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Quartz

Product Name:
Quartz
CAS No.
14808-60-7
Chemical Name:
Quartz
CBNumber:
CB9154858
Molecular Formula:
O2Si
Formula Weight:
60.0843
MOL File:
14808-60-7.mol
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Quartz Property

Melting point:
1610 °C(lit.)
Boiling point:
2230 °C
Density 
2.6 g/mL at 25 °C(lit.)
refractive index 
n20/D 1.544(lit.)
storage temp. 
Storage temperature: no restrictions.
form 
powder
Specific Gravity
2.2-2.6
color 
white
PH
5-8 (400g/l, H2O, 20℃)(slurry)
Water Solubility 
insoluble
Stability:
Stable.
InChIKey
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
CAS DataBase Reference
14808-60-7(CAS DataBase Reference)
NIST Chemistry Reference
Silicon oxide(14808-60-7)
EPA Substance Registry System
Quartz (14808-60-7)
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Safety

Hazard Codes 
Xn
Risk Statements 
36/37/38-48/20
Safety Statements 
26-24/25-22
WGK Germany 
3
RTECS 
ZG6800000
TSCA 
Yes
HS Code 
25061000
Toxicity
LDLo intravenous in dog: 20mg/kg
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N-Bromosuccinimide Price More Price(56)

Sigma-Aldrich Gold
Product number:
204358
Product name :
Sand, white quartz
Purity:
≥99.995% trace metals basis
Packaging:
5g
Price:
$42.2
Updated:
2019/12/02
Buy:
Buy
Sigma-Aldrich Gold
Product number:
204358
Product name :
Sand, white quartz
Purity:
≥99.995% trace metals basis
Packaging:
20g
Price:
$128
Updated:
2019/12/02
Buy:
Buy
Alfa Aesar Gold
Product number:
013024
Product name :
Silicon(IV) oxide, 99.5%
Packaging:
2kg
Price:
$54.9
Updated:
2019/12/02
Buy:
Buy
Alfa Aesar Gold
Product number:
013024
Product name :
Silicon(IV) oxide, 99.5%
Packaging:
10kg
Price:
$127
Updated:
2019/12/02
Buy:
Buy
Sigma-Aldrich Gold
Product number:
274739
Product name :
Sand
Purity:
50-70 mesh particle size
Packaging:
5kg
Price:
$135
Updated:
2019/12/02
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Buy
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Quartz Chemical Properties,Usage,Production

Description

Silicon dioxide (chemical formula: SiO2) is a chemical compound comprised of oxide and silicon elements. It is insoluble in water or acids except hydrofluoric acid. It appears as transparent to gray, tasteless crystal which is widely presented in nature as sand or quartz. It is also one of the most abundant mineral existing in Earth’s crust. It has wide applications in various fields as below: (1) as the precursor to glass and silicon; (2) for sand casting; (3) as a additive to food and pharmaceutical products; (4) for production of cement and refractory materials; (5) as the medium for conversion of energy. (6) Extraction of DNA and RNA; (7) as a defoamer component. There are many ways for production of silicon. The most common way is through mining and purification of quartz.

References

https://en.wikipedia.org/wiki/Silicon_dioxide
http://www.newhealthguide.org/Silicon-Dioxide.html

Description

Silicon dioxide, generally known as silica, is a colorless solid that exists in numerous crystalline forms, the most common of which is quartz. Oxygen and silicon are the two most common elements in the earth’s crust, and silicon dioxide is the principal component of sand. Silica is used biologically, most notably by phytoplanktonic diatoms and the zooplankton radiolarians in their shells. The words silica and silicon come from the Latin silex meaning hard stone or fl int. Silica, SiO2, should not be confused with silicates or silicones. Silicates contain the basic tetrahedral unit SiO4 4- bonded to metal ions such as aluminum, iron, sodium, magnesium, calcium, and potassium to form numerous silicate minerals. Silicones are synthetic polymers made of monomers with at least two silicon atoms combined with an organic group and generally containing oxygen.

