Asiti ea Ethylenediaminetetraacetic CAS: 60-00-4
Selelekela sa sehlahisoa
Asiti ea Ethylenediaminetetraacetic CAS: 60-00-4
thepa ea lik'hemik'hale
Sehlahisoa sena se qhibilihisa metsi e le phofo e tšoeu. Ho qhibiliha ha metsi ka mocheso oa 25℃ ke 0.5g/L. Ha e qhibilihe metsing a batang, joala le metsoako e akaretsang ea lintho tse phelang. E qhibiliha ka har'a sodium hydroxide, sodium carbonate le litharollo tsa ammonia.
Mokhoa oa tlhahiso:
Karabelo ea ethylenediamine le chloroacetic acid. Kenya 100kg ea chloroacetic acid, 100kg ea leqhoa le 135kg ea tharollo ea sodium hydroxide (30%) ka ketleleng ea karabelo, ebe u eketsa 18kg ea 83% ho isa ho 84% ea ethylenediamine tlas'a ho hlohlelletsa. E futhumale ho 15°C ka hora e le 'ngoe. Kenya tharollo ea 30Chemicalbook% sodium hydroxide ka lihlopha tsa 10L nako le nako. Kamora ho eketsa ka 'ngoe, eketsa sehlopha se seng kamora hore tharollo ea teko ea phenolphthalein e se ke ea bontša bofubelu. Boloka mochesong oa kamore lihora tse 12. Chesa ho fihlela ho 90°C 'me u ntše 'mala ka carbon e sebetsang. Sefa, hlatsoa masala a sefe ka metsi, 'me qetellong u fetole boleng ba pH ho 3 ka hydrochloric acid e matlafalitsoeng. Pholisa 'me u etse kristale, sefa 'me u hlatsoe ka metsi ho fihlela ho se na karabelo ea chloride ion. Lihlahisoa tse omisitsoeng.
Karabelo ea ethylenediamine le formaldehyde le sodium cyanide. Kopanya tharollo ea metsi ea 60% ea ethylenediamine, tharollo ea metsi ea 30% ea sodium cyanide le sodium hydroxide, 'me u boloke motsoako ho 20°C ka lihora tse 0.5. Ebe u eketsa tharollo ea metsi ea formaldehyde ka ho theoha. Kamora karabelo, buka ea lik'hemik'hale e ile ea tlosoa 'me metsi a fetoha mouoane. Ebe u pheta ts'ebetso e boletsoeng ka holimo, u eketsa formaldehyde e feteletseng ka lekhetlo la ho qetela ho lumella sodium cyanide ho arabela ka botlalo. Fetola pH ho 1.2 ka asiti e hlapollotsoeng. Precipitate e tšoeu e ile ea potlaka, ea sefshoa, ea hlatsuoa ka metsi, 'me ea omisoa ho 110°C. Fumana sehlahisoa.
Tšimo ea kopo
Ethylenediaminetetraacetic acid (EDTA) ke sesebelisoa sa bohlokoa sa ho kopanya lintho. EDTA e sebelisoa haholo 'me e ka sebelisoa e le sesebelisoa sa ho soeufatsa lintho ha ho sebetsoa lisebelisoa tse nang le 'mala o bobebe, lintho tse thusang ho daea, lintho tse thusang ho sebetsana le fiber, lintho tse eketsang botle, lintho tse thibelang ho ruruha ha mali, sesepa, lintho tse tsitsitseng, lintho tse qalang ho etsa polymerization ea rabara ea maiketsetso, EDTA ke chelate. E ka etsa metsoako ea lik'hemik'hale tse qhibilihang ka metsing tse tsitsitseng ka litšepe tsa alkali, likarolo tsa lefats'e tse sa tloaelehang le litšepe tsa phetoho. Ntle le letsoai la sodium, ho boetse ho na le letsoai la ammonium le matsoai a fapaneng a kang tšepe, magnesium, calcium, koporo, manganese, zinki, cobalt le aluminium. Letsoai le leng le le leng le na le ts'ebeliso e fapaneng. Ho phaella moo, EDTA e ka boela ea sebelisoa ho ntša litšepe tse kotsi tse nang le mahlaseli a kotsi 'meleng oa motho ka potlako le ho bapala karolo ea ho ntša chefo. Hape ke sesebelisoa sa kalafo ea metsi. EDTA hape ke sesupo sa bohlokoa, empa e sebelisetsoa ho ntsha nickel ea tšepe, koporo, jj. Ha e sebelisoa, e tlameha ho sebelisoa hammoho le ammonia ho sebetsa e le sesupo.
Tlhaloso ea kaho
Asiti ea Ethylenediaminetetraacetic
CAS: 60-00-4
Foromo ea limolek'hule: C10H16N2O8
Boima ba limolek'hule: 292.2
foromo: kristale
Sebaka sa ho qhibiliha 250 °C (dec.) (ho bonesitsoe)
Boemo ba ho belisa 434.18°C (khakanyo e akaretsang)
Botenya 0,86 g/cm3
Khatello ea mouoane <0.013 hPa (20 °C)
Lenane la refractive n20/D 1.363
Sebaka sa ho bonesa >400°C DIN 51758
Polokelo le lipalangoang
Paka: ho ea ka tlhoko ea bareki
Polokelo: Boloka sebakeng se omileng, se lefifi le se nang le moya o kenang.
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Melemo ea hau:
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