Disodium edetate dihydrate CAS：139-33-3
Efficient Chelation Capability： Functions as an efficient chelator by generating steady, water‑soluble complexes with diverse metal ions, thus suppressing unwanted chemical reactions.
Strong Metal Ion Affinity： Shows high binding stability toward metal ions, guaranteeing stable and uniform performance under varied application environments.
Wide Adaptability to Metal Ions： Able to chelate multiple metal ions including iron, copper, calcium and magnesium, making it suitable for use across numerous industrial fields.
Superior Water Solubility： Dissolves quickly and completely in water, enabling simple incorporation into water‑based systems and improving its practicality in industrial and chemical applications.
Disodium ethylenediaminetetraacetate, commonly referred to as disodium EDTA, functions as an extremely effective chelating compound. Featuring a strong stability constant and flexible binding ability, it easily generates steady water-soluble complexes with numerous metal ions, including iron, copper, calcium, magnesium and other multivalent ions. This helps significantly reduce unfavorable reactions and harmful impacts brought about by the presence of metal ions.
Parameters
| Melting point | 250 °C (dec.)(lit.) |
| Boiling point | >100 °C |
| density | 1.01 g/mL at 25 °C |
| bulk density | 700kg/m3 |
| FEMA | 4520 | ETHYLENEDIAMINETETRAACETIC ACID DISODIUM SALT |
| refractive index | n20/D 1.363 |
| Fp | >100℃ |
| storage temp | room temp |
| solubility | 3 M NaOH: 100 mg/mL |
| form | crystalline |
| pka | pK1:1.99;pK2:2.67;pK3:6.16;pK4:10.26 (25°C) |
| color | ≤5 (0.5 M)(APHA) |
| PH | 4.0-5.5 (25℃, 0.1M in H2O) |
| Odor | Odorless |
| PH Range | 4 - 5 at 10 g/l at 23 °C |
| biological source | synthetic (organic) |
| Water Solubility | soluble |
| λmax | λ: 260 nm Amax: 0.145 |
| λ: 280 nm Amax: 0.025 | |
| BRN | 3900609 |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| InChIKey | QCDUWWPHAVXXQS-UHFFFAOYSA-L |
| CAS DataBase Reference | 6381-92-6(CAS DataBase Reference) |
| EPA Substance Registry System | Ethylenediaminetetraacetic acid disodium salt dihydrate (6381-92-6) |
Safety Information
| Hazard Codes | Xi,Xn |
| Risk Statements | 36-52/53-36/38-36/37/38-22 |
| Safety Statements | 26-61-37/39-36/37/39-36 |
| WGK Germany | 2 |
| RTECS | AH4025000 |
| F | 3 |
| TSCA | Yes |
| HS Code | 29224995 |
| Toxicity | LD50 orally in Rabbit: > 2000 mg/kg |
