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Silicon Dioxide (Si02) from READE PDF Print E-mail

fused silica, silica flour, silox, Si02, quartz, fused silica, high purity sand, silicon dioxide, silica, silox, Si02, quartz, CAS# 7631-86-9 amorphous silica, CAS# 14808-60-7 crystalline silica, abrasive cleaners, inert fillers, hydraulic fracturing, fused silica, silica flour, silox, Si02, quartz, fused silica, high purity sand, silicon dioxide, silica, silox, Si02, quartz, CAS# 7631-86-9 amorphous silica, CAS# 14808-60-7 crystalline silica, abrasive cleaners, inert fillers, hydraulic fracturing, fused silica, silica flour, silox, Si02, quartz, fused silica, high purity sand, silicon dioxide, silica, silox, Si02, quartz, CAS# 7631-86-9 amorphous silica, CAS# 14808-60-7 crystalline silica, abrasive cleaners, inert fillers, hydraulic fracturing,  fused silica, silica flour, silox, Si02, quartz, fused silica, high purity sand, silicon dioxide, silica, silox, Si02, quartz, CAS# 7631-86-9 amorphous silica, CAS# 14808-60-7 crystalline silica, abrasive cleaners, inert fillers, hydraulic fracturing,  fused silica, silica flour, silox, Si02, quartz, fused silica, high purity sand, silicon dioxide, silica, silox, Si02, quartz, CAS# 7631-86-9 amorphous silica, CAS# 14808-60-7 crystalline silica, abrasive cleaners, inert fillers, hydraulic fracturing,   fused silica, silica flour, silox, Si02, quartz, fused silica, high purity sand, silicon dioxide, silica, silox, Si02, quartz, CAS# 7631-86-9 amorphous silica, CAS# 14808-60-7 crystalline silica, abrasive cleaners, inert fillers, hydraulic fracturing,

  • Silicon Dioxide Sand, (SiO2) Synonyms:

fused silica, silica flour, silox, Si02, quartz, fused silica, high purity sand, silicon dioxide, silica, silox, Si02, quartz, CAS# 7631-86-9 amorphous silica, CAS# 14808-60-7 crystalline silica, abrasive cleaners, inert fillers, hydraulic fracturing,

  • Silicon Dioxide Sand, (SiO2) Designations:

Chemical Name: Silicon dioxide

Chemical Formula: SiO2

  • Silicon Dioxide Sand, (SiO2) Description:

1) The chemical compound silicon dioxide, also known as silica (from the Latin silex), is an oxide of silicon with a chemical formula of SiO2 and has been known for its hardness since antiquity. Silica is most commonly found in nature as sand or quartz, as well as in the cell walls of diatoms. Silica is the most abundant mineral in the Earth's crust.

2) Silica is manufactured in several forms including glass, crystal, gel, aerogel, fumed silica (or pyrogenic silica), and colloidal silica (e.g. Aerosil). In addition, Silica nanosprings are produced by the vapor-liquid-solid method at temperatures as low as room temperature.

3) Silica is noncombustible, colorless or white and is in a crystal form. High purity sand, almost entirely composed of silica, is a major industrial commodity. Silica sand products are marketed in a wide range of grades, including extremely fine grades known as flours.  Source: Wikipedia

  • Silicon Dioxide Sand, (SiO2) Chemical Properties:

            1) Silicon dioxide has covalent bonding and forms a network structure.

    2) Silicon dioxide is formed when silicon is exposed to oxygen (or air). A very thin layer (approximately 1 nm or 10 Å) of so-called 'native oxide' is formed on the surface when silicon is exposed to air under ambient conditions. Higher temperatures and alternate environments are used to grow well-controlled layers of silicon dioxide on silicon.

    3) Silicon dioxide is attacked by hydrofluoric acid (HF). HF is used to remove or pattern silicon dioxide in the semiconductor industry. 

  • Silicon Dioxide Sand, (SiO2) Physical Properties Available:

1) Silica sand products are available in a wide range of grades including extremely fine grades known as flours.

2) Send to READE your chemical and physical specification.

  • Silicon Dioxide Sand, (SiO2) Physical Constants:

Molecular Weight (g/mol.)

60.1

Apparent Density (g/cm3)

 

RTECS Number

VV7310000

Melting Point (°C)

Melting point depends on the crystalline form (~ 3110)

Boiling Point (°F)

4046

Surface Area (m2/g)

 

Solubility In Water

Insoluble

Mohs Hardness @20°C

 

Specific Gravity (g/cc)

Specific gravity depends on the crystalline form (~2.20)

Particle Shape

 

 

 

Crystallography

Usually silicon tetrahedral


  • Silicon Dioxide Sand, (SiO2) Typical Applications:

Inert fillers, abrasive cleaners, hydraulic fracturing, etc.

  • Silicon Dioxide Sand, (SiO2) Packaging:

1) Pails, jars, drums, multiply paper bags, bulk bags and fiberboard containers.

2) For further information on packaging options contact READE

  • Silicon Dioxide Sand, (SiO2) Chemical Abstract Number:

   1) CAS# 14808-60-7 (crystalline silica- cristobalite, quartz, tridymite, tripoli)

   2) CAS# 7631-86-9 (amorphous silica- diatomaceous earth, diatomaceous silica, diatomite, precipitated amorphous silica, silica gel,  

  • Silicon Dioxide Sand, (SiO2) TSCA (SARA Title III) Status:

1) Visit this external NIOSH Guide to Chemical Hazard Website

2) Listed. For further information please call the E.P.A. at +1.202.554.1404

  • Silicon Dioxide Sand, (SiO2) Health Effects:

1) Inhaling finely divided crystalline silica dust in very small quantities (OSHA allows 0.1mg/m3) over time can lead to silicosis, bronchitis or (much more rarely) cancer, as the dust becomes lodged in the lungs and continuously irritates them, reducing lung capacities (silica does not dissolve over time). This effect can be an occupational hazard for people working with sandblasting equipment, products that contain powdered silica, and so on. But children, asthmatics of any age, allergy sufferers and the elderly, all of whom have reduced lung capacity, can be affected in much shorter periods of time.

2) In all other respects, silicon dioxide is inert and harmless. When silica is ingested orally, it passes unchanged through the gastrointestinal tract, exiting in the feces, leaving no trace behind. Small pieces of silicon dioxide are equally harmless, as long as they are not large enough to mechanically obstruct the GI tract, or jagged enough to lacerate its lining. Silicon dioxide produces no fumes and is insoluble in vivo. It is indigestible, with zero nutritional value and zero toxicity.

 

 

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