Is Bromothymol Blue vegetarian?
Bromothymol Blue
Bromothymol Blue (BTB) is a synthetic pH indicator dye commonly used to measure substances with near-neutral pH, including the detection of carbonic acid in liquids. It is typically sold as the sodium salt of the acid indicator.
| Also known as | 3',3''-Dibromothymolsulfonphthalein, BROMOTHYMOL BLUE, BTB, Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis[2-bromo-3-methyl-6-(1-methylethyl)-, S,S-dioxide |
|---|---|
| INCI name | Bromothymol Blue |
| CAS number | 76-59-5 |
| EC number | 200-971-2 |
| CosIng ID | 32229 |
| Last reviewed | 3 June 2026 |
An ingredient is considered vegetarian if it avoids components derived from killing an animal.
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