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CasNo： 139-33-3
MF： C10H14N2Na2O8
Appearance： White crystalline powder
Delivery Time： one week
Throughput： 1 million|Metric Ton|Year
Purity： 99%
Ethylenediaminetetraacetic acid, widely abbreviated as EDTA, is an aminopolycarboxylic acid and a colourless, water-soluble solid. Its conjugate base is named ethylenediaminetetraacetate. It is widely used to dissolve limescale. Its usefulness arises because of its role as a hexadentate ("six-toothed") ligand and chelating agent, i.e. its ability to "sequester" metal ions such as Ca2+ and Fe3+. After being bound by EDTA, metal ions remain in solution but exhibit diminished reactivity. EDTA is produced as several salts, notably disodium EDTA and calcium disodium EDTA.
|
ITEM |
STANDARD |
|
Appearance |
White crystalline powder |
|
Identification |
Pass test |
|
Assay (C10H14N2Na2O8.2H2O) |
99.0% ~ 101.0% |
|
Chloride (Cl) |
=< 0.01% |
|
Sulphate (SO4) |
=< 0.1% |
|
pH (1%) |
4.0- 5.0 |
|
Nitrilotriacetic acid |
=< 0.1% |
|
Calcium (Ca) |
Negative |
|
Ferrum (Fe) |
=< 10 mg/kg |
|
Lead (Pb) |
=< 5 mg/kg |
|
Arsenic (As) |
=< 3 mg/kg |
|
Mercury (Hg) |
=< 1 mg/kg |
|
Heavy metals (as Pb) |
=< 10 mg/kg |
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