Skip to Content
Merck
All Photos(3)

Key Documents

View All Documentation

861367

Sigma-Aldrich

Thymol Blue sodium salt

ACS reagent, Dye content 95 %

Synonym(s):

Thymolsulfonphthalein sodium salt

Sign Into View Organizational & Contract Pricing
All Photos(3)

About This Item

Empirical Formula (Hill Notation):
C27H29NaO5S
CAS Number:
62625-21-2
Molecular Weight:
488.57
Beilstein:
3861515
EC Number:
263-650-6
MDL number:
MFCD00151093
UNSPSC Code:
12171500
PubChem Substance ID:
24888538
NACRES:
NA.47

grade

ACS reagent

Quality Level

200

form

powder or crystals

composition

Dye content, 95%

clarity of soln

passes test

visual transition interval

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

mp

283-285 °C (dec.) (lit.)

λmax

378 nm (2nd)
590 nm

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

[Na+].CC(C)c1cc(c(C)cc1O)C2(OS(=O)(=O)c3ccccc23)c4cc(C(C)C)c([O-])cc4C

InChI

1S/C27H30O5S.Na/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;/q;+1/p-1

InChI key

BAVBEHWEOJMHDS-UHFFFAOYSA-M

Looking for similar products? Visit Product Comparison Guide

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
SHBQ3241
MKCL3532
MKCF4131
MKBX7879V
MKBR0446V

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

Douglas R Macfarlane et al.
Chemical communications (Cambridge, England), 46(41), 7703-7705 (2010-09-28)
We describe hydrated ionic liquids which have an intrinsic proton buffering action and hence an ability to control proton activity in an ionic medium.
N Takai et al.
Artificial organs, 15(2), 86-89 (1991-04-01)
An optical fiber sensor utilizing Thymol blue and an ion-exchange resin complex in a cellulose acetate membrane was developed. By monitoring several different chromophores of Thymol blue, the sensor could measure the pH of the solution from 1.0 to 12.0
Elodie Verhaeghe et al.
Analytical biochemistry, 379(1), 60-65 (2008-05-22)
The standard assay for iodoperoxidase activity is based on the spectrophotometric detection of triiodide formed during the enzymatic reaction. However, chemical instability of I3- has limited the method to high iodide concentrations and acidic conditions. Here we describe a simple
Ali A Ensafi et al.
Journal of hazardous materials, 148(1-2), 319-325 (2007-03-30)
An on-line flow system was used to develop a selective and efficient on-line sorbent extraction preconcentration system for cadmium. The method is based on adsorption of cadmium ions onto the activated carbon modified with methyl thymol blue. Then the adsorbed
Kanakapura Basavaiah et al.
Anais da Academia Brasileira de Ciencias, 80(2), 253-262 (2008-05-29)
Four sensitive and rapid methods for the determination of stavudine (STV) in bulk drug and in dosage forms were developed and optimized. In titrimetry, aqueous solution of STV was treated with a known excess of bromate-bromide in HCl medium followed
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