Mekhoa ea Teko
Lebitso la Mohato: Hypromellose-hypromellose-hypromellose - Khohlano ea Sehlopha sa Hydropxx ea Hydroxypropoxy
Boholo ba kopo: Mokhoa ona o sebelisa mokhoa oa hydroxydromp oa hydromp oa hydromp oa hydroxydromp oa ho tseba litaba tsa hydroxxpropoxy ho hyplomellose. Mokhoa ona o sebetsa ho hypromellose.
Molao-motheo oa Mokhoa:Balalitaba tsa hydroxypropix Sehlahisoang sa tlhahlobo ho latela mokhoa oa ho hanana.
Reaagent:
1. 30% (G / g) Tharollo ea chroxium Trioxide
2. Hydroxide
3. Phello ea sesupo sa Phenolphthalein
4. Sodium Bicarbonate
5. Dilute Sulfuntic Acid
6. Potassium Iodide
7. Sodium thiosulfate tharollo ea Tiration (0.02mol / l)
8. Sturch e starch
Lisebelisoa:
Mohlala:
1. Sodium hydroxide tharollo ea Talation (0.02mol / L)
Thato: Nka Tharollo ea Sodium ea Bydium ea Bydium ea Bydium e hlahiloeng e apereng bocha ho e etsa 1000ml.
Taba: Nka 6g ea potasiamo e tloaelehileng ea potassim hydrogen phthate e omisitsoeng ka 105 ° Kenya lithaele tse 2 tsa Phanolphthalein ka taba ena, sebelisa ntlha ena ea pheletso, 'me ha e fihla e le pinki ka botlalo,' me ha e fihla e le pinki ka botlalo Tharollo e 'ngoe le e' ngoe ea li-sodium hydroxide e lekanang (1mol / l) e lekana le 20.42mg ea potasiamo hydrogen phthate. Lekala khatello ea tharollo ena e ipapisitse le tharollo ea tharollo ena le palo ea potasiamo hydrogen phthary phtharae. Boikemisetso bo boholo makhetlo a 5 ho etsa mahloriso 0.02mol / l.
Boloka: E behe ka botlolong ea polyethylenene 'me u boloke e tiisitsoe; Ho na le masoba a mabeli ka sekoting, 'me tube e le' ngoe ea khalase e kenngoe ka sekoting se seng le se seng, tube e le 'ngoe e hokahane le tube ea soda,' me tube e le 'ngoe e sebelisetsoa ho anya mokelikeli.
2. Pherekano ea POLolphthalein e nka 1G ea phenonophthalein, eketsa 100ml ea etanol ea ho qhibiliha
3. Sodium Thiolfate tharollo (0.02mol Taba: Nka hoo e ka bang 0.15g ea potasiamo e tloaelehileng e neng e omisitsoe ka botlolo ea 'mala oa iodium, eketsa 40m ea metsi. Kamora metsotso e 10 sebakeng se lefifi, eketsa 250ml ea metsi ho fihlela haufi le ho ba le khalemelo e khanyang e le khalemelo e se nang thuso. 1ml ea sodiosulfate (0.1mol / l) e lekana le 4.903g ea potasiamo dichromate. Lekala khatello ea tharollo ho latela ts'ebeliso ea tharollo le palo ea potasiamo e nkuoeng. Boikemisetso bo boholo makhetlo a 5 ho etsa mahloriso 0.02mol / l. Haeba mocheso oa kamore o kaholimo ho 25 ° C, thempereishene ea tharollo ea karabelo le metsi a ho hlapolla e lokela ho khoptjoa ho hoo e ka bang 20 ° C.
4. Starch e ikemetseng e nka ho nka setšoantšo sa starch, eketsa butle ka bophara, tšela matla a maholo, 'me e se e loketse.
Tharollo ee e lokela ho lokisoa e sa ncha pele pele e sebelisoa.
Mehato ea ts'ebetso: Nka 0.1g ea sehlahisoa sena, e behelle ka nepo, e kenye botlolo ea Distillation D, Ekelletse 10ml ea 30% (G / G) tharollo ea Caddium. Tlatsa letheba la mouoane B ka metsi ho kopaneng, 'me u hokela yuniti ea distillation. Commerse ka bobeli ba b le d ka ho hlapela ka oli Ka hare ho metsotso e 30, phahamisa mocheso oa oli ho fihlela la 155º, le tiisa ka thata ho fihlela ka boima ba ph. (ML) Ka nako eo eketsa 0.5g Point, rekota Buka ea Buka ea V2 (ML). Ka tlhahlobo e 'ngoe e se nang letho, rekota lintlha tsa VA le VB (ML) ea tharollo ea sodium ea sodium hydroxte
Nako ea ho romella: April 25-2024