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Silica gel (SiO2) and alumina (Al2O3) are two adsorbents commonly used by the organic chemist for column chromatography. It is often used as a first purification step after an organic synthesis step. Removing precursors and by-product leaves a cleaner product.1

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What is Respirable Crystalline Silica? Crystalline silica is a common mineral found in many naturally occurring and man-made materials used at construction sites. Materials like sand, concrete, brick, block, stone and mortar contain crystalline silica. Amorphous silica, such as silica gel, is not crystalline silica.

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Apr 21, 2017 · Silica gel is used to absorb the moisture generated whilst shipping items, the issue is due to moving between areas of different ambient moisture content so the differences in a static location would not normally require any silica gel to prevent issues with moisture. It could be an issue with irregularly used laptops

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