Reference

Azo and cationic azo dyes with 2-amino-4,5-dicyanoimidazole as the amine

Azo and cationic azo dyes with 2-amino-4,5-dicyanoimidazole as the amine. Arakawa, Kyokuji; Yamamoto, Masao; Kurahashi, Takeo; Onodera, Nobuo (Hodogaya Chemical Co., Ltd., Japan). Japan. Kokai JP 51124122 29 Oct 1976 Showa, 10 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C09B029-08. 62608-35-9 and 94-68-8 are also in the experiment. APPLICATION: JP 75-48234 22 Apr 1975. DOCUMENT TYPE: Patent CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) The title dyes for acetate fibers and acrylic fibers (cationic dyes) were prepd. For example, 2-amino-4,5-dicyanoimidazole [40953-34-2] was diazotized and coupled with N,N-diethylaniline [91-66-7] to give 4,5-dicyano-2-[4-(diethylamino)phenylazo]imidazole [62603-15-0], reddish orange on acetate fiber, which was quaternized with di-Me sulfate and salted with ZnCl2-NaCl to give I(R = CN) [62608-17-7], reddish violet on acrylic fiber, with higher lightfastness and better discharge properties than I (R = H). .

Gas chromatographic determination of aromatic amines in the air

Gas chromatographic determination of aromatic amines in the air. Dmitriev, M. T.; Ulanova, T. S.; Mikhailov, A. V. (NII Obshch. Kommunal'n. Gig., Moscow, USSR). Gig. Sanit., (1), 57-9 (Russian) 1985. CODEN: GISAAA. ISSN: 0016-9900. DOCUMENT TYPE: Journal CA Section: 59 (Air Pollution and Industrial Hygiene) Section cross-reference(s): 80 A method for the detn. of aniline (I) [62-53-3], N-methylaniline (II) [100-61-8] N,N-dimethylaniline (III) [121-69-7], N-ethylaniline (IV) [103-69-5], N-ethyl-o-toludine (V) [94-68-8], and N,N-diethylaniline (VI) [91-66-7] includes preconcn. with silica gel followed by extn. with MeOH, and quant. detn. of amine by gas chromatog. The std. air-vapor mixts. of amines are prepd. by dynamic diln. The detn. limits are 0.05, 0.02, 0.006, and 0.01 mg/m3 for I, II, III,and IV-VI, resp., in a 90-L sample analyzed. The detn. sensitivity is 0.025 for I, II, IV, V, VI and 0.0 mg for III. The detn. error is ￡ 4.78, ￡ 9.11, ￡ ±5.8, ￡ ± 14.80, ￡ ± 8.42, and ￡ 13.4% for I, III, IV, V, VI, II, resp.