Bromophenol Red

Other Names Bromophenol red Phenol, 4,4 -(3H-2,l-benzoxathiol-3-ylidene)fcis[2-bromo-, S,S-dioxide o-ToluenesuBonic acid, a,a-to(3-bromo-4-hydroxyphenyl)-a-hydroxy-, y-sultone 3H-2, 1-Benzoxathiole, phenol deriv. Bromphenol red CA Index Name Phenol, 4,4 -( 1,1 -dioxido-3H-2,1 -benzoxathiol-3-ylidene)t [2-bromo-CAS Registry Number 2800-80-8 Merck Index Number Not listed Chemical Structure 

Chemical/Dye Class Sulfonephthalein Molecular Formula Ci9Hi2Br205S Molecular Weight 512.17 pH Range 5.2-6.8 

Physical Form Reddish-brown powder Solubility Sparingly soluble in water soluble in ethanol UV-Visible (Xmax) 574 nm Melting Point 250°C 

Boiling Point (Calcd.) 586.8 50.0°C Pressure 760 Torr Synthesis Synthetic methods -  

Sumina, E. G. Shtykov, S. N. Tyurina, N. V. Physicochemical aspects of micellar thin-layer chromatography. Zh. Fiz. Khim. 2002, 76, 1697-1702 Chem. Abstr. 2002,138, 214653. 

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Bromophenol blue, 4 362t Bromophenol red, 4 362t Bromo pink, 9 310... 

FIGURE 15.8 Color differences in four indicators bromophenol red, thymolphthalein, phenolphthalein, and bromocresol green. In each case the acidic form is on the left and the basic form is on the right. 

The cationic complex Fe(phen)3 (ferroin) forms extractable ion pairs with the acid dyes Methyl Orange (CHCI3, 8 = 4.8-10 at 420 nm) [101], and Bromophenol Blue (CHCI3, 8 = 6-8-10 ) [102,103], and eosin (CHCI3, e = 1.32-10 ) [104]. The associates of Fe(II)-bathophenanthroline with Bromophenol Blue, and Bromophenol Red have also been applied... 

Use has been made of ion-pairs formed by the cationic complex of zinc with 1,10-phenanthroline or 2,2 -dipyridyl and acid dyes, such as eosin, Erythrosin, Rose Bengal, dibromofluorescein (xanthene dyes) [72-74], Bromophenol Blue, Bromophenol Red (triphenylmethane dyes) [75,76]. In some of these methods, molar absorptivities are -10. Chloroform is the usual extraction solvent. 

Methyl red Methyl red sodium salt Chlorophenol red Hematoxylin Litmus extra pure Bromophenol red Bromocresol purple 4-Nitrophenol Bromoxylenol blue Alizarin 4.4 t- V ... 

Madhusudan and Vijajan, M., Additional binding sites in lysozyme. X-ray analysis of lysozyme complexes with bromophenol red and bromophenol blue. Protein Eng., 5(5), 399, 1992. 

The acidities increase in thionyl chloride xylenol blue < cresol red < bromo-thymol blue < bromophenol red < bromophenol blue and in acetyl chloride cresol red < xylenol blue < bromothymol blue < bromophenol red < bromophenol blue. 

Ameta SC, Punjabi PB, Vardia J, Madhwani S, Chaudhary S (2006) Use of bromophenol red-EDTA system for generation of electricity in a photogalvanic cell. J Power Sources 159 747... 

Bromochlorophenol blue, B-00497 Bromocresol green, B-00498 Bromocresol purple, B-00499 Bromophenol blue, B-00542 Bromophenol red, B-00543 Bromophthalexon S, B-00559 Bromopyrogallol red, B-00574 Bromothymol blue, B-00581 Bromoxylenol blue, B-00583 Butylrhodamine B, in R-00002 C.I. Basic blue 20 Dichloride, in C-00002 C.L Basic violet 2 B, HCl, in C-00003 >Ceplac, in E-00020 2 -Chlorofluorescein, C-00116 4 -Chlorofluorescein, C-00117 Chlorophenol red, C-00197 Chromal blue G Di-Na salt, in C-00275 Chromazurol S Tri-Na salt, in C-00277 Chrome green G, C-00283 Chromoxane violet R, in E-00015 Chromoxan violet 5B, C-00295 o-Cresolbenzein, C-00305 m-Cresolphthalein, C-00306... 

Bromochlorophenol blue, B-00497 Bromocresol green, B-00498 Bromocresol purple, B-00499 Bromophenol blue, B-00542 Bromophenol red, B-00543... 

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