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76-59-5 - Bromothymol Blue - Bromthymol Blue - A17746 - Alfa Aesar

A17746 Bromothymol Blue

CAS Number
76-59-5
Synonyms
Bromthymol Blue

Size Price ($) Quantity Availability
10g 29.40
50g 113.00
250g 412.00
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Bromothymol Blue

MDL
MFCD00005872
EINECS
200-971-2

Chemical Properties

Formula
C27H28Br2O5S
Formula Weight
624.39
Melting point
200-202°
Solubility
Soluble in ethanol, ether and alkalis. Slightly soluble in water.

Applications

Bromothymol Blue is a pH indicator used for measuring pH around 7 in pools and fish tanks. It operates in the pH range 6.0 to 7.6 due to the presence of an electron withdrawing and donating groups like bromine atoms and alkyl substitutents respectively. In the laboratory, it is used as a biological slide stain as well as used in obstetrics for detecting premature rupture of membranes. Further, it is used for the observation of photosynthetic activities and a respiratory indicator. In addition to this, it is used to define cell walls or nuclei under the microscope.

Notes

Incompatible with strong oxidizing agents.

Literature References

Acid-base indicator: pH 6.0 - 7.6.

Suwantarat, N.; Watkins, T.; Lee, R.; Carroll, K. C.; Zhang, S. X. False-positive reaction of L-canavanine glycine bromothymol blue medium with Candida famata. J. Clin. Microbiol. 2014, 52 (4), 1308-1309.

El-Nahhal, I. M.; Zourab, S. M.; Kodeh, F. S.; Abdelsalam, F. H. Sol-gel encapsulation of bromothymol blue pH indicator in presence of Gemini 12-2-12 surfactant. J. Sol-Gel Sci. Technol. 2014, 71 (1), 16-23.

Other References

Merck
14,1445
Beilstein
373934
Harmonized Tariff Code
2914.70
TSCA
Yes
RTECS
SJ7450000

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