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... that contains 70 percent sym-trioxane and boils at 91°C.Sym-trioxane is obtained by heating a 50–55 percent aqueous solution of formaldehyde with 2 percent sulfuric acid. It decomposes completely into formaldehyde at 150°–180°C. This property permits its use for the production of pure formaldehyde.

(also methanal), CH 2O, the first member of the homologous series of aliphatic aldehydes. A...

n., a linear polymer of formaldehyde; a white, horny crystalline substance with molecular weight...

technological processes in which ionizing radiation is used to change the chemical or physical...