N-(2-Hydroxyethyl)ethylenediaminetriacetic acid
Synonym(s):N-Carboxymethyl-N′-(2-hydroxyethyl)-N,N′-ethylenediglycine;HEDTA;HEEDTA
- CAS NO.：150-39-0
- Empirical Formula: C10H18N2O7
- Molecular Weight: 278.26
- MDL number: MFCD00004294
- EINECS: 205-759-3
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-08-21 22:41:43
What is N-(2-Hydroxyethyl)ethylenediaminetriacetic acid?
Chemical properties
Crystalline
The Uses of N-(2-Hydroxyethyl)ethylenediaminetriacetic acid
N-(2-Hydroxyethyl)ethylenediaminetriacetic acid is a chelating agent.
The Uses of N-(2-Hydroxyethyl)ethylenediaminetriacetic acid
Chelating compound.
Purification Methods
Crystallise HEDTA from warm H2O, after filtering, by addition of 95% EtOH and allowing to cool. The crystals, collected on a sintered-glass funnel, are washed three times with cold absolute EtOH, then again crystallised from H2O. After leaching with cold H2O, the crystals are dried at 100o under vacuum. [Spedding et al. J Am Chem Soc 78 34 1956, Beilstein 4 IV 2449.]
Properties of N-(2-Hydroxyethyl)ethylenediaminetriacetic acid
| Melting point: | 212 °C (dec.)(lit.) |
| Boiling point: | 421.08°C (rough estimate) |
| Density | 1.3300 (rough estimate) |
| vapor pressure | 0.01Pa at 20℃ |
| refractive index | 1.4550 (estimate) |
| storage temp. | Inert atmosphere,Room Temperature |
| solubility | 3 M NaOH: 0.1 M, clear, colorless |
| form | powder to crystal |
| pka | pK1:2.39;pK2:5.37;pK3:9.93 (25°C) |
| color | White to Almost white |
| Water Solubility | soluble |
| BRN | 1804795 |
| CAS DataBase Reference | 150-39-0(CAS DataBase Reference) |
| EPA Substance Registry System | (2-Hydroxyethyl)ethylenediaminetriacetic acid (150-39-0) |
Safety information for N-(2-Hydroxyethyl)ethylenediaminetriacetic acid
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for N-(2-Hydroxyethyl)ethylenediaminetriacetic acid
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