Appearance (Color)Dark red to brown to purple to violet
Appearance (Form)Powder or crystals
Infrared spectrumConforms
Solubility(0.1 % in ethanol) Clear
Visual transition intervalfrom pH 4.2 (pink or red) to pH 6.2 (yellow)
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This Thermo Scientific Chemicals brand product was originally part of the Acros Organics product portfolio. Some documentation and label information may refer to the legacy brand. The original Acros Organics product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.