sulfur dioxide


sulfur dioxide

noun

chemistry : a gas that has a strong smell, that is used in many industries, and that contributes to air pollution

Full Definition of SULFUR DIOXIDE

:  a heavy pungent toxic gas SO2 that is easily condensed to a colorless liquid, is used especially in making sulfuric acid, in bleaching, as a preservative, and as a refrigerant, and is a major air pollutant especially in industrial areas

First Known Use of SULFUR DIOXIDE

1869

sulfur dioxide

noun    (Medical Dictionary)

Medical Definition of SULFUR DIOXIDE

: a heavy pungent toxic gas SO2 that is easily condensed to a colorless liquid, is used especially in making sulfuric acid, in bleaching, as a preservative, and as a refrigerant, and is a major air pollutant especially in industrial areas

sulfur dioxide

noun    (Concise Encyclopedia)

Inorganic compound, heavy, colourless, poisonous gas (SO). It has a pungent, irritating odour (the smell of a just-struck match). It occurs in volcanic gases and dissolved in the waters of some warm springs. Huge quantities are made industrially for use as a bleach, as a reducing agent, and as sulfites, which are food preservatives. It is a precursor of the trioxide (SO), used to make sulfuric acid. Sulfur dioxide is formed when sulfur-containing fuels are burned; in the atmosphere it can combine with water vapour to form sulfuric acid, a major component of acid rain.

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