Quartz

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Description References

Product Name: Quartz
CAS No.: 14808-60-7
Chemical Name: Quartz
Synonyms: Silica;AMETHYST;silica sol;SODIUM ALUMINOSILICATE;SODIUM ALUMINUM SILICATE;Quartz (SiO2);MOLECULAR SIEVE 4A;MOLECULAR SIEVES 3A;Rose quartz;MOLECULAR SIEVES 4A
CBNumber: CB9154858
Molecular Formula: O2Si
Formula Weight: 60.08
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.

no restrictions.

solubility

insoluble in H2O, acid solutions; soluble in HF

form

powder

color

white

Specific Gravity

2.2-2.6

PH

5-8 (400g/l, H2O, 20℃)(slurry)

Water Solubility

insoluble

Crystal Structure

Quartz type

crystal system

Three sides

Space group

P3221

Lattice constant

a/nm	b/nm	c/nm	α/o	β/o	γ/o	V/nm3
0.49134	0.49134	0.54052	90	90	120	0.113

Dielectric constant

4.2（0.0℃）

Exposure limits

ACGIH: TWA 0.025 mg/m3
OSHA: TWA 50 μg/m3
NIOSH: IDLH 50 mg/m3; TWA 0.05 mg/m3

Stability:

Stable.

InChIKey

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

CAS DataBase Reference

14808-60-7(CAS DataBase Reference)

NIST Chemistry Reference

Silicon oxide(14808-60-7)

IARC

1 (Vol. Sup 7, 68, 100C) 2012

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
OEB: D
OEL: TWA: 0.05 mg/m3
WGK Germany: 3
RTECS: ZG6800000
TSCA: Yes
HS Code: 25061000
Hazardous Substances Data: 14808-60-7(Hazardous Substances Data)
Toxicity: LDLo intravenous in dog: 20mg/kg
IDLA: 25 mg/m3

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H372Causes damage to organs through prolonged or repeated exposure

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P314Get medical advice/attention if you feel unwell.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: SX0076
Product name: Sand
Purity: Sea
Packaging: 500g
Price: $33.1
Updated: 2024/03/01

Sigma-Aldrich

Product number: SX0075
Product name: Sand
Purity: Standard,washedanddried
Packaging: 500g
Price: $63.8
Updated: 2024/03/01

Sigma-Aldrich

Product number: SX0076
Product name: Sand
Purity: Sea
Packaging: 22.72kg
Price: $451
Updated: 2024/03/01

Sigma-Aldrich

Product number: SX0075
Product name: Sand
Purity: Standard,washedanddried
Packaging: 2.5kg
Price: $152
Updated: 2024/03/01

Sigma-Aldrich

Product number: SX0075
Product name: Sand
Purity: Standard,washedanddried
Packaging: 12kg
Price: $432
Updated: 2024/03/01

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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

Quartz is a colorless solid that exists in numerous crystalline forms. Oxygen and silicon are the two most common elements in the earth's crust, and Quartz is the principal component of sand. Quartz is used biologically, most notably by phytoplankton diatoms and the zooplankton radiolarians in their shells. Quartz, SiO₂, should not be confused with Quartz or silicones. Quartz contain the basic tetrahedral unit SiO₄4-bonded to metal ions such as aluminum, iron, sodium, magnesium, calcium, and potassium to form numerous Quartz 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

Quartz is a component of many mineral dusts and materials which melts to a glass at very high temperature.

Occurrence

Quartz is the oxide of the nonmetallic element silicon, is the commonest of minerals, and appears in a greater number of forms than any other. Its formula is SiO₂. Quartz commonly occurs in prismatic hexagonal crystals terminated by a pyramid. This pyramid is due to the equal development of two rhombohedrons, and may be observed in cases where one rhombohedron predominates. Cleavage is not observed; the fracture is typically conchoidal; hardness is 7; specific gravity, 2.65; luster, vitreous to greasy or dull; colorless to white, pink, purple, yellow, blue, green, smoky brown to nearly black; transparent to opaque.

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.

