Bromothymol blue (also known as bromothymol sulfone phthalein and BTB) is a pH indicator. It is mostly used in applications that require measuring substances that would have a relatively neutral pH (near …

Bromothymol blue is a member of the class of 2,1-benzoxathioles that is 2,1-benzoxathiole 1,1-dioxide in which both of the hydrogens at position 3 have been substituted by 3-bromo-4-hydroxy-5-isopropyl …

Aug 20, 2025 · Bromothymol blue, also known as BTB, is a chemical compound primarily classified as a dye and a pH indicator. Its molecular formula is C27H28Br2O5S, indicating a complex structure that …

Bromothymol blue is an acid-base indicator with a pKa of 7.2. It is blue in solutions with a pH ≥ 7.6, yellow in pH ≤ 6.0, and greenish in between. A person’s breath contains carbon dioxide which reacts …

Bromothymol blue is a pH indicator dye that is commonly used in acid-base titrations to determine the endpoint of the reaction. It is a weak acid that changes color in response to changes in pH, making it …

Jun 4, 2025 · Bromothymol blue, also known as BTB, is a pH indicator dye derived from thymol. It belongs to the family of triphenylmethane dyes and is most recognized for its color-changing …

Nov 23, 2023 · Bromothymol blue (IUPAC: 4,4′- (1,1-Dioxido-3H-2,1-benzoxathiole-3,3-diyl)bis (2-bromo-6-isopropyl-3-methylphenol)) is a pH indicator, commonly used for determining the neutral pH …

In obstetrics, bromothymol is used to detect premature membrane rupture. Typically, amniotic fluid has a pH > 7.2, so bromothymol turns blue when it comes into contact with amnion – leaking fluid.

Bromothymol can be used in obstetrics for detecting the premature rupture of membranes. Typically, the amniotic fluid has a pH value of greater than 7.2, and the bromothymol will thus turn blue when made …

Bromothymol blue (BTB) is a sulfonephthalein pH indicator that undergoes a distinct color change in response to shifts in hydrogen ion concentration. This property makes it an invaluable tool in …