著者

小水 秀男 久永 輝明 藤井 悦男 川崎 正美 岩崎 卓也

出版者

社団法人 日本写真学会

雑誌

日本写真学会誌 (ISSN:03695662)

巻号頁・発行日

vol.42, no.5, pp.309-313, 1979-10-30 (Released:2011-08-11)

参考文献数

10

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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.