Any agent, particularly a silica gel, that removes gaseous water from the air and reduces relative humidity. Desiccants can be used in sealed enclosures to protect photographs from humidity. Since silica gels can be made to give up their absorbed moisture by heating, desiccants may be reused.
A water absorbing material such as activated alumina used to dry some air being drawn into the reservoirs through the breathers. Some show when they are spent by changing color as for example, from blue when dry to pink when wet.
Chemical that, when applied to a living plant, causes or accelerates drying of its aerial parts; used to facilitate burning of living vegetation by substantially lowering fuel moisture content within a few hours.
A drying agent. Engelhard desiccants are packed with electronic equipment and other products to protect them from moisture. Our newest desiccants are at the heart of air-conditioning systems that allow separate control of temperature and humidity.
Generally a pure molecular sieve- or silica gel-based product, the desiccant is placed within the cavity spacer bar of double-glazed units in order to dehydrate or to remove any residual moisture in the unit
A drying agent that is used in accumulators and receiver driers to attract and remove moisture and ensure a dry system. You will also be familiar with desiccants when you purchase electronic equipment; they are the small packs of ‘salt like’ powder; they are used to assure a moisture free package.
Moisture absorbing material used inside the spacer in an insulated glass assembly, so as to control moisture levels and prevent moisture from frosting or condensing on the inside glass surfaces of the insulated unit.
A drying agent used in the refrigeration system to remove moisture. The moisture-absorbing zeolyte crystals are located in the accumulator-dryer or receiver-dryer depending on the type of system. R-134a systems generally require XH-7 or XH-9 desiccant.
[DES-uh-kant] A hygroscopic substance such as activated alumina, calcium chloride, silica gel, or zinc chloride that draws water vapor from the air. Desiccants are used to maintain a dry environment for equipment and materials.
A chemical agent that absorbs moisture; desiccants can be used to control certain insect pests or mildew, and also to dry foliage before harvest (as with potatoes). Desiccants are regulated as pesticides under the Federal Insecticide, Fungicide, and Rodenticide Act.