arsenious

Arsenious acid is more frequently used than manganese for the correction of the iron impurity.

Arsenious oxide is also used as a chemical reagent in glass making and in the dye industry.

Arsenious acid again has been respired in the form of vapour.

As Arsenious anhydride:—Obtained in a weighed capsule or tube, either by the crystallisation or sublimation test.

Uses, &c. Arsenious anhydride and its compounds are extensively employed in the arts and medicine.