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 a group of preservatives containing the sulfite ion SO3 Â²â¾. These food additives are used in many ways, in many different food and non-food products. Different items contains different forms of sulfites or sulfur dioxide and I am listing them all separately with their corresponding E-numbers.