Reference

Triazine dye fixing agents

Triazine dye fixing agents. Stead, Cecil Vivian; Evans, Geoffrey Edward; Shore, John (Imperial Chemical Industries PLC, UK). Brit. UK Pat. Appl. GB 2119367 A1 16 Nov 1983, 7 pp. (English). (United Kingdom). CODEN: BAXXDU. 41602-21-5 and 89130-60-9 are cas registry numbers. These chemicals are also mentioned in this article. CLASS: IC: C07D251-40; D06P005-22. APPLICATION: GB 83-1004 14 Jan 1983. PRIORITY: GB 82-12898 5 May 1982. DOCUMENT TYPE: Patent CA Section: 40 (Textiles) Compds. contg. two aminohalo-s-triazine moieties linked by a diamine residue and contg. quaternary ammonium groups are fixing agents for anionic dyes, e.g. reactive, in exhaust dyeing of cellulose substrates. Thus, reaction of (4-aminophenyl)trimethylammonium chloride hydrochloride [6148-14-7] with cyanuric chloride [108-77-0] in aq. acetone at pH 6-7 and <10° followed by treatment with p-phenylenediamine [106-50-3] at pH 6.0-6.5 and heating at 30-35° gave white cryst. I [89130-61-0]. Cotton fabric which had been treated at 60° with aq. I in the presence of Na2CO3 was dyed at 40° in an aq. soln. of C.I. Reactive Red 2, treated with Na2CO3 at 40°, rinsed, washed in boiling water, rinsed and dried. The degree of dye exhaustion on the fabric was higher than that achieved with untreated control samples dyed in the presence or absence of NaCl, and much less dye was removed during the boiling water treatment after dyeing than in the case of the control dyeings. .

Some scientific and legal aspects of percutaneous toxicity

Some scientific and legal aspects of percutaneous toxicity. Examples of hair dyes. Maibach, H. I. (Med. 119-34-6 and 2784-94-3 are cas registry numbers. These chemicals are also mentioned in this article. Sch., Univ. California, San Francisco, CA, USA). Labo-Pharma - Probl. Tech., 335, 727-9 (French) 1983. CODEN: LPPTAK. ISSN: 0458-5747. DOCUMENT TYPE: Journal CA Section: 62 (Essential Oils and Cosmetics) Section cross-reference(s): 1, 63 The pharmacokinetics of hair dye components was investigated in humans and animals to assess the degree of uptake and their toxicity. p-Phenylenediamine [106-50-3], resorcinol [108-46-3], 4-amino-2-hydroxytoluene [2835-95-2], 2-nitro-p-phenylenediamine [5307-14-2], 2-nitro-4-aminophenol [119-34-6] and HC blue N. 1 [2784-94-3] were absorbed very slightly under normal conditions and the absorption was lower when applied to the scalp than to clean shaven skin due to a strong fixation of the dyes by the hair. The results were somewhat similar in humans, rhesus monkeys and guinea pigs. .