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Chemodex
Bromothymol Blue sodium salt
As low as
45
CHF
CHF 45.00
In stock
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CDX-B0502-G0055 gCHF 45.00
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Specifications / Handling
| Product Details | |
|---|---|
| Synonyms | BTB; 3',3''-dibromothymolsulfonephthalein sodium salt; Bromthymol blue sodium salt |
| Product Type | Chemical |
| Properties | |
| Formula | C27H27Br2NaO5S |
| MW | 646.36 |
| CAS | 34722-90-2 |
| Source/Host Chemicals | Synthetic |
| Purity Chemicals | ≥90% (Dye content) |
| Appearance | Orange, green to brown powder. |
| Solubility | Soluble in DMSO, water or ethanol. |
| Declaration | Manufactured by Chemodex. |
| Other Product Data |
Click here for Original Manufacturer Product Datasheet |
| InChi Key | NMKFVGALBGZKGW-FKWCIMQXSA-M |
| Smiles | [Na+].CC(C)c1cc(c(C)c(Br)c1O)C(=C2\C=C(C(C)C)C(=O)C(Br)=C2C)\c3ccccc3S([O-])(=O)=O |
| Shipping and Handling | |
| Shipping | AMBIENT |
| Short Term Storage | +4°C |
| Long Term Storage | -20°C |
| Handling Advice | Protect from light and moisture. |
| Use/Stability | Stable for at least 2 years after receipt when stored at -20°C. |
| Documents | |
| Product Specification Sheet | |
| Datasheet |
 Download PDF |
Scientific Background Information
Product Description
Bromothymol blue sodium salt is a pH indicator widely used in titrations, enzyme assays and biological buffer systems. It exhibits a distinct color transition from yellow (acidic) to blue (basic) over a pH range of 6.0-7.6, making it ideal for monitoring near-neutral solutions. Spectral data: λmax=427nm (acid form) and λmax=602nm (basic form). Enables reliable spectrophotometric pH determination. Has been used for freshwater pH measurements over a broad range of buffer intensities.
Product-specific References
(1) J.B. Jackson & A.R. Crofts; Eur. J. Biochem. 10, 226 (1969) | (2) C.K. Kurup & D.R. Sanadi; Biochim. Biophys. Acta. 189, 300 (1969) | (3) Z. Aleksandrowicz & J. Swierczynski; FEBS Lett. 20, 364 (1972) | (4) M.R. DuPree & G. Wilcox; J. Clin. Microbiol. 6, 343 (1977) | (5) R.J. Marschke & B.J. Kitchen; J. Dairy Sci. 68, 1263 (1985) | (6) J.B. Puschett, et al.; Talanta 38, 335 (1991) | (7) G.P. Gorbenko; Biochim. Biophys. Acta 1370, 107 (1998) | (8) L. Cao, et al.; Polymers 10, 709 (2018) | (9) N. Ali, et al.; Int. J. Biol. Macromol. 281, 136419 (2024)