Umunyu wa EDTA disodium (EDTA 2NA), CAS # 6381-92-6
Ibicuruzwa: EDTA 2NA
URUBANZA #: 6381-92-6
Inzira ya molekulari: C.10H14N2O8Na2.2H2O
Uburemere bwa molekile: 372
Imikoreshereze: Bikoreshwa muburyo bwo kwisiga, gusiga irangi, gutunganya ibintu bya fibre, kosmeti yongeyeho, kongeramo ibiryo, ifumbire mvaruganda nibindi.
Ibisobanuro:
Kugaragara: Ifu yera cyangwa ifu yera ya kristaline
Impumuro: Nta mpumuro nziza
Chloride (Cl): ≤0.05%
Sulfate (SO4): ≤0.05%
Icyuma (Fe): ≤0.001%
Icyuma kiremereye (Pb): ≤0.001%
PH: 4-6
Isuku: ≥99.0%
Ingingo yo gushonga: 252 ℃
Gukemura: gushonga mumazi, gushonga gato muri Ethanol, ether.
Gupakira: 25KG / igikapu
Gusaba ：
EDTA 2NA nigikorwa cyingenzi cyo guhuza ibyuma bya ion no gutandukanya ibyuma.Iki gicuruzwa gikoreshwa nkigisubizo cyo gukosora ibikoresho bifotora byamabara biteza imbere no kubitunganya, hamwe no gusiga amarangi afasha, kuvura fibre, kosmetike yongeweho, imiti, ibiryo, imiti yubuhinzi bwa microfertilizer yubuhinzi, anticagulant yamaraso, imiti igoye, detergent, stabilisateur, reberi yubukorikori, polymerisation uwatangije nicyuma kiremereye cyo gusesengura ibintu, nibindi. Muri sisitemu yo gutangiza chlorine yo kugabanya SBR polymerisation, disodium EDTA ikoreshwa nkigice cyibikorwa bikora, cyane cyane muguhuza ioni no kugenzura igipimo cya reaction ya polymerisation.
Uburyo bwo kubyaza umusaruro:
1.Byongereho buhoro buhoro imvange ya sodium cyanide na formaldehyde kumuti wamazi wa Ethylenediamine mukigereranyo runaka, hanyuma unyure umwuka kuri 85 ℃ munsi yumuvuduko ukabije wo gukuramo gaze ya amoniya.Nyuma yo kubyitwaramo, hindura agaciro ka Ph kuri 4.5 hamwe na acide sulfurike yibanze, hanyuma uhindure amabara, uyungurure, ushire hamwe, utondekanye kandi utandukanye, hanyuma wumuke kugirango ubone ibicuruzwa byarangiye.
2.Vanga 100kg ya acide ya chloroacetike, 100kg ya barafu na 135kg ya 30% yumuti wa NaOH, ongeramo 18kg ya 83% ~ 84% Ethylenediamine munsi ya stir, hanyuma ubigumane kuri 15 ℃ kuri 1h.Buhoro buhoro ongeramo 30% igisubizo cya NaOH mubice kugeza reaction ihinduka alkaline, hanyuma uyigumane mubushyuhe bwicyumba cya 12h.Shyushya kuri 90 ℃, ongeramo karubone ikora kugirango decolorize.Akayunguruzo kahinduwe kuri 4.5 Ph hamwe na aside ya hydrochlorike hanyuma igashyirwa hamwe ikayungurura kuri 90 ℃;akayunguruzo karakonje, koroherezwa, gutandukana no gukaraba, no gukama kuri 70 ℃ kugirango ubone ibicuruzwa byarangiye.
3.Byakozwe nigikorwa cya acide ya Ethylenediaminetetraacetic hamwe na hydroxide ya sodium hydroxide: Muri flask ya 2L reaction ifite ibikoresho bya stirrer, ongeramo 292g Ethylenediaminetetraacetic aside na 1.2L amazi.Ongeramo 200mL ya 30% sodium hydroxide yumuti munsi yo gukurura no gushyushya kugeza ibisubizo byose birangiye.Ongeramo aside hydrochloric 20% hanyuma uhindure kuri pH = 4.5, ubushyuhe kuri 90 ℃ hanyuma ushire hamwe, uyungurure.Akayunguruzo karakonje kandi kristu iragwa.Gukuramo no gutandukanya, koza n'amazi yatoboye, kuma kuri 70 ℃, hanyuma ubone ibicuruzwa EDTA 2NA.
4. Ongeraho aside ya Ethylenediaminetetraacetic n'amazi mukigega cya reaction ya emamed, ongeramo hydroxide ya sodium hydrocide munsi ya stir, ubushyuhe kugeza reaction zose, ongeramo aside hydrochloric kuri pH 4.5, ubushyuhe kuri 90 ° C hanyuma ushire hamwe, kuyungurura, kuyungurura birakonje, kuyungurura kristu, kwoza n'amazi, kuma kuri 70 ° C, hanyuma ubone EDTA 2NA.
