sulphur dioxide

British

noun

Systematic name: sulphur(IV) oxide. a colourless soluble pungent gas produced by burning sulphur. It is both an oxidizing and a reducing agent and is used in the manufacture of sulphuric acid, the preservation of a wide range of foodstuffs ( E220 ), bleaching, and disinfecting. Formula: SO 2

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sulphur dioxide

Activists link the complex and its emissions of particulate matter and sulphur dioxide to an estimated 16,530 premature deaths.

From Barron's ● Feb. 19, 2026

In addition to the danger of the release of toxic sulphur dioxide gas, just being exposed to dust particles from the concentrate can damage a person’s respiratory system.

From BBC ● Aug. 11, 2024

Millions of tonnes of sulphur dioxide would need to be injected to have any impact.

From BBC ● Jul. 20, 2024

Nornickel said smelters in the Arctic city of Norilsk release roughly 1.8 million tonnes of sulphur dioxide emissions annually.

From Reuters ● Oct. 25, 2023

Heated in an ignition tube it yields sulphur dioxide.

From The Elements of Blowpipe Analysis by Getman, Frederick Hutton

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023