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205478

Sigma-Aldrich

Bromoxylenol Blue

indicator grade, Dye content 95 %

Synonym(s):

3′,3″-Dibromo-p-xylenolsulfonphthalein

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About This Item

Empirical Formula (Hill Notation):
C23H20Br2O5S
CAS Number:
Molecular Weight:
568.27
Beilstein/REAXYS Number:
369060
EC Number:
MDL number:
UNSPSC Code:
12171500
PubChem Substance ID:
NACRES:
NA.47

grade

indicator grade

Quality Level

form

powder or crystals

composition

Dye content, 95%

technique(s)

titration: suitable

pH

6.0-7.6, yellow to blue

mp

218 °C (dec.) (lit.)

solubility

ethanol: 1 mg/mL, clear

λmax

417 nm

ε (extinction coefficient)

≥16000 at 417-421 nm in methanol at 0.016 g/L

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

Cc1cc(c(C)c(Br)c1O)C2(OS(=O)(=O)c3ccccc23)c4cc(C)c(O)c(Br)c4C

InChI

1S/C23H20Br2O5S/c1-11-9-16(13(3)19(24)21(11)26)23(17-10-12(2)22(27)20(25)14(17)4)15-7-5-6-8-18(15)31(28,29)30-23/h5-10,26-27H,1-4H3

InChI key

MRDOFVRMTNWMDA-UHFFFAOYSA-N

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General description

Bromoxylenol blue (BXB) belongs to the sulfonphthalein family. It is also known as 3′,3′′-dibromo-p-xylenol sulfonphthalein.

Application

Bromoxylenol blue is a pH indicator (for pH ranges 6.0-7.6) that is routinely used in acid-base titrations. It is also used for the photometric determination of carboxylic acid impurities in organic liquids and polymers.

Recent applications of bromoxylenol blue include:
  • Building pH sensors
  • Developing optical sensors for high acidity measurements
  • Synthesizing antifungal activity compounds
  • Determination of drugs
  • In fiber-optic biosensors for the determination and detection of pesticides.

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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