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Bromothymol Blue

Catalog No. 114413 Name Sigma Aldrich
CAS Number 76-59-5 Website http://www.sigmaaldrich.com
M. F. C27H28Br2O5S Telephone 1-800-521-8956
M. W. 624.38122 Fax
Purity Email
Storage Chembase ID: 102321

SYNONYMS

Title
溴百里酚蓝
IUPAC name
3,3-bis[3-bromo-4-hydroxy-2-methyl-5-(propan-2-yl)phenyl]-3H-2,1λ6-benzoxathiole-1,1-dione
IUPAC Traditional name
bromothymol blue
Synonyms
3′,3″-二溴百里酚磺酞
3′,3″-Dibromothymolsulfonphthalein

DATABASE IDS

MDL Number MFCD00005872
Beilstein Number 373934
CAS Number 76-59-5
EC Number 200-971-2
PubChem SID 24847171

PROPERTIES

Compostion Dye content, 95%
Empirical Formula (Hill Notation) C27H28Br2O5S
Grade ACS reagent
Visual Transition Interval 6.0 - 7.6, yellow to blue (passes test)
Absorption Wavelength λmax 420 nm
Melting Point 200-202 °C(lit.)
MSDS Link Download
Personal Protective Equipment Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
German water hazard class 3

DETAILS

Description (English)
Packaging
5, 25 g in glass bottle
Application
Bromothymol Blue (BTB) is a pH indicator (pKa approx. 7.1) that is used as a biological slide vital stain to define cell walls or nuclei under the microscope. BTB is also a component of several bacterial growth and detection substrates such as cystine lactose electrolyte deficient (CLED/BROLACIN); polymyxin pyruvate egg yolk mannitol bromothymol blue (PEMBA) and MacConkey agar.
Description (简体中文)
包装
5, 25 g in glass bottle
Application
Bromothymol Blue (BTB) is a pH indicator (pKa approx. 7.1) that is used as a biological slide vital stain to define cell walls or nuclei under the microscope. BTB is also a component of several bacterial growth and detection substrates such as cystine lactose electrolyte deficient (CLED/BROLACIN); polymyxin pyruvate egg yolk mannitol bromothymol blue (PEMBA) and MacConkey agar.

REFERENCES