14808-60-7 Usage
Description
Silicon dioxide, also known as silica, is a chemical compound with the formula SiO2. It is an oxide of silicon and is insoluble in water or acids except hydrofluoric acid. Silicon dioxide appears as transparent to gray, tasteless crystals and is widely found in nature as sand or quartz. It is one of the most abundant minerals in the Earth's crust and has a wide range of applications in various industries.
Uses
1. Used in Electronics Industry:
Silicon dioxide is used as a piezoelectric control in filters, oscillators, frequency standards, wave filters, and radio and TV components.
2. Used in Pharmaceutical and Food Industry:
Silicon dioxide is used as an anticaking agent, carrier, and dispersant that can absorb approximately 120% of its weight and remain free-flowing. It is used in salt, flours, powdered soups, powdered coffee whitener, vanilla powder, baking powder, dried egg yolk, and tortilla chips.
3. Used in Cosmetics Industry:
Quartz is used as an alternative to diatomaceous earth or clay in the development of mineral makeup, pressed or loose powders. It has abrasive, absorbent, and anti-caking properties and can also reduce the transparency of a formulation.
4. Used in Glass Manufacturing:
Silicon dioxide is a primary component in the production of various types of glass, such as soda-lime glass and borosilicate glass. It is also used in the production of glassware and cooking products like Pyrex.
5. Used in Construction Industry:
Quartz is used as a basic ingredient in cement and concrete, fiber glass insulation, and as a filler in paints, adhesives, rubber, and coatings.
6. Used in Water Treatment:
Quartz is the primary filter medium used in wastewater treatment. Activated Quartz formulations are also used in chromatography in chemistry laboratories.
7. Used in Sand Casting:
Silicon dioxide is used as a mold material for metal casting, particularly for iron, aluminum, and copper items.
8. Used in Energy Conversion:
Silicon dioxide is used as a medium for the conversion of energy.
9. Used in DNA and RNA Extraction:
Silicon dioxide is used in the extraction of DNA and RNA.
10. Used as a Defoamer Component:
Silicon dioxide is used as a component in defoamers.
11. Used in the Production of Cement and Refractory Materials:
Silicon dioxide is used as an additive in the production of cement and refractory materials.
12. Used in the Manufacturing of Semiconductors:
Silicon dioxide is used as a precursor to glass and silicon, which are essential materials in the manufacturing of semiconductors.
References
https://en.wikipedia.org/wiki/Silicon_dioxide
http://www.newhealthguide.org/Silicon-Dioxide.html
Characteristics
Quartz?can exist in either a crystalline or noncrystalline form. In Quartz, SiO2 exists in the natural crystalline state and possesses long-range order, with the silicon atom covalently bonded to oxygen atoms in a tetrahedral arrangement in a regular repeating pattern. Glass is an example of noncrystalline Quartz. Although natural glasses exist, Quartz?glasses are produced when Quartz?is heated to an elevated temperature and then rapidly cooled. The rapid cooling does not allow the SiO2 to form a regular crystalline structure with long-range order. The result is a solid that behaves like a viscous liquid when heated. Glass is sometimes called a solid solution and fl ows at a very slow rate. This can sometimes be seen in old window glass where the bottom is slightly thicker than the top. The actual structures form a three-dimensional tetrahedral pattern. Quartz?is sold as sand and its main uses are for glass; ceramics; foundry sand, a source of silicon in the chemical industry; as a filtration media; a filler/extender; an abrasive; and as an adsorbent.
Hazard
Avoid inhalation of fine particles.
