2.3.4.5- Tetrabromophenol

Bromphenol blue, tetrabromophenol-sulfonphthalein (indicator) dissolve 0.1 g in 7.45 mL 0.02 N NaOH and dilute with water to 250 mL or, 0.1 g in 100 mL 20% alcohol pH range yellow 3.6-4.6 violet-blue. 

Fig. 18 Chemical structure of tetrabromophenol blue and the color change after the reaction with human serum albumin (HSA)...

To make use of their merits and to erase their drawbacks, we carried out the multicolor visual colorimetry over a large concentration range of protein under the optimum mixing ratio of tetrabromophenol blue and eosin B using L a b color coordinates based on DCA. 

Fig. 20 Color variation of the mixed dyes (tetrabromophenol blue and eosin B) on the a b color coordinate for the response to the various concentrations of HSA (a) and their color sample (b) by simulation...

Albustix contains the indicator, tetrabromophenol blue, in a citrate buffer at pH 3. At this pH, the indicator has a yellow color. In the presence of protein, the color changes to green. The higher the protein concentration, the greener the indicator will be. Therefore, the color produced by the Albustix can be used to estimate the concentration of protein in urine. 

P2. Palefski, I. 0., Visualization of the gall-bladder with sodium tetrabromophenol-phthalein by oral or intraduodenal administration. Med. J. Record 121, 474-482 (1925). 

Methyl-4-nitro-2,3,5,6-tetrabromocyclohexa-2,5-dienone, a regiospecific nitrating agent was obtained in 88% yieid by the addition at 100°C over 10 mins, of nitric acid (d 1.52) to 4-methyl-2,3,5,6-tetrabromophenol in acetic acid followed by reaction for 2 hours at 5 C (ref.28). 

Yoshida, T., Yoshimura,)., Matsui, M Sugiura, T., and Minoura, H. (1999) Self-assembly of ZnO/ tetrabromophenol blue mixed thin film by one-step electrodeposition and its sensitized photoelectrochemical performance. Trans. Mater. Res. Soc. Jpn., 24,497-500. 

Tetrabromocresol 3,4,5,6-Tetrabromo-o-cresol. See Tetrabromo-o-cresol Tetrabromo-o-cresol CAS 576-55-6 EINECS/ELINCS 209-403-8 Synonyms 2-Methyl-3,4,5,6-tetrabromophenol 3,4,5,6-Tetrabromocresol 3,4,5,6-Tetrabromo-o-cresol... 

Tetrabromoethane s-Tetrabromoethane. See Tetrabromoethane 2,4,5,7-Tetrabromo-3,6-fluorandiol. See D C Red No. 21 Solvent red 43 Tetrabromofluorescein 2, 4, 5, 7 -Tetrabromofluorescein. See Solvent red 43 2,2, 6,6 -Tetrabromo-4,4 -isopropylidenediphenol. See Tetrabromobisphenol A Tetrabromomethane. See Carbon tetrabromide Tetrabromophenol blue Tetrabromophenol sulfophthalein. See Bromophenol blue Tetrabromophthalate diol CAS 20566-35-2 EINECS/ELINCS 243-885-0 Empirical Ci5Hi6Br407 Properties Amber vise, liq. sol. in acetone, toluene insol. in water, alcohol m.w. 627.90 dens. 1.80 kg/l... 

Lin, G. H. Y Brusick, D. J. Mutagenicity studies on two triphenylmethane dyes, bromophenol blue and tetrabromophenol blue. J. Appl. Toxicol. 1992,12, 267-274. 

Other Names Phenol, 4,4 -(4,5,6,7-tetrabromo-3H-2,l-benzoxathiol-3-ylidene)-fci5 [2,6-dibromo-, 5,5-dioxide, monosodium salt 3H-2,l-Benzoxathiole, phenol derivative Tetrabromophenol Blue monosodium salt... 

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