BASF synthetic dyes

Sulfonic Acid-Based Dyestuffs. Sulfonic acid-derived dyes are utilized industrially in the areas of textiles (qv), paper, cosmetics (qv), foods, detergents, soaps, leather, and inks, both as reactive and disperse dyes. Of the principal classes of dyes, sulfonic acid derivatives find utiUty in the areas of acid, azoic, direct, disperse, and fiber-reactive dyes. In 1994, 120,930 t of synthetic dyes were manufactured in the United States, of which 5,600 t were acidic (74). The three largest manufacturers of sulfonic acid-based dyes for use in the United States are BASF, Bayer, and Ciba-Geigy. 

Perkin, an Englishman, working under a German professor, Hoffman, discovered the first synthetic dye, and even today the geographical focus of dye production lies in Germany (BASF, Dystar), England (Avecia), and Switzerland (Clar-iant, Ciba Specialties). Far Eastern countries, such as Japan, Korea, and Taiwan, as well as countries such as India, Brazil, and Mexico, also produce dyes. 

The business with synthetic dyes forms the starting point of BASF s success story in China. Expansion of the company s sales organization prompted the company s first activities in China in the mid 1880s, when it sold and marketed the magenta dye fuchsin to the flourishing cotton cloth market (Sung, J. K.). 

Synthetic alizarin (5.1), Cl Mordant Red 5 (5.2) and Cl Mordant Orange 1 (5.3), the first azo dye capable of forming a metal complex, in this case via the salicylic acid residue, are examples of the simple mordant dyes in widespread use at the time when Werner propounded his theory. The first metal-complex dyes to be prepared in substance, rather than within the fibre, were discovered by Bohn of BASF in 1912 by treating hydroxyanthraquinonesulphonic acids with a warm solution of a chromium(III) salt. In the... 

Cellitaztd . [BASF AG] Disperse dye for dyeing and printing acetate, triacetate, synthetic fibers. 

Setamol . [BASF AG] Dispersants for dye dispersions used for vat dyes for synthetic and cellulose fibers. 

Dioxyanthraquinone 1,4-Doa EINECS 201-368-7 HSDB 5242 Macrolex Orange GG NSC 15367 Quinizarin Quinizarine Smoke Orange R Solvent Orange 86. Antioxidant in synthetic lubricants, dyes. Yellow-ned crystals mp = 200° Am = 225, 249, 279325,450 (e = 21878, 30903, 10233, 2455, 8511 EtOH) insoluble in H2O, soluble in organic solvents. BASF Corp. Sandoz. 

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