| Molecular Formula | C10H14N2Na2O8 |
| Molar Mass | 336.21 |
| Density | 1.01 g/mL at 25 °C |
| Melting Point | 248 °C (dec.)(lit.) |
| Boling Point | >100 °C |
| Water Solubility | Miscible with water. |
| Solubility | H2O: clear, colorless |
| Appearance | solution |
| Color | ≤5 (0.5 M)(APHA) |
| BRN | 3822669 |
| Storage Condition | 2-8°C |
| Stability | Hygroscopic |
| Physical and Chemical Properties | 1. EDTA has a wide range of coordination properties, and can form stable chelates with almost all metal ions. The advantages are: it provides the possibility of extensive determination of elements (better than acid-base and precipitation methods). Disadvantages: It is easy to interfere with various components-selectivity 2. The coordination ratio between EDTA and the formed M- EDTA is mostly 1: 13. Most chelates are charged, so they can dissolve in water and react quickly. |
| Use | Disodium ethylenediaminetetraacetate is used as a color photosensitive material washing and processing bleaching fixer, and also as a water purifier, pH regulator, chelating agent, polyvalent chelating agent and coagulant. It is also used in textile printing and dyeing, detergent, metal coating and metallurgical industry. |
| Risk Codes | R36/38 - Irritating to eyes and skin. R36/37/38 - Irritating to eyes, respiratory system and skin. R22 - Harmful if swallowed R34 - Causes burns R21/22 - Harmful in contact with skin and if swallowed. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S37/39 - Wear suitable gloves and eye/face protection S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S36/37 - Wear suitable protective clothing and gloves. |
| WGK Germany | 2 |
| RTECS | AH4410000 |
| TSCA | Yes |
| HS Code | 29224999 |
Maximum allowable use of food additives Maximum allowable residue standard
The Chinese name of the additive allows the use of this kind of additive The Chinese name of the food additive function Maximum allowable amount (g/kg) Maximum allowable residual amount (g/kg)
Disodium ethylenediaminetetraacetate food industry processing aids/generally should be out before the final product, except for specified residues in food
Production method
1. Condensation of sodium chloroacetate with ethylenediamine, acidification to obtain ethylenediamine tetraacetic acid, and then neutralize with sodium hydroxide. Dissolve the obtained crude product in 10 times of water, add an equal volume of ethanol to precipitate disodium salt, and then filter and wash.