Conservation and restoration of paintings

Saponification is a process of cleaving esters into carboxylate salts and alcohols by the action of aqueous alkali. Typically aqueous sodium hydroxide solutions are used. It is an important type of alkaline hydrolysis. When the carboxylate is a long chain, its salt is called a soap. The saponification of ethyl acetate gives sodium acetate and ethanol:

300px|thumb|upright=1.4|Craquelure in the Mona Lisa, with a typical "Italian" pattern of small rectangular blocks thumb|Age craquelure in pottery

fresco notoriously damaged in restoration

20th-century art conservation project

November 1966 flood of the Arno River

Marouflage is a technique for affixing a painted canvas (intended as a mural) to a wall, using an adhesive that hardens as it dries, such as plaster or cement.

conserving an unstable painting on a deteriorated panel by transferring it to canvas or a new panel

Process for removal of wall paintings

mural painting technique that uses a water glass based paint

conservation of heritage places