Skip to Content
MilliporeSigma

114545

Thymol Blue

ACS reagent

Synonym(s):

Thymolsulfonphthalein

Slide 1 of 3
Sign In to View Organizational & Contract Pricing

Select a Size

5 G

$53.40

25 G

$161.00

$53.40

Check Cart for Availability
Request a Bulk Order
Ships Every 4 weeks

About This Item

Empirical Formula (Hill Notation):
C27H30O5S
CAS Number:
76-61-9
Molecular Weight:
466.59
Beilstein/REAXYS Number:
368036
EC Number:
200-973-3
MDL number:
MFCD00005869
UNSPSC Code:
12171500
PubChem Substance ID:
24847181
NACRES:
NA.47

Key Documents

View All Documentation

Skip To

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

grade

ACS reagent

Quality Level

200

form

powder

clarity of soln

passes test

technique(s)

titration: suitable

visual transition interval

1.2-2.8, red to yellow(acid range)
1.2-2.8, red to yellow
8.0-9.2, yellow to blue(alkaline range)
8.0-9.2, yellow to blue

mp

221-224 °C (dec.) (lit.)

solubility

ethanol: 0.1%, clear

density

0.979 g/cm3

λmax

376 nm (2nd)
594 nm

ε (extinction coefficient)

≥12000 at 298-302 nm in 0.1 M NaOH at 0.01 g/L

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

CC(C)c1cc(c(C)cc1O)C2(OS(=O)(=O)c3ccccc23)c4cc(C(C)C)c(O)cc4C

InChI

1S/C27H30O5S/c1-15(2)19-13-22(17(5)11-24(19)28)27(21-9-7-8-10-26(21)33(30,31)32-27)23-14-20(16(3)4)25(29)12-18(23)6/h7-16,28-29H,1-6H3

InChI key

PRZSXZWFJHEZBJ-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Related Categories

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
1.0817630-2270861367
Thymol Blue ACS reagent

Sigma-Aldrich

114545

Thymol Blue

Thymol blue indicator ACS, Reag. Ph Eur

Supelco

1.08176

Thymol blue

Thymol Blue JIS special grade

Sigma-Aldrich

30-2270

Thymol Blue

Thymol Blue sodium salt ACS reagent, Dye content 95 %

Sigma-Aldrich

861367

Thymol Blue sodium salt

grade

ACS reagent

grade

ACS reagent

grade

JIS special grade

grade

ACS reagent

technique(s)

titration: suitable

technique(s)

-

technique(s)

-

technique(s)

-

solubility

ethanol: 0.1%, clear

solubility

-

solubility

-

solubility

-

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

-

application(s)

-

application(s)

diagnostic assay manufacturing
hematology
histology

form

powder

form

solid

form

solid

form

powder or crystals

Quality Level

200

Quality Level

200

Quality Level

-

Quality Level

200

General description

Thymol Blue is a sulfonephthalein dye. It is also known as thymolsulfonphthalein.

Application

Thymol Blue has been used for the in situ spectrophotometric pH measurement.

Biochem/physiol Actions

Thymol Blue is a pH indicator, which is yellow/orange at low pH and blue in color at high pH.[1]

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
0000517605
0000517605
0000496462
0000496462
0000448123

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

Global stability for convection induced by absorption of radiation.
Straughan B
Dynamics of atmospheres and oceans, 35, 351-361 (2002)
N Gayathri et al.
Journal of AOAC International, 84(4), 1065-1069 (2001-08-15)
A simple and sensitive spectrophotometric method was developed for the determination of trace amounts of sulfur dioxide. The method is based on the reaction of SO2 with a known excess of ICI as the oxidant. The unreacted ICI iodinates thymol
P Balderas-Hernández et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 66(1), 68-73 (2006-07-11)
This paper presents the results concerning the determination of the formation constants of the complexes between thymol blue, TB, and the metal ions Pb(II) or Cd(II). The experimental procedure was carried out in the presence of a nitrogen atmosphere at
Shangjie Xu et al.
Macromolecular bioscience, 7(8), 968-974 (2007-08-01)
A simple general synthetic concept to build dendritic core-shell architectures with pH-labile linkers based on hyperbranched PEI cores and biocompatible PEG shells is presented. Using these dendritic core-shell architectures as nanocarriers, the encapsulation and transport of polar dyes of different
Yong-Doo Park et al.
Journal of protein chemistry, 22(5), 473-480 (2003-12-24)
Sensitive assay methods for tyrosinase are essential not only for the understanding the process of pigment production but also for the development of effective inhibitors of tyrosinase. To develop an efficient assay method, we applied thymol blue to reaction mixtures.
View All Related Papers

Questions

Reviews

No rating value

Active Filters

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