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Description
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 7). A common use is for measuring the presence of carbonic acid in a liquid. It is typically sold in solid form as the sodium salt of the acid indicator.
Product Technical bulletin
| Product Name : | BROMOTHYMOL BLUE INDICATOR AR/ACS Analyzed on: – 09/09/14 |
| Mol. Formula : | C27H28Br2O5S |
| Mol. Weight : | 624.40 |
| Code no. : | 02350 |
| CAS No. : | 76-59-5 |
| Lot no. : | B120961409 |
| Tests | Specifications | Results |
| Description | Pinkish to Purple colour powder. | Pinkish colour powder. |
| pH Transition (6.0 – 7.6) | Yellow to blue | Yellow to blue |
| Appearance of solution | Passes test | Passes test |
| Loss on drying (110oC) | Max 3.0% | 0.12% |
| Transition range | Passes test | Passes test |
| Sensitivity | Passes test | Passes test |
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