Tropaeolin OO, Indicator Grade, Certified, 25g

Tropaeolin OO, Indicator Grade, Certified, 25g
For Research & Development
Not for drug, human, animal, or food use

Certificate of Analysis:
Appearance yellowish-orange powder
Absorptivity 1% 1cm at pH 1.2 at Lambda max. 527nm 968
Absorptivity 1% 1cm at pH 2.7 at Lambda max. 448nm 643
Identify by IR spectrum
Loss on drying 4.6%  
Melting point >300ºC
Suitability suitable as a Andrade’s and pH indicator, a biological stain
Visual transition interval pH 1.2 [red] pH 2.7 [yellow]

CAS: 554-73-4

FORMULA: C18H14N3NaO3S