Waikawa Ethylenediaminetetraacetic CAS: 60-00-4
Whakataki hua
Waikawa Ethylenediaminetetraacetic CAS: 60-00-4
ngā āhuatanga matū
Ka puta te tioata o tēnei hua mai i te wai hei paura mā. Ko te wairewatanga ki te wai i te 25℃ he 0.5g/L. Kāore e wairewa i roto i te wai matao, te waipiro me ngā whakarewa waro whānui. Ka wairewa i roto i ngā otinga konutai hauwai, konutai kāponāte me te haukini.
Tikanga whakaputa:
Te tauhohenga o te ethylenediamine me te waikawa chloroacetic. Tāpirihia he 100kg o te waikawa chloroacetic, he 100kg o te hukapapa me te 135kg o te otinga konutai hauwai (30%) ki roto i te ipu tauhohenga, kātahi ka tāpirihia he 18kg o te 83% ki te 84% ethylenediamine me te whakaoho. Whakatōkia ki te 15°C mō te 1 hāora. Tāpirihia he otinga konutai hauwai 30% i roto i ngā puranga o te 10L i ia wā. Whai muri i ia tāpiritanga, tāpirihia tētahi atu puranga i muri i te korenga o te wai whakamātautau phenolphthalein e whakaatu whero. Puritia ki te pāmahana rūma mō te 12 hāora. Whakamahanahia ki te 90°C ka tango tae ki te waro whakahohe. Tātarihia, horoia te toenga tātari ki te wai, ā, i te mutunga, whakatikatikahia te uara pH ki te 3 ki te waikawa hauwai hauwai kukū. Whakamataohia, ka whakatiotia, tātarihia ka horoia ki te wai kia kore ra ano he tauhohenga ion chloride. Ngā hua maroke.
Te tauhohenga o te ethylenediamine ki te formaldehyde me te konutai cyanide. Whakaranua te 60% o te wairewa ethylenediamine, te 30% o te wairewa konutai cyanide me te konutai hauwai, ā, puritia te ranunga ki te 20°C mō te 0.5h. Kātahi ka tāpirihia te wairewa formaldehyde kia maturuturu iho. Whai muri i te tauhohenga, ka wetekina te pukapuka matū, ā, ka mimiti te wai. Kātahi ka whakahokia te mahi i runga ake nei, me te tāpiri i te formaldehyde nui rawa mō te wā whakamutunga kia taea ai e te konutai cyanide te tauhohe katoa. Whakatikatikahia te pH ki te 1.2 me te waikawa waimeha. Ka puta he matū mā, ka tātarihia, ka horoia ki te wai, ā, ka whakamarokehia ki te 110°C. Tikina te hua.
Mara tono
He mea nui te waikawa Ethylenediaminetetraacetic (EDTA). He whānuitia te whakamahinga o te EDTA, ā, ka taea te whakamahi hei whakapiri mā i roto i te tukatuka i ngā rauemi tae-ataata, ngā āwhina tae, ngā āwhina tukatuka muka, ngā tāpiringa whakapaipai, ngā rongoā whakaheke toto, ngā hopi horoi, ngā mea whakau, ngā mea whakaoho polymerization rapa hangai. He chelate te EDTA hei matū māngai mō ngā ranunga. Ka taea e ia te hanga matatini matū wairewa-wai pumau me ngā konganuku kawakore, ngā huānga whenua onge me ngā konganuku whakawhiti. Haunga ngā tote konutai, kei reira anō ngā tote ammonia me ngā momo tote pēnei i te rino, te konupūmā, te konupūmā, te parahi, te manganese, te konutea, te cobalt, me te konumohe. He rerekē ngā whakamahinga o ia tote. Hei tāpiri, ka taea hoki te whakamahi i te EDTA hei tango tere i ngā konganuku irahiko kino mai i te tinana tangata, ā, hei mahi whakakore paitini. He kaihoko maimoatanga wai anō hoki. He tohu nui anō hoki te EDTA, engari ka whakamahia hei titration i te konganuku nikara, te parahi, me ētahi atu. Ina whakamahia, me whakamahi tahi me te ammonia kia mahi hei tohu.
Whakaahuatanga hanga
Waikawa Ethylenediaminetetraacetic
CAS: 60-00-4
Tātai ngota: C10H16N2O8
Taumaha ngota: 292.2
āhua: tioata
Te ira rewa 250 °C (whakaiti)(whakamārama)
Te pūmahana koropupū 434.18°C (whakatau tata)
Kiato 0,86 karamu/cm3
Pēhanga kohu <0.013 hPa (20 °C)
Taupū whakaata n20/D 1.363
Te pūwāhi mura >400°C DIN 51758
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