Bromothymol blue (BTB) is often used in electrophoresis to estimate the mobility of the electrophoretic front.
BTB is also a biological stain and pH indicator; yellow at pH 6.0, green at pH 7.0, and blue at pH 7.6.
Synonyms: BTB; 3′,3′′-dibromothymolsulfonephthalein sodium salt; Bromothymol Blue sodium salt; Bromothymol Sulfone Phthalein
| Solubility | Water |
| Physical Form | Solid |
| Product Number | B1714 |
| CAS Number | 34722-90-2 |
| Formula Weight | 646.37 |
| Formula | C27H27Br2O5SNa |
| Synonyms | BTB; 3′,3′′-dibromothymolsulfonephthalein sodium salt; Bromthymol Blue sodium salt; Bromothymol Sulfone Phthalein |
| Storage Temp. | Room Temperature |
| Tariff Code | 2914.70.4000 |
