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EDTA disodium usawoti (EDTA 2NA), CAS#6381-92-6

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EDTA disodium usawoti (EDTA 2NA), CAS#6381-92-6

Impahla: EDTA 2NA
I-# yeCAS: 6381-92-6
I-Molecular Formula: C10H14N2O8Na2.2H2O
Isisindo se-molecule: 372
Ukusetshenziswa: Isebenza ku-detergent, i-adjuvant yokudaya, i-ejenti yokucubungula imicu, isengezo sezimonyo, isithasiselo sokudla, umanyolo wezolimo njll.

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Imininingwane Yomkhiqizo

Omaka bomkhiqizo

Imininingwane:
Ukubukeka: Impushana emhlophe noma i-crystalline powder emhlophe
Iphunga: Alikho iphunga
I-Chloride(Cl): ≤0.05%
I-Sulfate(SO4): ≤0.05%
Insimbi(Fe): ≤0.001%
Insimbi esindayo(Pb): ≤0.001%

PH: 4-6
Ubumsulwa: ≥99.0%
Indawo yokuncibilika: 252 ℃
Ukunyibilika: kuncibilika emanzini, kuncibilika kancane ku-ethanol, ether.
Ukupakisha: 25KG / isikhwama

Isicelo:
I-EDTA 2NA iyi-ejenti eyinkimbinkimbi ebalulekile yokuhlanganisa ama-ion ensimbi nokuhlukanisa izinsimbi.Lo mkhiqizo usetshenziswa njengesixazululo sokulungisa ukufakwa kwe-bleaching sezinto ezinemibala ekhulayo kanye nokucutshungulwa, kanye nokudaya insizakalo, i-ejenti yokwelashwa kwefayibha, isithako sezimonyo, umuthi, ukudla, ukukhiqizwa kwamakhemikhali ezolimo, i-anticoagulant yegazi, i-ejenti eyinkimbinkimbi, okokuhlanza, ukuqiniswa, irabha yokwenziwa, i-polymerization. umqalisi kanye ne-ejenti yokuhlaziya ubuningi bensimbi esindayo, njll. Kuhlelo lokuqala lokunciphisa ukuncishiswa kwe-SBR polymerization, i-disodium EDTA isetshenziswa njengengxenye ye-ejenti esebenzayo, ikakhulukazi ekuhlanganiseni ama-ion ensimbi nokulawula izinga lokusabela kwe-polymerization.

Inqubo Yokukhiqiza:
1.Yengeza kancane kancane ingxube ye-sodium cyanide ne-formaldehyde kusisombululo esinamanzi se-ethylenediamine ngesilinganiso esithile, futhi udlulise umoya ku-85℃ ngaphansi kwengcindezi encishisiwe yokukhipha igesi ye-ammonia.Ngemuva kokusabela, lungisa inani le-Ph libe ngu-4.5 nge-concentrated sulfuric acid, bese ukhipha umbala, ukuhlunga, ukugxila, ukucwebezela futhi uhlukanise, bese womisa ukuze uthole umkhiqizo oqediwe.

2. Hlanganisa u-100kg we-chloroacetic acid, i-100kg yeqhwa kanye ne-135kg ye-30% yesisombululo se-NaOH, engeza u-18kg we-83% ~ 84% ye-ethylenediamine ngaphansi kokugqugquzela, futhi uyigcine ku-15℃ ihora elingu-1.Kancane kancane engeza isixazululo se-NaOH esingu-30% kumaqoqo kuze kube i-reactant iba ne-alkaline, futhi uyigcine ekamelweni lokushisa u-12h.Shisisa ku-90℃, engeza ikhabhoni ecushiwe ukuze ukhiphe umbala.I-filtrate ilungiswa ku-4.5 Ph nge-hydrochloric acid futhi igxilwe futhi ihlungwe ku-90 ℃;i-filtrate iyapholiswa, ifakwe amakristalu, ihlukaniswe futhi igezwe, futhi yomiswe ku-70 ℃ ukuze kutholwe umkhiqizo oqediwe.

3.Kwenziwe isenzo se-ethylenediaminetetraacetic acid kanye nesisombululo se-sodium hydroxide: Ku-2L ye-reaction flask efakwe i-stirrer, engeza u-292g we-ethylenediaminetetraacetic acid namanzi angu-1.2L.Engeza u-200mL wesisombululo se-sodium hydroxide engu-30% ngaphansi kokunyakaziswa nokushisa kuze kuqedwe konke ukusabela.Engeza u-20% we-hydrochloric acid futhi unciphise ku-pH=4.5, ukushisa ku-90℃ futhi ugxilise, ukuhlunga.I-filtrate ipholisiwe futhi amakristalu ayaqina.Khipha futhi uhlukanise, geza ngamanzi acwecwe, wome ku-70℃, bese uthola umkhiqizo we-EDTA 2NA.

4.Engeza i-ethylenediaminetetraacetic acid kanye namanzi ku-enameled reaction tank, engeza isisombululo se-sodium hydroxide ngaphansi kokugqugquzela, ukushisa kuze kube yilapho konke ukusabela, engeza i-hydrochloric acid ku-pH 4.5, ukushisa ku-90 ° C futhi ugxilise, ukuhlunga, i-filtrate ipholile, hlunga. amakristalu, geza ngamanzi, wome ku-70°C, futhi uthole i-EDTA 2NA.

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