Introduction And Safety Of Silicone
🕙 2023-08-25 👆
Silica gel alias: silicone gel, is a highly active adsorption material, is an amorphous substance. The main component of silicone is silica, which is chemically stable and does not burn. Chemical formula xSiO2·yH2O. Transparent or milky granular solid. It has an open porous structure, strong adsorption and can adsorb a variety of substances. Dilute sulfuric acid (or hydrochloric acid) is added to the water solution of water glass and left to stand, and it becomes a water-containing silicic acid gel and solid. The electrolyte Na+ and SO42 -(Cl-) ions dissolved in it are removed by washing, and silica gel can be obtained after drying. Such as absorbing water, some silicone moisture absorption of about 40%, or even 300%. Used for gas drying, gas absorption, liquid dehydration, chromatographic analysis, etc., also used as a catalyst. If cobalt chloride is added, it is blue when drying and red after absorbing water. Renewable for repeated use.
The main component of silicone is silica, which is chemically stable and does not burn. Silica gel is a kind of amorphous silica, should control the dust content of the workshop is not more than 10 mg/cubic meter, need to strengthen the exhaust air, wear a mask when operating.
Silica gel has a strong adsorption capacity and can produce a drying effect on human skin, therefore, you should wear good work clothes when operating. If the silicone enters the eye, it is necessary to rinse with a lot of water and seek medical treatment as soon as possible.
Blue silica gel because it contains a small amount of cobalt chloride, potentially toxic, should avoid contact with food and inhalation of mouth, such as poisoning should immediately seek medical treatment.
Silica gel in the process of use due to adsorption of water vapor or other organic substances in the medium, the adsorption capacity is reduced, can be reused after regeneration.
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