Share this entry
sulfurous acid Syllabification: sul·fur·ous ac·id

Definition of sulfurous acid in English:


An unstable weak acid formed when sulfur dioxide dissolves in water. It is used as a reducing and bleaching agent.
  • Chemical formula: H2SO3
Example sentences
  • Common reductants are the active metals, hydrogen, hydrogen sulfide, carbon, carbon monoxide, and sulfurous acid.
  • Sulphur dioxide (which forms sulphurous acid in water) is used for commercial dried fruit.
  • Sorbic acid, a preservative; tartaric acid, a stabiliser; and citric and sulphurous acid - that's sulphur dioxide to you and me - are all regularly added during the wine making process.
Definition of sulfurous acid in:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove adverts and access premium resources