文章基本信息

标题：酸化剤によるチオシアン酸塩の分解
本地全文：下载
作者：小水秀男 ; 久永輝明 ; 藤井悦男等
期刊名称：日本写真学会誌
印刷版ISSN：0369-5662
电子版ISSN：1884-5932
出版年度：1979
卷号：42
期号：5
页码：309-313
DOI：10.11454/photogrst1964.42.309
出版社：The Society of Photographic Science and Technolgy of Japan
摘要：
Reaction of aq. NH₄SCN with 22 N H₂SO₄ was studied in order to estimate the yield of HCN from thiocyanate-fixers under strong acid conditions. Main gaseous products were identified to be HCN, CS, and COS by GC-MS. The amounts of HCN were measured by Pyridine-Pyrazolone method (JIS K 0102) and the maximum concentrations were ca. 1.2×10^-2 mol/l and 1.4×10^-2 mol/l for 2 mol/l and 4 mol/l NH₄SCN respectively. Yellow solid was precipitated in the reaction and the molecular formula was determined to be C₂H₂N₂S₃ by elementary analysis.