Nzira yekunyungudika uye nzira yekutsunga kwehydroxyprupyl methylcellose hpmc

bvunzo nzira

Nzira Yezita: Hyplemllose-Kugadziriswa kweHydroxyProxoxyProxy Broup-kutsunga kwehydroxyprosoxy Boka

Scope of application: Iyi nzira inoshandisa iyo hydroxyprusikiti yekutsunga nzira kuti uone zviri mukati mehydroxyprosoxy muHyprollose. Iyi nzira inoshanda kune hyprobollose.

Nheyo yenzira:KuverengaZvemukati zvehydroxypriyopropopoxe

Reagent:

1. 30% (G / G) Chromium Trioxide Solution

2. Hydroxide

3. Phenolphthalein Indicator Solution

4. Sodium bicarbonate

5. Dilute Sulfutic acid

6. Potassium iodide

7. Sodium Thiosulfate titration Solution (0.02mol / l)

8. Starch Indicator Solution

Zvishandiso:

Kuenzanisira Kuenzanisa:

1. Sodium hydroxide titration solution (0.02mol / l)

Kugadzirira: Tora 5.6ml yeiyo yakajeka yakajeka sodium yehydroxide solution, wedzera ichangobikwa mvura inotonhora mvura kuti iite 1000ml.

Calibration: Tora anenge 6G yeyakajairwa potastium hydrogen potlate yakaomeswa pa105 ° C to Garally Mvura inotonhora, zunza kuti riite kuti zviwedzere zvakanyanya sezvinobvira; Wedzera 2 Madonhwe ePhenolphthalein Solidator Solution, paunenge uchisvika kumagumo emvura, potassium hydrogen inofanirwa kuve yakanyungudutswa, uye kuitiswa kusvikira mhinduro yave pink. Yese 1ML yeSodium Hydroxide Tenga Solution (1Mol / L) yakaenzana ne20.42mg ye potasasium hydrogen phtrate. Verenga kusungirirwa kwemhinduro iyi zvichienderana nekupindwa kwemhinduro iyi uye huwandu hwe potasasium hydrogen phthalate yakatorwa. Zvikuru zvevhu dilute 5 times kuti uite gadziriso 0.02mol / l.

Chengetedzo: chiise mudhiri rePolyethyliyle uye ichiisa chisimbiso; Kune maburi maviri muPlug, uye 1 girazi tube yakaiswa mugomba rimwe nerimwe,

2. Phenolphthalein Indicator Solution Tora 1G ye phenolphthalein, wedzera 100ml ye ethanol yekunyungudika

3. Sodium Thiosulfate Solition (0.02MOL / L) Gadziriro yeSodium Carbonate inotonhora, Calibration: Tora anenge 0.15g yeyakajairwa potassium Dichromate akaomeswa neyekupedzisira, Wedzerai Mushure memaminitsi gumi munzvimbo ine rima, wedzera 250ml yemvura kuti ishe, uye mhinduro yegumi kusvika pakupera kweruzivo, uenderere mberi ruvara rwebhuruu rwacho ndokuva green green Yese 1ML yeSodium Thiosulfate (0.1mol / l) yakaenzana ne4,903g ye potasasium dichromate. Verenga kusunganidzwa kwemhinduro maererano nekupindwa kwemhinduro uye huwandu hwe potasasium dichromate inotorwa. Zvikuru zvevhu dilute 5 times kuti uite gadziriso 0.02mol / l. Kana tembiricha yemakamuri iri pamusoro pe25 ° C, tembiricha yemhinduro yekugadzirisa uye mvura yemvura inofanira kutonhorera kusvika 20 ° C.

4. Starch Chiratidzo Chekupedzisira Tora 0.5g yeSrarch Starch, Sunungura Mvura Yemvura uye Simudza zvishoma nezvishoma, ramba uchiburuka kwemaminetsi maviri, durura, udurure munyaradzi, uye zvakagadzirirwa.

Mhinduro iyi inofanira kuve ichangobva kugadzirirwa usati washandiswa.

Maitiro ekuverenga Zadza iyo Steam inogadzira tube b nemvura kune iyo yakabatanidzwa, uye kubatanidza iyo distillation unit. Immerse vese b uye d mu weoiri yekugeza (ita glycerin yekugezesa yeiyo mwero weCadichlorisi Mucheka D, uye kana zvichidikanwa Mukati memaminitsi makumi matatu, simudza tembiricha yekugezera yeoiri kusvika ku155ºC, uye chengetedza iyo yekudzora kwechidimbu, gaya V1 (ml), wozowedzera 0.5g yeSodium Bicarbonate uye 10ML yeSultur Diodide Diodide, thinda kusvika kumagumo poindi, rekodha vhoriyamu yakadyiwa V2 (ML). Mune imwe test test, rekodha vhoriyamu va uye vb (ml) yeiyo yakadyiwa sodium Hydroxide Solution (0.02mol / L) uye Sodium Thiosulfate Tem Solution (0.02Mol / L) zvichiteerana.