Bromxylenol blue

Structural formula
General
Surname	Bromxylenol blue
other names	3 ', 3' '- dibromo- p -xylenolsulfonphthalein; 2-Bromo-4- [3- (3-bromo-4-hydroxy-2,5-dimethylphenyl) -1,1-dioxobenzo [ c ] oxathiol-3-yl] -3,6-dimethylphenol ( IUPAC );
Molecular formula	C 23 H 20 Br 2 O 5 S
External identifiers / databases
EC number	254-780-4
ECHA InfoCard	100,049,783
PubChem	417069
Wikidata	Q927039
properties
Molar mass	568.27 g mol −1
Physical state	firmly
Melting point	218 ° C
safety instructions
GHS labeling of hazardous substances	no GHS pictograms
	no GHS pictograms
H and P phrases	H: no H-phrases
	P: no P-phrases
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Bromxylenol blue is a triphenylmethane dye and belongs to the group of sulfonphthaleins. It is used as a pH indicator . It is represented by bromination of xylenol blue .

properties

Bromxylenol blue can be used as an indicator in acid-base titration , since at pH 6.0–7.6 there is a color change from yellow to blue.