잠시만 기다려 주세요. 로딩중입니다.

Sodium Isocyanate의 製法 및 Na₂CO₃, Urea, Biuret 混在時 그의 定量分析法에 關한 硏究

Preparation of Sodiumisocyanate and its Analyzing Method in the Presence of Impurities Na₂CO₃, Urea, and Biuret

약학회지 1963년 7권 2호 p.67 ~ 71
국채호,
소속 상세정보
국채호 (  ) - Seoul National University College of Pharmacy

Abstract


Studied the reaction mechanism and optimal reaction condition of the process ef preparing sodium isocyanate, by mesns of heating reaction of sodium carbonate and urea. Proposing, at the sametime, the quantitative analyzing method of sodium isocyanate in the presence of impurities of Na_(2)CO_(3), urea and biuret. 1. Sodium isocyanate could be prepared by means of heating reaction of sodium carbonate and urea. 2. Adding urea into the heated sodium carbonate is reasonable. 3. Quantitative analysis of sodium isocyanate in the presence of impurities, Na_(2)CO_(3), urea and biuret could be done by the following mothod:-adding nitrobarite solutien into sample solution in order to remove CO_(3)" and neotralize the solution, filtering off BaCO_(3), and then precipitating isocyanate as a silver salt, filtering off AgNCO, and then, titrating remaining AgNO_(3) with NH_(4)SCN, (indicator FeNH_(4)(SO_(4))_(2))

키워드

원문 및 링크아웃 정보

등재저널 정보

KCI