Bromothymol blue is a chemical compound that is commonly used as a pH indicator. It is a dye that changes color depending on the acidity or alkalinity of a solution. In this article, we will explore the definition, meaning, and origin of bromothymol blue, as well as its associations, synonyms, and antonyms.
Definitions
Bromothymol blue is a pH indicator that is commonly used in chemistry and biology experiments. It is a yellow-green powder that turns blue in alkaline solutions and yellow in acidic solutions. The pH range for bromothymol blue is between 6.0 and 7.6.
Origin
Bromothymol blue was first synthesized in 1906 by a German chemist named Leonid Breinl. It was initially used as a dye for textiles and paper, but its pH-indicating properties were discovered soon after. Today, bromothymol blue is widely used in laboratories around the world.
Meaning in different dictionaries
According to the Merriam-Webster dictionary, bromothymol blue is “a greenish-yellow crystalline compound C27H28Br2O5S used as an acid-base indicator and as a biological stain”. The Oxford English Dictionary defines it as “a synthetic dye used as a pH indicator and a biological stain”.
Associations
Bromothymol blue is commonly associated with chemistry and biology experiments, as well as water testing. It is also used in the medical field as a diagnostic tool for respiratory function tests.
Synonyms
Some synonyms for bromothymol blue include BTB, bromothymol sulfone phthalein, and bromothymol blue sodium salt.
Antonyms
As a chemical compound, bromothymol blue does not have any antonyms.
The same root words
The root words in bromothymol blue are “bromo” (meaning “bromine”), “thymol” (a type of aromatic compound), and “blue” (referring to the color change of the dye). Other compounds that contain the same root words include bromothymol violet and bromocresol green.
Example Sentences
- The students used bromothymol blue to determine the pH of different solutions.
- The water testing kit included a vial of bromothymol blue to test for alkalinity.
- The doctor used a solution of bromothymol blue to test the patient’s lung function.