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Merck
CN

205478

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:
40070-59-5
Molecular Weight:
568.27
UNSPSC Code:
12171500
NACRES:
NA.47
PubChem Substance ID:
24852334
EC Number:
254-780-4
Beilstein/REAXYS Number:
369060
MDL number:
MFCD00005873

Key Documents

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Product Name

Bromoxylenol Blue, indicator grade, Dye content 95 %

InChI key

MRDOFVRMTNWMDA-UHFFFAOYSA-N

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

SMILES string

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

grade

indicator grade

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

Quality Level

200

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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.

General description

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

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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Certificates of Analysis (COA)

Lot/Batch Number
SHBS8545
SHBS3714
SHBS1183
SHBR3785
SHBQ9916

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Colloids and surfaces. B, Biointerfaces, 182, 110378-110378 (2019-07-29)
The new roles of vesicular systems in advanced biomedical, analytical and food science applications demand novel preparation processes designed to reach the new standards. Particle size and monodispersity have become essential properties to control. In this work, key parameters, involved

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