CAS NO 34722-90-2 Bromothymol Blue sodium salt

Product Name:

BTB

Synonyms:

3',3''-Dibromothymolsulphonephthalein, sodium salt;Bromothymol Blue, water soluble p.a.;Bromothymol Blue sodium salt, 0.04% w/v aq. soln.;Bromothymol Blue, powder, sodium salt;Bromothymol Blue, Reagent;Bromothymol;Sodium 2-[(Z)-(3-bromo-4-hydroxy-2-methyl-5-propan-2-ylphenyl)-(3-bromo-2-methyl-4-oxo-5-propan-2-yl-1-cyclohexa-2,5-dienylidene)methyl]benzenesulfonate;Sodium alpha-(3-bromo-5-isopropyl-4-oxo-2-methyl-2,5-cyclohexadienylidene)-2-(3-bromo-4-hydroxy-5-isopropyl-2-methylphenyl)toluenesulfonate

CAS:

34722-90-2

MF:

C27H29Br2NaO5S

MW:

648.38

EINECS:

252-169-7

Product Categories:

marker;B;Analytical Chemistry;Indicator (pH);Stains and Dyes;Stains&Dyes, A to;Organics;pH Indicators;Sulfonephthalein;AR

Mol File:

34722-90-2.mol

Melting point

200-202°C

density

0.990

storage temp.

room temp

solubility

Solubility Soluble in water, ethanol

form

Powder

pka

7.0, 7.1(at 25℃)

color

Orange-brown to dark green

Odor

Characteristic odour

PH Range

Yellow (6.0) to blue (7.6)

Water Solubility

SOLUBLE

λmax

615nm, 392nm

BRN

6887926

Stability:

Stable. Incompatible with strong oxidizing agents.

Major Application

Lithium battery, textiles, antagonists

CAS DataBase Reference

34722-90-2(CAS DataBase Reference)

EPA Substance Registry System

Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[2-bromo-3-methyl-6-(1-methylethyl)-, monosodium salt (34722-90-2)

Chemical Properties

Dark greenish gold crystalline powder

Uses

It is employed as a pH indicator which is yellow at pH ? 6.0 and blue at pH ? 7.6. It finds its major application in lithium battery, textiles and antagonists.

Uses

Suitable for use:

• In preparations of pH indicator solutions

• In phospholipid staining on tissues and cells prepared on microscopy slides

Uses

Bromothymol Blue sodium salt has been used as a pH indicator in the yeast growth media (YPD, yeast extract peptone dextrose).

General Description

Bromothymol Blue is a sulfonated hydroxyquinone in acidic solutions. In alkaline solutions, it is present as a dianion that is blue with a larger conjugated system than the yellow hydroxyquinone. Both forms are lipophilic. It is also known as bromthymol blue or dibromothymolsulfonphthalein.

Biochem/physiol Actions

Bromothymol Blue is a pH-indicator. It is also used for carbonic anhydrase assay due to the conversion of carbon dioxide to bicarbonate.