EDTA Disodium (EDTA-2Na) | 139-33-3
Nkọwa ngwaahịa
Ethylenediaminetetraacetic acid, nke anakọtara n'ọtụtụ ebe dị ka EDTA, bụ aminopolycarboxylic acid na enweghị agba, mmiri siri ike. A na-akpọ ntọala conjugate ya ethylenediaminetetraacetate. A na-ejikarị ya agbaze limescale. Ọ bara uru na-ebilite n'ihi ọrụ ya dị ka hexadentate ("eze isii") ligand na onye na-ahụ maka chelating, ya bụ ikike ya "sequester" metal ion dị ka Ca2+ na Fe3+. Mgbe ejiri EDTA kechie ya, ion metal na-anọgide na ngwọta mana ọ na-egosipụta mmeghachi omume na-ebelata. A na-emepụta EDTA dị ka ọtụtụ nnu, karịsịa disodium EDTA na calcium disodium EDTA.
Nkọwapụta
ITEM | Ọkọlọtọ |
Ọdịdị | White crystalline ntụ ntụ |
njirimara | Gafere ule |
Nyocha (C10H14N2Na2O8.2H2O) | 99.0% ~ 101.0% |
Chloride (Cl) | = <0.01% |
Sulfate (SO4) | = <0.1% |
pH (1%) | 4.0-5.0 |
Nitrilotriacetic acid | = <0.1% |
Calcium (Ca) | Ihe ọjọọ |
Ferrum (Fe) | = <10 mg/kg |
Ndu (Pb) | = <5 mg/kg |
Arsenic (dị ka) | = <3 mg/kg |
Mercury (Hg) | = <1 mg/kg |
Ọla dị arọ (dị ka Pb) | = <10 mg/kg |