Ethylenediaminetetraacetic acid tetrasodium salt, also known as EDTA4na, is an organic compound with the molecular formula C10H12N2Na4O8 and a molecular weight of 380.17.
It is a white powder. Easy to dissolve in water.
Used as a hard water softener, multivalent chelating agent, fixing solution for bleaching and rinsing in color photosensitive materials, and activator for styrene butadiene rubber.
TESTS | STANDARD | RESULTS |
APPEARANCE | WHITE CRYSTALLINE POWDER | |
CONTENT | 99%MIN | 99.5% |
PH(1% SOLUTION) | 10.5-11.5 | 11.03 |
CHELATE VALUE ( mg CaCO3/g) | 215 MIN | 221 |
CHLORIDE | 0.01% MAX | 0.003% |
Fe | 0.001% MAX | 0.0001% |
HEAVY METAL ( Pb) | 0.001% MAX | NIL |