Chicago Sky Blue

Reactive Black 5, Naphthol Blue Black, Chicago Sky Blue ... 

Schliephake K, Mainwaring DE, Lonergan GT, Jones KI, Baker WL (2000) Transformation and degradation of the disazo dye Chicago sky blue by a purified laccase from Pycnoporus cinnabarinus. Enzyme Microb Biotechnol 27 100-107... 

Certain benzidine-derived (direct azo) dyes afford, by reduction, generally metabolic degradation in the gut or fiver, the free aryl amine. The azo cleavage may be brought about by gut bacteria and mammalian fiver azo reductases. In 1978, the US National Institute of Occupational Safety and Health (NIOSH) and the Occupational Safety and Health Administration (OSHA) reported that the benzidine-colorants Cl Direct Black 38, Cl Direct Blue 6 and Cl Direct Brown 95 were all reduced to 10a by rat liver in vivo, though trypan blue (35), Congo red (36) and Chicago sky blue were not. However, all six... 

Amido black lOB and Orange G are used as stains to prepare biological samples, and Direct Blue 12 (Chicago sky blue 6B) has been used to help in the location of the sentinel lymph node in malignant melanoma and early breast cancer. Oil Red O is used to visualize fingerprints, particularly on paper and similar substrates (Figure 13.12). 

ATLANTIC RESIN FAST BLUE D BELAMINE SKY BLUE FF CALCODUR RESIN FAST BLUE CHICAGO BLUE 6B CHLORAZOL SKY BLUE FF CHROiME LEATHER SKY BLUE C.L 24410 O C.L DIRECT BLUE 1... 

A direct dye of importance is Direct Blue 1 (Sky Blue FF). It is made by coupling tetrazotized o-dianisidine twice with Chicago acid (SS acid). Direct Blue 1 is used as a dye for cellulosic textiles, paper, and nylon. It is applied to cellulosic textiles and paper under neutral conditions, and it dyes them by adsorption. It also is used as an acid dye on nylon and must be applied under acidic conditions. 

Diamine, benzo. dianil Chicago, chlorazol, naphthamine, etc., blues and Sky flues, sulphon acid blue, sulphoncyanine, sulphonazurine, erio fast bine S W R, tolyl blue G R extra and 5 R extra, etc. a ur is not V a r or tc dant. Mordant absent t Salt Dye stuff. Confirm by boil ing with 5 per cent, sodium acetate and a piece of white cotton. CbttOn stained. ><... 

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