Ethylenediaminetetraacetic acid disodium salt, also known as EDTA-2Na, is a good complexing agent in chemistry. The chemical formula is C10H14N2Na2O8, with a molecular weight of 336.206. It has six coordinating atoms and forms a complex called a chelate. EDTA is often used in coordination titration to determine the content of metal ions. EDTA has important applications in industries such as dyes, food, and pharmaceuticals.
Ethylenediaminetetraacetic acid disodium is an odorless or slightly salty white or milky white crystalline or granular powder, odorless and tasteless. It can dissolve in water but is extremely difficult to dissolve in ethanol. It is an important chelating agent that can chelate metal ions in solution. Preventing discoloration, deterioration, turbidity caused by metals and oxidative loss of vitamin C can also enhance the antioxidant properties of oils (trace metals such as iron and copper in oils promote oil oxidation).
ITEMS OF TEST |
UNIT |
SPECIFICATION |
PURITY |
% |
≥99.0 |
CHLORIDE |
% |
≤0.01 |
PH |
|
4.5-5 |
SULPHATE(SO4) |
% |
≤0.02 |
Fe |
% |
≤0.001 |
CHELATE VALUE |
mg/g |
≥265 |