Formic anhydride can be isolated by low-temperature, low-pressure distillation, but decomposes on heating above room temperature. It decomposes into formic acid and carbon monoxide. The decomposition of formic anhydride may be catalyzed by formic acid. Formic anhydride can be detected in the gas-phase reaction of ozone with ethylene. The molecule is planar in the gas phase. Formic anhydride Formic anhydride, also called methanoic anhydride, is an organic compound with the chemical formula and a structural formula of (H(C=O)−)O. It can be viewed as the anhydride of formic acid (HCOOH). Formic anhydride can be obtained by reaction of formyl fluoride with sodium formate
Fatty acid Michel Eugène Chevreul, though he used initially some variant terms, "graisse acide" and "acide huileux" ("acid fat" and "oily acid"). Fatty acids differ by length, often categorized as short to very long. Saturated fatty acids have no C=C double bonds. They have the same formula CH(CH)COOH, with variations in "n". An important saturated fatty acid is stearic acid (n = 16), which when neutralized with lye is the most common form of soap. Unsaturated fatty acids have one or more C=C double bonds. The C=C double bonds can give either "cis" or "trans" isomers. In most naturally occurring unsaturated fatty