CLEAPSS Supporting practical science and technology
PP124 - Testing for organic functional groups: manganate(VII) test for alcohols and carbonyls
Many 16+ curricula include testing for organic functional groups. Qualitative distinction of primary/secondary alcohols from tertiary alcohols, and aldehydes from ketones is commonly carried out with acidified dichromate(VI). This practical procedure details the use of acidified manganate(VII) as a less hazardous alternative.