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Calcium Oxide |
| Calcium oxide or quicklime enjoys a long history |
| as a desiccant and is widely used in the packages |
| of food,clothing,tea,leather products,electronices |
| and sea transportation because of its high |
| absorption capacity and low cost.Calcium |
| oxide,mainly composed of CaO,with a moisture |
| adsorptive capacity of not less than 32% buy |
weight,absorbs moisture through chemical reaction.The distinguishing feature of calcium
|
| oxide(also known as quicklime)is that it will absorb a much greater amount of water |
| vapor at a very low relative humidity than silica gel.It is most effective where a low |
| critical relative humidity is neccessary,and where there is a high concentration of |
| water vapor present.When used in the package of food,the period of keeping food can be |
| .prolonged four to six extra months.In addition,the water vapor absorbed can not be |
| released because of firm combination of CaO and water.The process of absorption is |
| realized by the transformation of the desiccant from particles to powder.Calcium oxide |
| is white,odorless,nonpoisonous and side effects. |
