For the animal behavior of rolling in dust, see sand bathing.
A sand bath is a common piece of laboratory equipment made from a container filled with heated sand. It is used to evenly heat another container, most often during a chemical reaction.
Patent illustration of a sand bath. Cutaway sections show heating elements around the bowl containing sand.
A sand bath is most commonly used in conjunction with a hot plate or heating mantle. A beaker is filled with sand or metal pellets (called shot) and is placed on the plate or mantle. The reaction vessel is then partially covered by sand or pellets. The sand or shot then conducts the heat from the plate to all sides of the reaction vessel.
This technique allows a reaction vessel to be heated throughout with minimal stirring, as opposed to heating the bottom of the vessel and waiting for convection to heat the remainder, cutting down on both the duration of the reaction and the possibility of side reactions that may occur at higher temperatures.
A variation on this theme is the water bath in which the sand is replaced with water. It can be used to keep a reaction vessel at the temperature of boiling water until all water is evaporated (see Standard enthalpy change of vaporization).
Sand baths are one of the oldest known pieces of laboratory equipment, having been used by the alchemists. In Arabic alchemy, a sand bath was known as a qadr.[1] In Latin alchemy, a sand bath was called balneum siccum, balneum cineritium, or balneum arenosum.
sand, bath, animal, behavior, rolling, dust, sand, bathing, sand, bath, common, piece, laboratory, equipment, made, from, container, filled, with, heated, sand, used, evenly, heat, another, container, most, often, during, chemical, reaction, patent, illustrati. For the animal behavior of rolling in dust see sand bathing A sand bath is a common piece of laboratory equipment made from a container filled with heated sand It is used to evenly heat another container most often during a chemical reaction Patent illustration of a sand bath Cutaway sections show heating elements around the bowl containing sand A sand bath is most commonly used in conjunction with a hot plate or heating mantle A beaker is filled with sand or metal pellets called shot and is placed on the plate or mantle The reaction vessel is then partially covered by sand or pellets The sand or shot then conducts the heat from the plate to all sides of the reaction vessel This technique allows a reaction vessel to be heated throughout with minimal stirring as opposed to heating the bottom of the vessel and waiting for convection to heat the remainder cutting down on both the duration of the reaction and the possibility of side reactions that may occur at higher temperatures A variation on this theme is the water bath in which the sand is replaced with water It can be used to keep a reaction vessel at the temperature of boiling water until all water is evaporated see Standard enthalpy change of vaporization Sand baths are one of the oldest known pieces of laboratory equipment having been used by the alchemists In Arabic alchemy a sand bath was known as a qadr 1 In Latin alchemy a sand bath was called balneum siccum balneum cineritium or balneum arenosum Contents 1 See also 2 Notes 3 References 4 External linksSee also editHeat bath Water bath Oil bathNotes edit Georges C Anawati Arabic alchemy p 868 in Rashed amp Morelon 1996 pp 853 902 References edit nbsp This article incorporates text from a publication now in the public domain Chambers Ephraim ed 1728 Sand bath Cyclopaedia or an Universal Dictionary of Arts and Sciences 1st ed James and John Knapton et al Rashed Roshdi Morelon Regis 1996 Encyclopedia of the History of Arabic Science Routledge ISBN 0 415 12410 7External links edithttps web archive org web 20110604144037 http digicoll library wisc edu cgi bin HistSciTech HistSciTech idx type turn amp entity HistSciTech000900240229 amp isize L Retrieved from https en wikipedia org w index php title Sand bath amp oldid 1115368307, wikipedia, wiki, book, books, library,