Health Hazard
Exposure to Quartz?can result in the disease called silicosis. Silicosis is a disabling, nonreversible, and sometimes fatal lung disease caused by overexposure to respirable crystalline Quartz. In silicosis, Quartz?particles enter the lung where they become trapped, producing areas of swelling. The swelling results in nodules that become progressively larger as the condition worsens. Silicosis is defined at several levels of severity: chronic silicosis, accelerated silicosis, and acute silicosis. Chronic silicosis results from long-term (20 years) exposure to low concentrations of Quartz, whereas acute silicosis is the result of a short-term exposure (a year or less) to high concentrations. Symptoms may not be obvious in cases of chronic silicosis and x-ray screening is recommended for at-risk groups. These include sand-blasters, miners, laborers who regularly saw, drill, and jack-hammer concrete, and general construction such as tunnel drilling. In advanced stages of silicosis, individuals have difficulty breathing, especially when active.
Safety Profile
Confirmed carcinogen with experimental carcinogenic, tumorigenic, and neoplastigenic data. Experimental poison by intratracheal and intravenous routes. An inhalation hazard. Human systemic effects by inhalation: cough, dyspnea, liver effects. Incompatible with OF2, vinyl acetate. See also other silica entries
Carcinogenicity
Quartz was not mutagenic in bacterial
assays; both positive and negative results have
been reported in a wide variety of in vivo and
in vitro genotoxic assays.
Check Digit Verification of cas no
The CAS Registry Mumber 14808-60-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,4,8,0 and 8 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 14808-60:
(7*1)+(6*4)+(5*8)+(4*0)+(3*8)+(2*6)+(1*0)=107
107 % 10 = 7
So 14808-60-7 is a valid CAS Registry Number.
InChI:InChI=1/O2Si/c1-3-2
14808-60-7Relevant articles and documents
CYCLOBUTYL AMIDE MONOACYLGLYCEROL LIPASE MODULATORS
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, (2022/03/31)
Compounds of Formula (I), and pharmaceutically acceptable salts, isotopes, N-oxides, solvates, and stereoisomers thereof, pharmaceutical compositions containing them, methods of making them, and methods of using them including methods for treating disease states, disorders, and conditions associated with MGL modulation, such as those associated with pain, psychiatric disorders, neurological disorders (including, but not limited to depression, major depressive disorder, treatment resistant depression, anxious depression, autism spectrum disorders, Asperger syndrome, and bipolar disorder), cancers and eye conditions: wherein R1, , R3, and L are as defined herein.
COMPOUND FOR INHIBITING PGE2/EP4 SIGNALING TRANSDUCTION INHIBITING, PREPARATION METHOD THEREFOR, AND MEDICAL USES THEREOF
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, (2022/03/14)
A compound of formula (I), a preparation method therefor, a pharmaceutical composition containing a derivative thereof, and the therapeutic uses thereof, especially inhibiting PGE2/EP4 signalling transduction and the uses thereof for treating cancer, acute or chronic pain, migraine, osteoarthritis, rheumatoid arthritis, gout, bursitis, ankylosing spondylitis, primary dysmenorrhea, tumour or arteriosclerosis.
TEMPERATURE-SENSITIVE NANO SILVER CONTROLLED-RELEASE SMART ANTIBACTERIAL COATING AND PREPARATION METHOD THEREFOR
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, (2019/02/13)
This present invention discloses a temperature-sensitive nano-silver controlled release antibacterial coating composite, which is comprises: water, acrylic, polyurethane resin, temperature-sensitive nano-silver controlled release antibacterial agent, dispersant, curing agent, defoamer, filming additive and leveling agent. By adsorbing nano silver particles into the pores of mesoporous SiO2 modified by poly N-isopropyl acrylamide, we successfully prepared a temperature-sensitive nano-silver controlled release antibacterial agent. By adding the prepared agent to the conventional coating composite, we achieved “on-off” control of the antibacterial properties of coating composite. Through the control of temperature, the release of nano-silver in the mesoporous nano-silica of the coating film layer is controlled. This control method is not only to protect the nano-silver, but also to adjust the strength of the anti-bacterial properties according to the actual demands and improve the use-efficiency of nano silver particles. This invention is in line with the new concept of “Intelligent Age” in the 21st century.
