sulphurous acid

noun

1. an unstable acid produced when sulphur dioxide dissolves in water: used as a preservative for food and a bleaching agent. Formula: H 2 SO 3 Systematic namesulphuric(IV) acid

Example Sentences

Thus far the value of the products obtained by absorption of sulphurous acid has not been equal to the cost of producing them.

From Project Gutenberg

Sulphurous acid can fulfil in this instance a double function, viz.

From Project Gutenberg

The gum is dissolved in water, and sulphurous acid gas passed through the solution.

From Project Gutenberg

Hence the necessity of having a little free sulphurous acid in each tube.

From Project Gutenberg

The colour, however, is not removed by boiling or by sulphurous acid.

From Project Gutenberg