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Bromothymol Blue Powder AR 25g

R411,05

Bromothymol Blue AR is a pH indicator, mostly used in applications that require measuring substances that would have a relatively neutral pH.

Description

Chemical NameBromothymol Blue
Chemical GradeAR
Chemical FormulaC₂₇H₂₈Br₂O₅S
Chemical Weight624,38 g/mol
CAS No76-59-5
Solubility in WaterSlightly soluble
AppearanceBrown coloured powder
Melting PointMelting Point/Range: 200 – 202 °C – lit.

Dye content (%)> 95
Absorptivity (E1% in 1cm cell at λ1 max) pH 5.8260 – 300
Absorptivity (E1% in 1cm cell at λ2 max) pH 7.6470 – 520
Loss on Drying (110ºC) (%)< 1.0
Solubility at 0.1% (95% Ethanol)Clear solution
Transition rangepH 5.8 – 7.6 (Yellow – Blue)
Wavelength of maximum absorption (pH 5.8) λ1 max430.5 nm
Wavelength of maximum absorption (pH 7.6) λ2 max616 nm

Additional information

Weight0,6 kg
Dimensions15 × 10 × 15 cm

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