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A17746 Bromothymol Blue

CAS Number
76-59-5
Synonyms
Bromthymol Blue

Stock No. Size Price ($) Quantity Availability
A17746-09 10g 30.90
A17746-18 50g 118.00
A17746-30 250g 433.00
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Bromothymol Blue

MDL
MFCD00005872
EINECS
200-971-2

Chemical Properties

Formula
C27H28Br2O5S
Formula Weight
624.39
Melting point
200-202°
Storage & Sensitivity
Ambient temperatures.
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
2914.79
TSCA
Yes
RTECS
SJ7450000

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