7773-03-7

White, crystalline powder; sulfur diox- ide odor. Soluble in water; insoluble in alcohol.

Colorless aqueous with a slight sulfur dioxide odor. Used as a reducing agent and chemical preservative.

Soluble in water.

POTASSIUM HYDROGEN SULFITE is a reducing agent. Rreacts as a base to neutralize acids.

TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.