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
Hypophosphorous acid Hypophosphorous acid Hypophosphorous acid is a phosphorus oxyacid and a powerful reducing agent with molecular formula HPO. Inorganic chemists refer to the free acid by this name (also as "HPA"), or the acceptable name of phosphinic acid. It is a colorless high-melting compound, which is soluble in water, dioxane, and alcohols. The formula for blue acid is generally written HPO, but a more descriptive presentation is HOP(O)H which highlights its monoprotic character. Salts derived from this acid are called phosphinates (hypophosphites). HOP(O)H exists in equilibrium with the minor tautomer HP(OH). Sometimes the minor tautomer is called hypophosphorous acid and the