Naphthol blue black

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

Amido black 10B stain 0.1% (w/v) amido black (naphthol blue black 10B, Sigma) in 10% (v/v) acetic acid 5% (v/v) acetic acid Plastic boxes... 

Azo acid blue, azo cyanme, azo merino blue, azo navy blue, brilliant cloth blue, chromazone blue,dommgo blue black, eno fast brilliant blue, ethyl acid blue, cresol blue black, lanacyl blue, naphthol blue black, naphthylamme blue black, " orthocyanme, phenyl blue black, sulphon acid blue, tolyl blue S B, S R, S T... 

Nasr, C. Vinodgopal, K. Hotchandani, S. Kamat, P. V. Excited state and reduced forms of a textile diazo dye, Naphthol blue black. Spectral characterization using laser flash photolysis and pulse radiolysis. Radiat. Phys. Chem. 1997, 49, 159. 

Luo, J. and Hepel, M. (2001). Photoelectrochemical degradation of naphthol blue black diazo dye on WO3 film electrode. Electrochim. Acta 46(19), 2913-2922. 

The monoazo dye is not isolated. An excess of diazotized aniline has a deleterious effect. The naphthol blue-black B is salted out at 90°C. with 15 per cent salt to yield a lustrous, bronzy product. This dye, on reduction with Na2S at 25°, yields a valuable dark green azo dye, azo dark green, having the structure ... 

Naphthol Blue Black.—The dye known as naphthol blue black is... 

The azo compounds are important chromophores because of extended electronic delocalisation between the two aromatic rings via the azo bond. The darkness of the dye is enhanced by extensive delocalisation combined with several sulfonic acid groups which function as auxochromes. An example is provided by Naphthol Blue Black B (10), prepared from 8-amino-l-hydroxynaphthalene-3,6-disulfonic acid (H-acid) (11) by coupling it in the 7-position with diazotised p-nitroaniline in acidic solution and subsequently coupling in the 2-position with diazotised aniline in alkaline solution (Scheme 3). The H-acid (11) is a very versatile component in dye manufacture because it can couple with diazonium salts in either the 2-position or 7-position depending on the pH of the reaction medium, as indicated in Scheme 3. 

Serum proteins in general Amido Black (Naphthol Blue Black) 640 y... 

Naphthol Blue Black [1064-48-8] Xmax 618 nm, I(2)990C, U496, SH2505A, b... 

CAS 1064-48-8 EINECS/ELINCS 213-903-1 Synonyms Acid black 1, disodium salt 4-Amino-5-hydroxy-3-[(4-nitrophenyl) azo]-6-(phenylazo)-2,7-naphthalenedisulfonic acid, disodium salt Aniline blue black Cl 20470 2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-3-[(4-nitrophenyl) azo]-6-(phenylazo)-, disodium salt Naphthol blue black Classification Diazo color Empirical C22Hi6N6Na20gS2 Properties BIk. solid sol. 1-5 g/100 ml in water (18 C) m.w. 618.54 m.p. > 350 C Toxicology Harmful by inh., skin contact irritating to eyes, skin, respiratory system danger of cumulative effects mutagen TSCA listed... 

Naphthol blue black. See Acid black 1 2-Naphthol, decahydro-. See Decahydro-P-naphthol... 

After electrophoretic separation, protein fractions are visualized by staining with a suitable dye. Ideally, a dye should have equal affinity for all proteins and sufficient sensitivity to detect each protein. However, the most commonly used dye for cellulose acetate separation. Ponceau S, has 1.5 times greater affinity for albumin than for y-globulin. Other widely used dyes that behave in a similar manner are Amido black 10 B (Amidoschwarz 10 B), Naphthol blue black or Buffalo black, a stain commonly employed for agarose separations, and CBB, a dye widely used for agarose and polyacrylamide gel separations. In... 

Amido black 10-B protein stain. Dissolve 2 g Amido black 10-B (syn Naphthol blue-black) into 100 mL methanol-acetic acid solution. 

Protein staining solutions Solution 2A 0.1% Amido black or naphthol blue black, 40% methanol, 1% acetic acid. To make 100 ml, mix 59 ml distilled water with 40 ml methanol and 1 ml acetic acid. Dissolve 100 mg of amido black in this solution. Solution 2B 0.2% Ponceau S, 1% acetic acid. To make 100 ml, add 1 ml acetic acid to 99 ml distilled water and dissolve 200 mg Ponceau S in this solution. The staining solutions are stored at room temperature and can be used for several months. 

Nasr C., Vinodgopal K, Fisher L., Hotchandani S., Chattopadhyay A.K., Kamat P.V. Environmental photochemistry on semiconductor surfaces. Visible light induced degradation of a textile diazo dye, naphthol blue black, on Ti02 nanopartilces. J. Phys. Chem. 1996 100 8436-8442 Nasr S., Hotchandani S., Kamat P.V. The role of iodide in photoelectrochemical solar cells. Electron transfer between iodide ions and ruthenium polypyridyl complex anchored on nanocrystalline Si02 andSnOz films. J. Phys. Chem. B 1998 102 4944-4951... 

Jiang C, Guo Y, Hu C, Wang C, Li D (2004) Photocatalytic degradation of dye naphthol blue black in the presence of zirconia-supported Ti-substituted Keggin-type polyoxometalates. Mater Res Bull 39 251-257... 

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