【CAS名】Acetamide,
N-[2-[(2-bromo-4,6-dinitrophenyl)azo]-5-[(2-cyanoethyl)ethylamino]-4-methoxyphenyl]-
【结构式】略
【分子式/分子量】C20H20BrN7O6 = 534.33
【用途】涤纶及其混纺织物的染色
资料I:[J]
华东化工学院学报,
1988, 14(1): 59-64. 此刊物本人未收藏,所以无法抄录。
资料II:[M]
Peters Freeman: “Colour Chemistry”, 1991, P.153. 此书上海染料研究所有收藏,以下为本人以前的抄录文。(其中化合物CAS号为本人所加)
Preparation
of Disperse Blue 281.
【反应式】略
A
solution of nitrosyl sulfuric acid ([7782-78-7],已在2019年6月17日上网)
(prepared by dissolving 8.0g sodium nitrite in 150g concentrated sulfuric acid)
was cooled to 20°C. and 26.3g 6-bromo-2,4-dinitroaniline [1817-73-8] (0.1 mol.)
added. The diazonium mixture was stirred
at 15-20°C for 2 h and added to a solution of 25..9g
3-N-β-cyanoethyl-N-ethyl-4-methoxyacetanilide [19433-94-4] (0.1 mol/L) in 60g
acetic acid, 167g water and 194g ice and the mixture stirred for 1 h at 0-5°C. The coupling mass was neutralized to pH 7.0
with caustic soda, heated to 90°C and held for 1h. The separated dye
was filtered and the cake washed sulfate free.
The
yield was 47.7g (90% of the theoretically calculated value).
资料III:肖刚、杨新玮等主编《世界染料品种-2005年》,全国染料工业信息中心出版,P. 601,C.I.分散蓝281。
资料译自Colour
Index,文献中只有华东化工学院学报。
资料IV:何岩彬主编《染料品种大全》,沈阳出版社出版,2018年,P.937,C.I.分散蓝281,资料译自Colour Index,文献中只有华东化工学院学报。
陈忠源
2022年5月29日,星期日