EDTA Disodium (EDTA-2Na) | 139-33-3
Tuairisgeul air bathar
Tha searbhag ethylenediaminetetraacetic, air a ghiorrachadh gu farsaing mar EDTA, na searbhag aminopolycarboxylic agus solid gun dath, soluiteach ann an uisge. Tha a bhunait conjugate air ainmeachadh mar ethylenediaminetetraacetate. Tha e air a chleachdadh gu farsaing airson limescale a sgaoileadh. Tha e feumail mar thoradh air an àite a th’ aige mar ligand hexadentate (“sia-fiaclan”) agus àidseant chelating, ie a chomas air ionsan meatailt “sequester” leithid Ca2+ agus Fe3+. Às deidh dhaibh a bhith air an ceangal le EDTA, bidh ions meatailt fhathast ann am fuasgladh ach tha iad a’ nochdadh reactivity lùghdaichte. Tha EDTA air a thoirt a-mach mar ghrunn shalainn, gu sònraichte disodium EDTA agus calcium disodium EDTA.
Sònrachadh
| EILE | GNIOMHARA |
| Coltas | Pùdar geal criostalach |
| Aithneachadh | Pas deuchainn |
| Assay (C10H14N2Na2O8.2H2O) | 99.0% ~ 101.0% |
| Chloride (Cl) | =< 0.01% |
| Sulphate (SO4) | =< 0.1% |
| pH (1%) | 4.0- 5.0 |
| Aigéad nitrilotriacetic | =< 0.1% |
| Calcium (Ca) | àicheil |
| Ferum (Fe) | = <10 mg/kg |
| Luaidhe (Pb) | = <5 mg/kg |
| Arsainic (As) | = <3 mg/kg |
| Mearcair (Hg) | = <1 mg/kg |
| Meatailtean trom (mar Pb) | = <10 mg/kg |
