I-EDTA Disodium (EDTA-2Na) | 139-33-3
IiNkcazo zeeMveliso
I-Ethylenediaminetetraacetic acid, efinyeziweyo ngokubanzi njenge-EDTA, yi-aminopolycarboxylic acid kunye ne-colorless, i-soluble water-soluble solid. Isiseko sayo se-conjugate kuthiwa yi-ethylenediaminetetraacetate. Isetyenziswa ngokubanzi ukunyibilikisa i-limescale. Uncedo lwayo luvela ngenxa yendima yayo njenge-hexadentate ("amazinyo amathandathu") i-ligand kunye ne-agent ye-chelating, oko kukuthi amandla ayo "okukhangela" i-ion zetsimbi ezifana ne-Ca2 + kunye ne-Fe3 +. Emva kokubotshwa yi-EDTA, ii-ion zetsimbi zihlala kwisisombululo kodwa zibonisa ukuphinda kusebenze kwakhona. I-EDTA iveliswa njengeetyuwa ezininzi, ngakumbi i-disodium EDTA kunye ne-calcium disodium EDTA.
Inkcazo
| INTO | UMGANGATHO |
| Imbonakalo | Umgubo omhlophe wekristale |
| Ukuchongwa | Luphumelele uvavanyo |
| Isivavanyi (C10H14N2Na2O8.2H2O) | 99.0% ~ 101.0% |
| Ikloridi (Cl) | =< 0.01% |
| Isulphate (SO4) | =< 0.1% |
| pH (1%) | 4.0- 5.0 |
| Nitrilotriacetic acid | =< 0.1% |
| Ikhalsiyam (Ca) | Ibi |
| Ferrum (Fe) | =< 10 mg / kg |
| Khokela (Pb) | =< 5 mg / kg |
| IArsenic (Nje) | =< 3 mg / kg |
| IMercury (Hg) | =< 1 mg/kg |
| Iintsimbi ezinzima (njenge-Pb) | =< 10 mg / kg |
