Skip to Content
MilliporeSigma
All Photos(2)

Key Documents

View All Documentation

205478

Sigma-Aldrich

Bromoxylenol Blue

indicator grade, Dye content 95 %

Synonym(s):

3′,3″-Dibromo-p-xylenolsulfonphthalein

Sign Into View Organizational & Contract Pricing
All Photos(2)

About This Item

Empirical Formula (Hill Notation):
C23H20Br2O5S
CAS Number:
40070-59-5
Molecular Weight:
568.27
Beilstein/REAXYS Number:
369060
EC Number:
254-780-4
MDL number:
MFCD00005873
UNSPSC Code:
12171500
PubChem Substance ID:
24852334
NACRES:
NA.47

grade

indicator grade

Quality Level

200

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

Looking for similar products? Visit Product Comparison Guide

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.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
SHBS1183
SHBR3785
SHBQ9916
SHBR2710
SHBQ5517

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Jun-Ming Chen et al.
Oncology letters, 15(4), 5250-5256 (2018-03-20)
Steviol is the colonic metabolite of the natural sweetener steviol glycosides. It does not diffuse to the blood and the half maximal inhibitory concentration of steviol is longer compared with that of current chemotherapy agents, including 5-fluorouracil and doxorubicin. The
Pablo García-Manrique et al.
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

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service