Applications
It is used as photographic developer for silver bromide-gelatin plates. It imparts greenish-brown tint to optical glass (sunglasses, windshields, railroad car windows), for decorative glassware, pigment for plastics, paints and lacquers. It acts as reagent.

Solubility
Soluble in water. Insoluble in acetic acid.

Notes
Store at room temperature. It is not intended for diagnostic and therapeutic purposes. Avoid contamination with oxidizing agents.