Términos

Amorphous sodium polyphosphate used as water softener (marketed in powdered form as Calgon T and other copyrighted names), sequestering agent, and corrosion inhibitor. In conservation, sodium hexametaphosphate is used in the cleaning of wood, stone, textiles, and ceramics.

Water-soluble anionic surfactant used in detergents and other cleaning products such as toothpaste. In conservation, used in the aqueous cleaning of painted surfaces.

An inorganic compound used in the form of a white crystalline powder used variously as an antioxidant, a disinfectant, and a preservative in foods. In a conservation context, it has been used for removing rust stains from paper.

Colorless, crystalline compound that forms naturally as caliche in mineral deposits, chiefly in Chile and Peru. Sodium nitrate is used in the manufacture of fertilizers, glass, and explosives.

White hygroscopic crystals, the sodium salt of nitrous acid; used in dye manufacture, as a fixative for color photographs, a meat preservative, and as a corrosion inhibitor when applied to steel.

The sodium salt of pentachlorophenol, a soluble white or tan powdered solid which has many applications, among them as herbicide, fungicide, biocide; and preservative for leather, and wood.

White, odorless, water-soluble crystalline powder found in almost all laundry soaps. It is a mild alkaline oxidizing agent which serves to increase detergency. It is also used as a deodorant and antiseptic. Dilute compounds of sodium perborate have been used in the conservation field to remove stains from textiles and other materials.

A colorless, solid, water soluble carbonate perhydrate, sodium percarbonate is a highly concentrated source of anhydrous hydrogen peroxide used as a bleaching agent in many applications including paper and textile conservation.

A super-absorbent polymer, the sodium salt of polyacrylic acid, with broad commercial applications. In a conservation context, it is used as a moisture buffer material for humidity control in museum exhibit cases and in historic structures.

A double salt of sodium bicarbonate and sodium carbonate, forming in white crystalline needles. It is used in the treatment of water for softening or cleaning applications. In conservation, used in solution to stabilize corrosion by removing chlorides and other salts from iron and bronze.

A sodium compound which in its anhydrous form occurs in nature as a chemical precipitate found in the minerals thenardite and mirabilite. It may also be obtained synthetically by mixing sodium chloride and sulfuric acid. As a solid or powder, sodium sulphate is used in the manufacture of various products. In conservation science it is addressed as an agent of salt damage to stone.

A chemical compound with the property of making silver salts water-soluble. This property was discovered by Sir John Herschel in 1819, who recommended it as a fixer in photographic processing. It is also used in conservation practice as a cleaning agent for silver and silver-gilt surfaces, and removing silver chloride from wet-washed paper and wet-washed textiles.

A white, powdery inorganic compound, the sodium salt of the polyphosphate penta-anion. It is manufactured for use as an emulsifier and chelating agent in water softeners and detergents. In conservation it has been used as a sequestering agent for the treatment of excavated copper and bronze objects, a chelating agent in the conservation of paper objects, and as a surfactant in the cleaning of photographs. It has been suspected of contributing to water pollution.

Tipo de asiento tapizado y alargado con un respaldo y dos extremos; usados en primer lugar para sentarse más bien que recostarse. Se diferencia de couche que tiene un respaldo de apoyo y un extremo y se usa para recostarse más bien que para sentarse. El término sofá fue usado por primera vez en Francia a finales del siglo XVII como alternativo de canapé. El concepto sofá y settee eran virtualmente intercambiables en el siglo XX, sin distinción entre ellos, pero por lo general el sofá se encuentra totalmente tapizado

Término de época para sofás de fines del siglo XVIII y principios del siglo XIX que tienen un respaldo en pendiente aguda.

Sofás que se pueden convertir en camas.

Sofás con respaldos altos y brazos con bisagras que pueden ser levantados o inclinados hacia fuera del asiento, toman su nombre de un ejemplar único antiguo en Knole Park, Kent; popular para muebles de campo de lujo en Inglaterra en las décadas de 1920 y 1930.

La parte inferior de una parte o miembro de un edificio (a partir de un alero, techo, escalera, cornisa, o entablamento).

Alfombras que son utilizadas como manteles o para proteger la superficie de una mesa u otro mueble.

The practice of placing soil and turf on the tops of historic walls as a preservation strategy. Traditionally, “hard caps” of cement have been used, but are not as effective in extreme weather, especially harsh frosts.