Ethylene Diamine Tetraacetic Acid Disodium (EDTA Na2)
Thepa: Ethylene Diamine Tetraacetic Acid Disodium (EDTA Na2)
CAS#: 6381-92-6
Foromo: C10H14N2O8Na2.2H2O
Boima ba limolek'hule: 372
Mokgwa wa ho Nahana wa Meralo:
Tšebeliso: E sebetsa ho sesepa sa ho hlatsoa, sesebelisoa sa ho daea, sesebelisoa sa ho sebetsana le likhoele, setlolo sa litlolo, setlolo sa lijo, manyolo a temo jj.
Litlhaloso:
| Ntho | E tloaelehileng |
| Ponahalo | Phofo e Tšoeu |
| Teko (C)10H14N2O8Na2.2H2O) | ≥99.0% |
| Plumbum(Pb) | ≤0.0005% |
| Ferrum (Fe) | ≤0.001% |
| Chloride (Cl) | ≤0.05% |
| Sulfate (SO3)4) | ≤0.05% |
| PH(50g/L; 25℃) | 4.0-6.0 |
| Boholo ba Likaroloana | 40mesh≥98.0% |
Kopo:
EDTA 2NA ke sesebelisoa sa bohlokoa sa ho kopanya li-ion tsa tšepe le ho arola litšepe. Sehlahisoa sena se sebelisoa e le tharollo ea ho soeufatsa bakeng sa ho nts'etsapele le ho sebetsana le thepa ea litšoantšo tsa 'mala, le thuso ea ho daea, sesebelisoa sa kalafo ea faeba, setlatsetso sa botle, meriana, lijo, tlhahiso ea microfertilizer ea lik'hemik'hale tsa temo, anticoagulant ea mali, sesebelisoa sa ho kopanya, sesepa sa ho hloekisa, stabilizer, rabara ea maiketsetso, se qalang polymerization le sesebelisoa sa tlhahlobo ea bongata ba tšepe e boima, jj. Tsamaisong ea ho qala phokotso ea chlorine bakeng sa polymerization ea SBR, disodium EDTA e sebelisoa e le karolo ea sesebelisoa se sebetsang, haholo-holo bakeng sa ho kopanya li-ion tsa tšepe le ho laola sekhahla sa karabelo ea polymerization.
Tshebetso ea Tlhahiso:
1. Kenya butle-butle motsoako oa sodium cyanide le formaldehyde tharollong ea metsi ea ethylenediamine ka tekanyo e itseng, 'me u fetise moea ho 85℃ tlas'a khatello e fokotsehileng ho tlosa khase ea ammonia. Kamora karabelo, fetola boleng ba Ph ho 4.5 ka sulfuric acid e kopaneng, ebe u tlosa 'mala, u sefa, u tsepamisa maikutlo, u kristale 'me u arole, 'me u omelle ho fumana sehlahisoa se felileng.
2. Kopanya 100kg ea chloroacetic acid, 100kg ea leqhoa le 135kg ea tharollo ea 30% ea NaOH, eketsa 18kg ea 83% ~ 84% ea ethylenediamine tlas'a ho hlohlelletsa, 'me u e boloke ho 15℃ ka hora e le 1. Kenya butle-butle tharollo ea 30% ea NaOH ka lihlopha ho fihlela reactant e fetoha alkaline, 'me u e boloke mochesong oa kamore lihora tse 12. Chesa ho fihlela ho 90℃, eketsa khabone e sebetsang ho tlosa 'mala. Filtrate e fetoloa ho 4.5 Ph ka hydrochloric acid 'me e teteane le ho sefshoa ho 90℃; filtrate ea pholisoa, ea kristaletsoa, ea aroloa le ho hlatsuoa, 'me ea omisoa ho 70℃ ho fumana sehlahisoa se felileng.
3. E entsoe ka ketso ea tharollo ea ethylenediaminetetraacetic acid le sodium hydroxide: Ka har'a flask ea karabelo ea 2L e nang le stirrer, eketsa 292g ea ethylenediaminetetraacetic acid le metsi a 1.2L. Kenya 200mL ea tharollo ea 30% ea sodium hydroxide tlas'a ho hlohlelletsa le ho futhumatsa ho fihlela karabelo eohle e felile. Kenya 20% ea hydrochloric acid 'me u e nolofatse ho pH=4.5, u e futhumatse ho fihlela ho 90℃ 'me u e tsepamise, u e sefe. Filtrate ea pholisoa 'me likristale lia koaheloa. Ntša 'me u arole, hlatsoa ka metsi a hloekisitsoeng, u omelle ho 70℃, 'me u fumane sehlahisoa sa EDTA 2NA.
4. Kenya ethylenediaminetetraacetic acid le metsi ka tankeng ea karabelo e nang le enamel, eketsa tharollo ea sodium hydroxide tlas'a ho hlohlelletsa, futhumatsa ho fihlela karabelo eohle e felile, eketsa hydrochloric acid ho pH 4.5, futhumatsa ho fihlela ho 90°C 'me u tsepamise maikutlo, sefa, sefa e pholisitsoe, sefa likristale, hlatsoa ka metsi, o omise ho 70°C, 'me u fumane EDTA 2NA.
