Ethylenediaminetetraacetic acid CAS: 60-00-4
Ntinye ngwaahịa
Ethylenediaminetetraacetic acid CAS: 60-00-4
chemical Njirimara
Ngwaahịa a na-esi na mmiri pụta dị ka ntụ ntụ ọcha. Solubility na mmiri na 25 ℃ bụ 0.5g / L. Na-adịghị ike soluble na mmiri oyi, mmanya na n'ozuzu organic solvents. Soluble na sodium hydroxide, sodium carbonate na ngwọta amonia.
Usoro mmepụta:
Mmeghachi omume nke ethylenediamine na chloroacetic acid. Tinye 100kg nke chloroacetic acid, 100kg nke ice na 135kg nke sodium hydroxide ngwọta (30%) n'ime kettle mmeghachi omume, wee tinye 18kg nke 83% na 84% ethylenediamine n'okpuru mkpali. Tinye ya na 15 Celsius C maka awa 1. Tinye 30Chemicalbook% sodium hydroxide ngwọta na batches nke 10L oge ọ bụla. Mgbe mgbakwunye nke ọ bụla, tinye ogbe ọzọ mgbe ngwọta nyocha phenolphthalein egosighi uhie. Debe na ụlọ okpomọkụ maka awa 12. Kpoo ọkụ ruo 90 Celsius ma jiri carbon arụ ọrụ mee ka agba gbanwee. Wepụta, jiri mmiri sachaa ihe fọdụrụ nzacha, ma mechaa dozie uru pH ka ọ bụrụ 3 site na iji hydrochloric acid gbanyere mkpọrọgwụ. Jụụ na kristal, kpochaa ma were mmiri saa ruo mgbe enweghị mmeghachi omume ion chloride. Ngwaahịa akpọnwụwo.
Mmeghachi omume nke ethylenediamine na formaldehyde na sodium cyanide. Gwakọta 60% ethylenediamine aqueous solution, 30% sodium cyanide aqueous solution na sodium hydroxide, ma debe ngwakọta ahụ na 20ºC maka 0.5h. Mgbe ahụ tinye formaldehyde aqueous ngwọta dropwise. Mgbe mmeghachi omume ahụ gasịrị, akwụkwọ kemịkal ahụ kwụsịrị ma wepụ mmiri ahụ. Mgbe ahụ megharịa ọrụ ahụ dị n'elu, gbakwụnye formaldehyde nke ikpeazụ maka oge ikpeazụ iji mee ka sodium cyanide meghachi omume kpamkpam. Gbanwee pH ka 1.2 na itughari acid. A na-ebuli mmiri na-acha ọcha, kpochaa, jiri mmiri saa ya, ma kpọọ nkụ na 110ºC. Nweta ngwaahịa ahụ.
Mpaghara ngwa
Ethylenediaminetetraacetic acid (EDTA) bụ ihe dị mkpa na-emekọ ihe ọnụ. A na-eji EDTA eme ihe n'ọtụtụ ebe ma enwere ike iji ya dị ka ihe ndozi na-acha ọcha na nhazi nke ihe ndị na-ahụ anya na agba, ihe enyemaka ịcha akwa, ihe mgbakwunye fiber, ihe mgbakwunye ịchọ mma, ọgwụ mgbochi ọbara, ihe ncha, stabilizers, roba polymerization initiators, EDTA bụ ihe nnọchi anya chelate. Ọ nwere ike na-etolite ike mmiri-soluble chemical ogige na alkali ọla, obere ụwa ọcha na mgbanwe ọla. Na mgbakwunye na nnu sodium, e nwekwara nnu ammonium na nnu dị iche iche dị ka ígwè, magnesium, calcium, ọla kọpa, manganese, zinc, cobalt, na aluminom. Nke ọ bụla n'ime nnu ndị a nwere ojiji dị iche iche. Na mgbakwunye, EDTA nwekwara ike iji ngwa ngwa wepụ ọla redioaktivu na-emerụ ahụ n'ahụ mmadụ ma rụọ ọrụ na-emebi ihe. Ọ bụkwa onye na-ahụ maka ọgwụgwọ mmiri. EDTA bụkwa ihe ngosi dị mkpa, ma ọ na-eji titrate metal nickel, ọla kọpa, wdg. Mgbe ejiri ya, a ghaghị iji ya na amonia rụọ ọrụ dị ka ihe ngosi.
Nkọwa ihe owuwu
Ethylenediaminetetraacetic acid
Ọnọdụ: 60-00-4
Usoro ihe omimi: C10H16N2O8
Arọ molikula: 292.2
ụdị: crystalline
Ebe mgbaze 250 Celsius (dec.)(ọkụ)
Ebe esi esi 434.18°C (atụmatụ siri ike)
Njupụta 0,86 g/cm3
Uzuoku mgbali <0.013hPa (20 Celsius)
Ntụgharị ntụgharị n20/D 1.363
Ebe Flash>400°C DIN 51758
Nchekwa na njem
Nkwakọ ngwaahịa: dị ka ndị ahịa chọrọ
Nchekwa: Chekwaa n'ebe kpọrọ nkụ, ọchịchịrị na ikuku.
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