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Chemical Name | Bromothymol Blue |
Chemical Grade | AR |
Chemical Formula | C₂₇H₂₈Br₂O₅S |
Chemical Weight | 624,38 g/mol |
CAS No | 76-59-5 |
Solubility in Water | Slightly soluble |
Appearance | Brown coloured powder |
Melting Point | Melting Point/Range: 200 – 202 °C – lit. |
Dye content (%) | > 95 |
Absorptivity (E1% in 1cm cell at λ1 max) pH 5.8 | 260 – 300 |
Absorptivity (E1% in 1cm cell at λ2 max) pH 7.6 | 470 – 520 |
Loss on Drying (110ºC) (%) | < 1.0 |
Solubility at 0.1% (95% Ethanol) | Clear solution |
Transition range | pH 5.8 – 7.6 (Yellow – Blue) |
Wavelength of maximum absorption (pH 5.8) λ1 max | 430.5 nm |
Wavelength of maximum absorption (pH 7.6) λ2 max | 616 nm |
Weight | 0,6 kg |
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Dimensions | 15 × 10 × 15 cm |
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