Glass hydroxypropyl oxide analyzer device with water bath bracketProvided by Shanghai Shupei Experimental Equipment Co., Ltd., suitable for major laboratories and research institutions, with high-quality products. Welcome new and old customers to choose.

Glass hydroxypropyl oxide analyzer device with water bath bracketProduct Introduction:

In the pictureDdo25mlThe length of the side neck and outer aluminum box of the double necked distillation flask is95mmThe fractionation columnEConnected:CFor the connecting pipe, the inner diameter at the end is0.25～1.25mmInsert it into the distillation flask;BFor steam generation pipes（25mm×150mm）The inner diameter of its end is also0.25～1.25mmThe gas inlet pipe is connected toCbe interlinked;FFor condenser tubes, outer tube length100mm, withEconnect.Gdo125mlGraduated bath with scaleAMaintain the temperature at155°C

Determination method
Take the specified amount of the test substance under each drug item, weigh it accurately, and place it in a distillation flaskDIn the middle, add30％(g/g)Chromium trioxide solution10mlOn the steam generation pipeBFill water into the middle until near the joint,Connect the distillation device. supportBgiveDAll immersed in oil bath(Can be glycerol)Make the liquid level of the oil bath andDThe liquid surface of chromium trioxide solution in a bottle. Turn on the cooling water,If necessary, introduce nitrogen gas flow and control its flow rate to about per second1A bubble. a surname30Heat up the oil bath within minutes155℃, and maintain this temperature until the collected distillate is about50mlRemove the condenser tube from the fractionation column, rinse it with water, and add phenolphthalein indicator solution to the collected liquid by merging the washing solution2Drip, titrate with sodium hydroxide solution(0.02mol/L)Titrate topHdo6.9～7.1(Measure with an acidity meter)Record the volume consumedV<[1]>(ml)Then add sodium bicarbonate0.5gCompared with dilute sulfuric acid10mlLet it stand until no more carbon dioxide is produced, then add potassium iodide1.0gSeal tightly, shake well, and place in a dark place5Minutes, add starch indicator solution1ml, using sodium thiosulfate titrant(0.02mol/L)Titrate to the endpoint and record the volume consumedV<[2]>(ml)Conduct another blank experiment,Record the consumed sodium hydroxide titrant separately(0.02mol/L)Titration solution with sodium thiosulfate(0.02mol/L)The volumeV<[a]>giveV<[b]>(ml)Calculate according to the following formula.
　　OCH2CHOHCH3％＝(V<[1]>M<[1]>－KV<[2]>M<[2]>)×(0.0751／W)×100％
In the formula
　　KCorrection coefficient for blank spaceM<[1]>V<[a]>／M<[2]>V<[b]>；
　　V<[1]>Consume sodium hydroxide titrant for the test sample(0.02mol/L)The volume,ml；
　　V<[2]>Consume sodium thiosulfate titrant for the test sample(0.02mol/L)The volume,ml；
　　V<[a]>Consume sodium hydroxide titrant for blank experiment(0.02mol/L)The volume,ml；
　　V<[b]>Consume sodium thiosulfate titrant for blank experiment(0.02mol/L)The volume,ml；
　　WFor the weight of the test sample,g；
　　M<[1]>The concentration of sodium hydroxide titrant;
　　M<[2]>The concentration of sodium thiosulfate titrant.

Product configuration:

Hydroxypropyl oxide analyzer:298first

Hydroxypropyl oxide analyzer+Bracket:489first

Hydroxypropyl oxide analyzer+bracket+Water bath:1200first

Single water bath:640first

Single bracket:189first