(indicator (pH 4.2-6.2))
Appearance
Infrared spectrometry Conforms
solubility in water clear(0.1% in water)
pHvisual transition interval pH 4.2 (red) to pH 6.2 (yellow)
Grade ACS
(ACS reagent, 95 %)
Appearance Red brown powder
Infrared spectrometry Conforms
Dye content, 95%
solubility in water clear(0.1% in water)
pHvisual transition interval pH 4.2 (red) to pH 6.2 (yellow)
λ 430 - 440 nm
c = 0.01 g/l; Water
Extinction Coefficient ≥17000
λ 256 - 260 nm
Extinction Coefficient ≥8000
Visual Transition Interval pH 4.2 Pink
Visual Transition Interval pH 5.5 Orange
Visual Transition Interval pH 6.2 Yellow
pHvisual transition interval pH 4.2 (red) to pH 6.2 (yellow)
