an improved method of deacidifying books , imaged paper and other imaged materials having a cellulose base wherein , for a sufficient time to raise the ph of the materials , the materials are treated with alkaline particles of a basic metal oxide , hydroxide or salt dispersed in an inert perflourinated carrier , preferably selected from the group consisting of perfluoropolyoxyether , perfluoromorpholine and combinations thereof . perfluoropolyoxyether alkanoic acid is added as a surfactant . alternatively , when perfluoromorpholine is the carrier of choice , the surfactant may instead be potassium fluoroalkyl carboxylate .