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  2. Silicon dioxide - Wikipedia

    en.wikipedia.org/wiki/Silicon_dioxide

    Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula SiO 2, commonly found in nature as quartz. [5] [6] In many parts of the world, silica is the major constituent of sand. Silica is one of the most complex and abundant families of materials, existing as a compound of several minerals and as a synthetic product.

  3. Occupational dust exposure - Wikipedia

    en.wikipedia.org/wiki/Occupational_dust_exposure

    Crystalline silica (chemically, silicon dioxide) is a very common mineral found in the earth's outside layer. Quartz is the most common type of crystalline silica. Sand, stone, cement, and mortar contain crystalline silica. It is used to make items like glass, stoneware, earthenware, blocks, and manufactured stone.

  4. Silica gel - Wikipedia

    en.wikipedia.org/wiki/Silica_gel

    Silica gel is an amorphous and porous form of silicon dioxide (silica), consisting of an irregular tridimensional framework of alternating silicon and oxygen atoms with nanometer-scale voids and pores. The voids may contain water or some other liquids, or may be filled by gas or vacuum.

  5. Silicosis - Wikipedia

    en.wikipedia.org/wiki/Silicosis

    Silicon (Si) is the second most common element in the Earth's crust after oxygen. The compound silica, also known as silicon dioxide (SiO 2), is formed from silicon and oxygen atoms. Since oxygen and silicon make up about 75% of the Earth's crust, the compound silica is quite common.

  6. Occupational hazards of fire debris cleanup - Wikipedia

    en.wikipedia.org/wiki/Occupational_hazards_of...

    Additional health hazards of fire debris cleanup work may include carbon monoxide and hazardous liquids [2] Silica, or silicon dioxide, can occur in a crystalline or noncrystalline (amorphous) form. In fire debris, silica can be found in concrete, roofing tiles, or it may be a naturally occurring element in the rocks and soil of the burnt out ...

  7. Potassium silicate - Wikipedia

    en.wikipedia.org/wiki/Potassium_silicate

    In horticulture, potassium silicate is used as a soluble source of potassium and silica.It makes the growing medium more alkaline. It is also used as a supplement (in conjunction with normal fertilizer) for the numerous benefits that increasing the availability of silicon compounds has.

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    mail.aol.com/?rp=webmail-std/en-us/basic

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Precipitated silica - Wikipedia

    en.wikipedia.org/wiki/Precipitated_silica

    Precipitated silica is an amorphous form of silica (silicon dioxide, SiO 2); it is a white, powdery material. Precipitated silica is produced by precipitation from a solution containing silicate salts. The three main classes of amorphous silica are pyrogenic silica, precipitated silica and silica gel.