Silica gel, a fairly porous amorphous silica gel, is used for a variety of purposes, silica gel singapore priceincluding removing water from gases and liquids, thickening beverages, and providing smooth surfaces in paints and synthetic films. , remained in 1640. It remained a curiosity until at some point its sorption properties proved useful in gasoline masks.
Widely distributed by acidifying solutions of silicates such as water glass. The resulting silicic acid forms a hard mass or gelatinous precipitate from which soluble material is removed by washing with water. Moisture is eventually removed by heating, leaving a glassy granular stye. In order to maximize its desiccant function, the gel is not completely dehydrated, but remains mixed with a small amount of water.
Silica has a good density of 2.2 grams per milliliter (137 pounds per cubic foot), but silica gel's porosity gives it a much lower bulk density. A common industrial form has a bulk density of about zero. 7 grams per milliliter, approximately 750 square meters per gram, and over 5 acres per ounce. Silicic acid, also known as silicon dioxide, is a compound of the two most common elements in the earth's crust, silicon and oxygen, SiO2.
The majority of the Earth's crust is 59% silica, a major component of over 95% of recognized rocks. Silica has three basic crystal types: quartz (the most numerous), tridymite, and cristobalite. The various grades consist of coesite, keatite, and leschatelierite. Silica sand is used in buildings and roads in the form of Portland cement, concrete and mortar, and sandstone.
Silica is also used for grinding and polishing glass and stone. In casting molds; production of glass, ceramics, silicon carbide, ferrosilicon, silicon. as fire resistant cloth; and as jewelry. Silica gel is often used as a desiccant to keep out moisture. Inorganic compound, any substance in which two or more chemical agents (usually in addition to carbon) are combined, most often in specific ratios. A carbon compound is called organic if the carbon is bonded to hydrogen. Carbides (e.g. silicon carbide [sic2]), some carbonates (e.g. calcium carbonate [caco3]), some cyanides. continue reading