Chemical Properties

granular abrasive solid of varied colour, depending upon other

Chemical Properties

Silicon dioxide/crystalline silica is a component of many mineral dusts and materials which melts to a glass at very high temperature.

Characteristics

Silica 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 silica. Although natural glasses exist, silica glasses are produced when silica 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. Silica 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.

Uses

Silicon Dioxide is an anticaking agent, carrier, and dispersant that can absorb approximately 120% of its weight and remain free flowing. it is used in salt, flours, and powdered soups to prevent caking caused by moisture. it is also used in powdered coffee whitener, vanilla powder, baking powder, dried egg yolk, and tortilla chips. the usage level ranges from 1 to 2%. it is also termed silica, amorphous.

Uses

Electronic components; piezoelectric control in filters, oscillators, frequency standards, wave filters, radio and TV components; barrel-finishing abra- sive.

Uses

Formulators may select silicon dioxide (solum diaomeae) as an alternative to diatomaceous earth or clay, particularly when developing mineral make-up, pressed or loose powders. Silicon dioxide has abrasive, absorbent, and anti-caking properties, and can also reduce the transparency of a formulation. Silicon dioxide is the u.S. name for what is known as solum diatomeae.

Uses

As the art of glass making developed, individuals discovered how to produce different glasses by adding various substances to the silica melt. The addition of calcium strengthened the glass, and other substances imparted color to the glass. Iron and sulfur give brown glass, copper produces a light blue color, and cobalt a dark blue color. Manganese was added to produce a transparent glass, and antimony to clear the glass of bubbles. Most modern glass produced is soda-lime glass and consists of approximately 70% SiO2, 15% Na2O (soda), and 5% CaO (lime). Borosilicate glass is produced by adding about 13% B2O3. Borosilicate glass has a low coeffi cient of thermal expansion and is therefore very heat resistant. It is used extensively in laboratory glassware and in cooking where it is sold under the brand name Pyrex. Because of silica's high melting point, it is ideal for making molds for metal casting. It is regularly used to form iron, aluminum, and copper items. Silica is the primary filter medium used in wastewater treatment. Filtration systems often modify silica physically and chemically to produce activated silica formulations. Besides water treatment, activated silica gels used for chromatography in chemistry laboratories. In the construction industry, silica glass is used as fiber glass insulation, silica sand is a basic ingredient in cement and concrete, and is used indirectly in building products. Silica is used as filler in paints, adhesives, rubber, and coatings. It is added to personal care products such as tooth polishes.

Definition

A natural crystalline form of silica (SiO2).

Definition

A purple form of the mineral quartz (silicon(IV) oxide, SiO2) used as a semiprecious gemstone. The color comes from impurities such as oxides of iron.

Definition

agate: A variety of chalcedony thatforms in rock cavities and has a patternof concentrically arranged bandsor layers that lie parallel to the cavitywalls. These layers are frequently alternatingtones of brownish-red.
Moss agate does not show the samebanding and is a milky chalcedonycontaining mosslike or dendritic patternsformed by inclusions of manganeseand iron oxides. Agates areused in jewellery and for ornamentalpurposes.

Definition

quartz: The most abundant andcommon mineral, consisting of crystallinesilica (silicon dioxide, SiO2),crystallizing in the trigonal system. Ithas a hardness of 7 on the Mohs’scale. Well-formed crystals of quartzare six-sided prisms terminating insix-sided pyramids. Quartz is ordinarilycolourless and transparent, inwhich form it is known as rock crystal.Coloured varieties, a number ofwhich are used as gemstones, includeamethyst, citrine quartz (yellow),rose quartz (pink), milk quartz(white), smoky quartz (grey-brown),chalcedony, agate, and jasper.Quartz occurs in many rocks, especiallyigneous rocks such as graniteand quartzite (of which it is the chiefconstituent), metamorphic rockssuch as gneisses and schists, and sedimentary rocks such as sandstone andlimestone. The mineral is piezoelectricand is used in oscillators. It isalso used in optical instruments andin glass, glaze, and abrasives.

