterioration, improve the stability and shelf life of cosmetics, and prevent cosmetics from discoloration, taste change, stratification, etc.
Synergizer: EDTA Disodium Cas 139-33-3 synergizes with other ingredients in cosmetics to enhance the efficacy of cosmetics. For example, combined with sunscreen, it can improve the absorption effect of sunscreen on ultraviolet rays.
Softening hard water: EDTA Disodium Cas 139-33-3 can complex with calcium and magnesium ions in water, remove these ions that cause water hardness to increase or reduce their concentration, soften hard water, reduce scale deposition in pipes and equipment, improve water quality, and extend equipment life.
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