Ethylene glycol-bis(2-aminoethyl ether)-N,N,N',N'-tetraacetic acid (EGTA) CAS 67-42-5
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Product Description
Product Details
Introduction
Ethylene glycol-bis(2-aminoethyl ether)-N,N,N',N'-tetraacetic acid (EGTA) is an aminopolycarboxylic acid chelating agent that can chelate divalent metal ions except Mg2+. Compared with EDTA, EGTA has a weaker affinity for magnesium ions and is therefore more selective for calcium ions. It is soluble in alkaline solutions and almost insoluble in water.
Physical indicators
| Appearance | White crystalline powder |
| Purity | ≥99.0% |
| Melting point | 241-242℃ |
| Boiling point | 507.99°C |
Application
It is used as a metal ion chelating agent and a complexing agent and masking agent for measuring trace metals in volumetric analysis and photometric analysis. It can also be used to titrate barium, strontium, copper, magnesium and zinc. It is used to prepare calcium buffer and control the concentration of calcium ions.
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