Skip to Content
Merck
CN

114359

Bromocresol Green

ACS reagent, Dye content 95 %

Synonym(s):

BCG; 2,6-dibromo-4-[3-(3,5-dibromo-4-hydroxy-2-methylphenyl)-1,1-dioxo-2,1λ6-benzoxathiol-3-yl]-3-methylphenol

Sign In to View Organizational & Contract Pricing.

Select a Size

About This Item

Empirical Formula (Hill Notation):
C21H14Br4O5S
CAS Number:
76-60-8
Molecular Weight:
698.01
UNSPSC Code:
12171500
NACRES:
NA.47
PubChem Substance ID:
24847166
EC Number:
200-972-8
Beilstein/REAXYS Number:
372527
MDL number:
MFCD00005874

Key Documents

View All Documentation
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

Product Name

Bromocresol Green, ACS reagent, Dye content 95 %

Quality Level

200

storage temp.

room temp

InChI key

FRPHFZCDPYBUAU-UHFFFAOYSA-N

InChI

1S/C21H14Br4O5S/c1-9-12(7-14(22)19(26)17(9)24)21(13-8-15(23)20(27)18(25)10(13)2)11-5-3-4-6-16(11)31(28,29)30-21/h3-8,26-27H,1-2H3

SMILES string

Cc1c(Br)c(O)c(Br)cc1C2(OS(=O)(=O)c3ccccc23)c4cc(Br)c(O)c(Br)c4C

grade

ACS reagent

assay

≥95% (After Oxygen Combustion, silver nitrate titration)

form

powder

composition

Dye content, 95%

visual transition interval

3.8, yellow(passes test)
3.8-5.4, yellow to blue(passes test)
4.5, green
5.4, blue

mp

225 °C (dec.) (lit.)

λmax

423 nm

application(s)

diagnostic assay manufacturing
hematology
histology

Looking for similar products? Visit Product Comparison Guide

Related Categories

Application

Bromocresol green serves as a pH indicator in biology and medicinal experiments.
  • It is used widely as a vital stain to study blood-brain permeability.
  • It has been used in the pH-sensitive colorimetric determination of glutamate decarboxylase activity.
  • It has also been employed in the evaluation of paper-analytical devices for colorimetric analysis of serum samples.
  • It is used as a tracking dye for DNA agarose gel electrophoresis, in protein determinations, and in charge-transfer complexation processes.
  • It is used in TLC for the visualization of compounds with functional groups whose pKa is below 5.0.

General description

Bromocresol Green is a synthetic triphenylmethane dye that is anionic in nature. At pH 3.8-5.4, it changes color from yellow to blue-green, and is therefore, commonly used as a pH indicator.

Storage Class

11 - Combustible Solids

wgk

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
0000520877
0000520877
SHBT1324
0000438815
0000438815

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

Selection of appropriate protein assay method for a paper microfluidics platform
Pokhrel, et al.
practical laboratory medicine, 21 (2020)
Preparation of Chitosan Poly(methacrylate) Composites for Adsorption of Bromocresol Green
Liu, et al.
ACS Omega, 4 (2019)
A high-throughput colorimetric assay to measure the activity of glutamate decarboxylase
Yu, et al.
Enzyme and Microbial Technology, 49 (2011)
Conn?s Biological Stains: A Handbook of Dyes, Stains and Fluorochromes for Use in Biology and Medicine (10th ed.)
Horobin, R. W., & Kiernan, J. A. (Eds.)
Conn?s Biological Stains (2002)
Martina O' Toole et al.
Talanta, 66(5), 1340-1344 (2008-10-31)
A novel inexpensive optical-sensing technique has been developed for colorimetric flow analysis. This sensing system employs two LEDs whereby one is used as the light source and the other as a light detector. The LED used as light detector is
View All Related Papers

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