Dictionary entry overview: What does isle mean? â¢ ISLE (noun) The noun ISLE has 1 sense: 1. a small island Familiarity information: ISLE used as a noun is very rare.
The sulfate ion is SO42- The sulfite ion is SO32- and is more basic that sulfate.
Sulfites are inorganic salts that have antioxidant and preservative properties. Sulfites have been used as a food additive since 1664 and have been approved for use in the United States for more than a century.ntroduction. If you have a strong allergic reaction to sulfites you may already know some ways to avoid the substances. However, even with today's technology, food recalls due to undeclared sulfite (as a food ingredient) continue to occur in the United States.