0.1% Congo Red Aqueous Solution – Chemical Reagent
by Aldon Corporation

CAS # 7732-18-5 (Water), 573-58-0 (Congo red)

This aqueous solution of lab grade Congo Red can be used as a pH indicator, due to its color changing to blue below pH 3.0. Above a pH of 5.2, it will appear red in color.

This chemical is for laboratory use only, and is not intended for food, drug, or cosmetic Use. It should be kept out of the reach of children. Each bottle of our reagents come standard with a copy of an SDS sheet (an updated version of the discontinued MSDS sheet). If you require a copy of this prior to purchase, please contact us.