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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 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

Additional information

Weight 0,6 kg
Dimensions 15 × 10 × 15 cm

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