Bromopyrogallol red

Structural formula
General
Surname	Bromopyrogallol red
other names	2 ′, 7′-dibromo-1,1-dioxospiro [benzo [ c ] oxathiol-3,9′-xanthene] -3 ′, 4 ′, 5 ′, 6′-tetrol ( IUPAC ) 3 ', 3' '- dibromopyrogallol sulfonphthalein
Molecular formula	C 19 H 10 Br 2 O 8 S
Brief description	dark brown solid
External identifiers / databases
CAS number 16574-43-9 EC number 240-632-6 ECHA InfoCard 100.036.923 PubChem 85495 ChemSpider 77105 Wikidata Q926954
properties
Molar mass	558.15 g mol −1
Physical state	firmly
Melting point	> 300 ° C
safety instructions
GHS labeling of hazardous substances 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 .

Bromopyrogallol red is a triphenylmethane dye and belongs to the group of sulfonphthaleins. It is represented by bromination of pyrogallol red .

Properties and use

Bromopyrogallol red serves u. a. for the photometric determination of tin .

Individual evidence

1. ↑ ^{a b c d} data sheet bromopyrogallol red from Sigma-Aldrich , accessed on December 10, 2012 ( PDF ).