Bromopyrogallol red

Bromopyrogallol red
Names
Preferred IUPAC name
2′,7′-Dibromo-3′,4′,5′,6′-tetrahydroxy-1H-1λ6-spiro[[2,1]benzoxathiole-3,9′-xanthene]-1,1-dione
Other names
  • 3,3′-Dibromosulfongallein
  • Dibromopyrogallolsulfonphthalein
  • Dibromopyrogallolsulfonphthaleine
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.036.923 Edit this at Wikidata
EC Number
  • 240-632-6
UNII
  • InChI=1S/C19H10Br2O8S/c20-10-5-8-17(15(24)13(10)22)28-18-9(6-11(21)14(23)16(18)25)19(8)7-3-1-2-4-12(7)30(26,27)29-19/h1-6,22-25H
  • Brc5c(O)c(O)c4Oc1c(O)c(O)c(Br)cc1C3(OS(=O)(=O)c2ccccc23)c4c5
Properties
C19H10Br2O8S
Molar mass 558.15 g·mol−1
Appearance Powder, dark brown [2]
Melting point 300 °C (572 °F; 573 K)
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Not a dangerous substance according to Directive 67/548/EEC
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 0: Exposure under fire conditions would offer no hazard beyond that of ordinary combustible material. E.g. sodium chlorideFlammability 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g. canola oilInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
0
1
0
Safety data sheet (SDS) MSDS
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Bromopyrogallol red is frequently used in analytical chemistry as a reagent for spectrophometric analysis and as an complexometric indicator.

  1. ^ "spiro(3h-2,1-benzoxathiole-3,9'-(9h)xanthene)-3',4',5',6'-tetrol, 2',7'-dibromo-, 1,1-dioxide". ChemSpider. Retrieved 12 April 2013.
  2. ^ "Bromopyrogallol Red". Chemical Book. Retrieved 15 March 2013.