Definition

Crystallized silicon dioxide (silica).

Hazard

Avoid inhalation of fine particles.

Health Hazard

Exposure to silica can result in the disease called silicosis. Silicosis is a disabling, nonreversible, and sometimes fatal lung disease caused by overexposure to respirable crystalline silica. In silicosis, silica 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 defi ned 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 silica, 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. Th ese 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

Potential Exposure

Cristobalite is used in the manufacture of water glass, refractories, abrasives, ceramics and enamels. Quartz is used as a mineral, natural or synthetic fiber. Tridymite is used as a filtering and insulating media and as a refractory material for furnace linings. Workers are potentially exposed to crystalline silica in such industries as granite quarrying and cutting, foundry operations; metal, coal, dentistry, painting, and nonmetallic mining; and manufacture of clay and glass products.

Incompatibilities

Violent reactions with powerful oxidizers: fluorine, chlorine trifluoride; manganese trioxide; oxygen difluoride, hydrogen peroxide, etc.; acetylene; ammonia.

Waste Disposal

Sanitary landfill

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Quartz Suppliers

Global(256)Suppliers
Shanghai Aladdin Bio-Chem Technology Co.,LTD
Tel:
021-20337333/400-620-6333
Fax:
021-50323701
Email:
sale@aladdin-e.com
Country:
China
ProdList:
24984
Advantage:
65
Wuhan Ji Ye Sheng Chemical Co., Ltd.
Tel:
13545242311
Email:
2471076463@qq.com
Country:
CHINA
ProdList:
433
Advantage:
58
Aikon International Limited
Tel:
025-66151770,13813800073//qq:2885670560
Fax:
(8)02557626880
Email:
lwan@aikonchem.com
Country:
China
ProdList:
12400
Advantage:
58
Alfa Aesar
Tel:
400-610-6006; 021-67582000
Fax:
021-67582001/03/05
Email:
saleschina@alfa-asia.com
Country:
China
ProdList:
30163
Advantage:
84
BeiJing Hwrk Chemicals Limted
Tel:
21-51691807-
Fax:
021-55236763
Email:
peter.shi@hwrkchemical.com;
Country:
China
ProdList:
18708
Advantage:
55
Energy Chemical
Tel:
021-58432009 / 400-005-6266
Fax:
021-58436166-800
Email:
info@energy-chemical.com
Country:
China
ProdList:
44026
Advantage:
61
Beijing Ouhe Technology Co., Ltd
Tel:
010-82967028-
Fax:
+86-10-82967029
Email:
2355560935@qq.com
Country:
China
ProdList:
12495
Advantage:
60
Suzhou Kaiyuan Minsheng Sci&Tech Corp. Ltd.
Tel:
+86-512-62889106
Fax:
+86-512-62889738
Email:
marketing@minshengpharm.com
Country:
China
ProdList:
96
Advantage:
66
Adamas Reagent, Ltd.
Tel:
400-600-9262
Email:
bxy@titansci.com
Country:
China
ProdList:
13918
Advantage:
59

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  • MOLECULAR SIEVE, TYPE 4A
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  • ZEOLITE A
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  • QUARTZ, SAND 325 MESH SUITABLE FOR CHROMATOGRAPHY ( WASHED)
  • QUARTZ ROD
  • QUARTZ, SAND 99.95%
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  • QUARTZ MICROFIBRE FILTER CIRCLES WHATMAN QM-A 2.5CM DIA BOX 100
  • QUARTZ, POWDER 100-150 MESH ( WASHED)
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  • QUARTZ, SAND 200-250 MESH SUITABLE FOR CHROMATOGRAPHY ( WASHED)
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  • QUARTZ BLOCK FUSED, 99.5%
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Description References