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지식나눔

지식나눔

polyvinylpyrrolidone 을 녹일수 있는 용제류를 알고싶습니다.

2004-10-19 org.kosen.entty.User@4445327a 조동제(starks)
  • 2
참고로 가지고 있는 시약은 856487(ALDRICH) 입니다. 부탁드립니다.
  • polyvinylpyrrolidone
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  • 답변

    신정규님의 답변

    2004-10-19
    • 0

    첨부파일

    POLYVINYLPYRROLIDONE IDENTIFICATION Solubility Soluble in water, in ethanol and in chloroform; insoluble in ether pH 3.0 - 7.0 (5% soln) Precipitate formation To 5 ml of a 1 in 50 solution of the sample add 5 ml of dilute hydrochloric acid TS, 5 ml of water and 2 ml of 1 in 10 solution of potassium dichromate. A yellow precipitate forms. Add 5 ml of a 1 in 50 solution of the sample to 75 mg of cobalt nitrate and 0.3 g of ammonium thiocyanate dissolved in 2 ml of water, mix and acidify with dilute hydrochloric acid TS. A pale blue precipitate forms. To 5 ml of a 1 in 50 solution of the sample add 1 ml of 25% hydrochloric acid and 5 ml of 5% barium chloride solution and 1 ml of 5% phosphomolybdotungstic acid solution. A voluminous white precipitate is formed which becomes gradually blue on standing in daylight. (Note: The blue colouration on exposure to light distinguishes polyvinylpyrrolidone from polyethylene oxide adducts which give similar precipitates with the same reagents but which retain their white colour in light). [STUDIES ON TRANSFUSION OF POLYVINYLPYRROLIDONE SOLUTION WITH ADDED AMINO ACID CRYSTALS AND SORBITOL. 1. ON TRANSFUSION IN ANIMALS] Author(s): UENO K Source: Kumamoto Igakkai zasshi. The Journal of the Kumamoto Medical Society [Kumamoto Igakkai Zasshi] 1964 Jan 25; 38, pp. 19-31. >참고로 가지고 있는 시약은 >856487(ALDRICH) 입니다. >부탁드립니다.
    답변수정
    POLYVINYLPYRROLIDONE IDENTIFICATION Solubility Soluble in water, in ethanol and in chloroform; insoluble in ether pH 3.0 - 7.0 (5% soln) Precipitate formation To 5 ml of a 1 in 50 solution of the sample add 5 ml of dilute hydrochloric acid TS, 5 ml of water and 2 ml of 1 in 10 solution of potassium dichromate. A yellow precipitate forms. Add 5 ml of a 1 in 50 solution of the sample to 75 mg of cobalt nitrate and 0.3 g of ammonium thiocyanate dissolved in 2 ml of water, mix and acidify with dilute hydrochloric acid TS. A pale blue precipitate forms. To 5 ml of a 1 in 50 solution of the sample add 1 ml of 25% hydrochloric acid and 5 ml of 5% barium chloride solution and 1 ml of 5% phosphomolybdotungstic acid solution. A voluminous white precipitate is formed which becomes gradually blue on standing in daylight. (Note: The blue colouration on exposure to light distinguishes polyvinylpyrrolidone from polyethylene oxide adducts which give similar precipitates with the same reagents but which retain their white colour in light). [STUDIES ON TRANSFUSION OF POLYVINYLPYRROLIDONE SOLUTION WITH ADDED AMINO ACID CRYSTALS AND SORBITOL. 1. ON TRANSFUSION IN ANIMALS] Author(s): UENO K Source: Kumamoto Igakkai zasshi. The Journal of the Kumamoto Medical Society [Kumamoto Igakkai Zasshi] 1964 Jan 25; 38, pp. 19-31. >참고로 가지고 있는 시약은 >856487(ALDRICH) 입니다. >부탁드립니다.
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  • 답변

    김영일님의 답변

    2004-10-19
    • 0
    >참고로 가지고 있는 시약은 >856487(ALDRICH) 입니다. >부탁드립니다. Kollidon에 대한 BASF의 자료에서 발췌함. Polyvinylpyrrolidone에는 soluble grade(Povidon)와 insoluble grade(crospovidone)가 있슴. *** Solubility of Povidon : More than 10% in ; water, Diethylene glycol, Methanol, Ethanol, n-Propanol, Isopropanol, n-Butanol, Chloroform, PEG 400, Methylene chloride, 2-Pyrrolidone, Propylene glycol, 1,4-Butanediol, Glycerol, Triethanolamine, Propionic acid, Acetic acid Not more than 1% in ; Ethyl acetate, Dioxane, Pentane, Diethyl ether, Cyclohexane, Carbon tetrachloride, Toluene, Xylene, Liquid paraffin, Cyclohexanol
    답변수정
    >참고로 가지고 있는 시약은 >856487(ALDRICH) 입니다. >부탁드립니다. Kollidon에 대한 BASF의 자료에서 발췌함. Polyvinylpyrrolidone에는 soluble grade(Povidon)와 insoluble grade(crospovidone)가 있슴. *** Solubility of Povidon : More than 10% in ; water, Diethylene glycol, Methanol, Ethanol, n-Propanol, Isopropanol, n-Butanol, Chloroform, PEG 400, Methylene chloride, 2-Pyrrolidone, Propylene glycol, 1,4-Butanediol, Glycerol, Triethanolamine, Propionic acid, Acetic acid Not more than 1% in ; Ethyl acetate, Dioxane, Pentane, Diethyl ether, Cyclohexane, Carbon tetrachloride, Toluene, Xylene, Liquid paraffin, Cyclohexanol
    등록된 댓글이 없습니다.
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