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. firita. Calibration: Tora anenge 0.15g yeyakajairwa potassium Dichromate akaomeswa na120m yemvura, Wedzera 2.0g ye potassius iodide, zunza zvinyoronyoro kuti unyunguduke, wedzera 40ml yeDilute Sulfutic acid, zunza zvakanaka uye chisimbiso zvakasimba; Mushure memaminitsi gumi munzvimbo ine rima, wedzera 250ml yemvura kuti ishe, uye pandakawedzera kuiswa kwechiitiko chekupedzisira inoshandiswa seyakayera muyedzo kururamisa. 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 uye yakagadzirira.

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. Nyora zvese b uye d mugetsi yekugezera (ita glycerin), ita kuti mvura yemafuta yekugezesa inoenderana neyechivira trichlolide solution mubhodhoro d, tendeukira mvura inotonhorera, uye kana zvichidikanwa, rega Iyo nitrogen rwizi runoyerera mukati uye kudzora huwandu hwayo kuyerera kune 1 bubble pane yechipiri. Mukati memaminitsi makumi matatu, simudza tembiricha yekugezesa kwemafuta kusvika ku155ºC, uye chengetedza tembiricha iyi kusvika paCondent madonhwe e phenolphthalein indicator solution, uye teki kune pH kukosha ndeye 6.9-7.1 (yakayerwa neye acidity meter) kusvika pasisina kabhoni Dioxide inogadzirwa, wedzera 1.0g ye potassium iodide, uye chidimbu nerima remaminitsi Iyo yekupedzisira 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.