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Sodium bismuthate is the inorganic compound with the formula NaBiO3. It is a yellowish solid that is a strong oxidiser. It is not soluble in cold water, which is sometimes convenient since the reagent can be easily removed after the reaction.
S 1695 (OTTO) Sodium bismuthate Cas 12232-99-4 - used as a sensitive chromogenic reagent in a spectrophotometric assay for the determination of epinephrine and norepinephrine.