Uses

As the art of glass making developed, individuals discovered how to produce different glasses by adding various substances to the Quartz 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 Quartz's high melting point, it is ideal for making molds for metal casting. It is regularly used to form iron, aluminum, and copper items. Quartz is the primary filter medium used in wastewater treatment. Filtration systems often modify Quartz physically and chemically to produce activated Quartz formulations. Besides water treatment, activated Quartz gels used for chromatography in chemistry laboratories. In the construction industry, Quartz glass is used as fiber glass insulation, Quartz sand is a basic ingredient in cement and concrete, and is used indirectly in building products. Quartz is used as filler in paints, adhesives, rubber, and coatings. It is added to personal care products such as tooth polishes.

Uses

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

Uses

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

Uses

Sand, white silica has been employed as a solid sample to evaluate the pore-volume variations during fluid-rock interaction experiments.

Uses

Quartz 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.

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.

Reactions

SiO2 shows strong absorption at 8.5 mm, 9.2 mm, and 12.5 mm (refer to the Silica) and SiO at 10.4 m. Thin films of SiO2 are fabricated by oxidizing the SiO in air after deposition of SiO by vacuum evaporation.

General Description

The product is sand, white quartz (SiO₂). Its reaction with alkaline NaNO₃ solutions containing dissolved Al at 89°C has been investigated.

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.

Industrial uses

Crushed and graded quartz is used as the abrasive in flint sandpapers. Almost any deposit of massive white quartz is suitable. Being the cheapest of all the abrasive-coated paper, this product is still sold in fair amounts, mainly in hardware stores and by small jobbers. It is made only in the form of paper, not as cloth. True chalk flint from England and France is used extensively for this purpose in Europe; it has better cutting qualities and longer life than ordinary quartz. Crushed and ground sand, sandstone, powdered quartz, and silt are sometimes used in hand soaps, scouring compounds, and harsher metal polishes.

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.

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.

Incompatibilities

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

Waste Disposal

Sanitary landfill

Quartz Preparation Products And Raw materials

Raw materials

Silica gel Ammonium hydroxide dilute sulphuric acid AMBERSEP 900, OH FORM ION-EXCHANGE RESIN Reaction tank Silicon Sodium silicate Cobalt chloride hexahydrate Sulfuric acid

Preparation Products

CALCIUM HYDRIDE Osmium tetroxide PotassiumSodiumSilicate INDIUM PHOSPHIDE Silicon carbide Magnesium fluorosilicate Hexafluorosilicic acid attapulgite clay Silicon Praseodymium-Zircon Yellow Premixing agent Silica gel,microporous roundness polyimide adhesive YJ-5 Phosphorus oxychloride Calcium fluoride Pigment Blue 29 Magnesium fluosilicate Calcium metasilicate Porcelain glaze,industrial molecular sieve type Ca—Y Sodium silicate Melamine Strontium sulfate Phosphorus trichloride Silica glass Sodium fluorosilicate Germanium GALLIUM PHOSPHIDE Chrom-tin-Pink Stannite Pigment molecular sieve．Rare-earths SODIUM METASILICATE PENTAHYDRATE Phosphate rock and Phosphorite, calcined FNG silica gel HEXAMETHYLBENZENE Potassium silicate Calcium phosphate dibasic dihydrate Lead silicate

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View Lastest Price from Quartz manufacturers

HEBEI SHENGSUAN CHEMICAL INDUSTRY CO.,LTD

Product: Quartz 14808-60-7
Price: US $999.00-666.00/kg
Min. Order: 1kg
Purity: 99%
Supply Ability: 5000
Release date: 2024-08-09

Shandong Deshang Chemical Co., Ltd.

Product: Quartz 14808-60-7
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Purity: 99.99%
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Release date: 2024-06-24

Hebei Yanxi Chemical Co., Ltd.

Product: Silicon Oxide 14808-60-7
Price: US $50.00/kg
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Release date: 2023-09-11

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Wide Pore Micro-spherical Silica Gel

Blue SG

Macro-pored Micro-spherical SG

SG Type B

SILICONE OXIDE

92553, Quartz (particle size 1400-5000 m icrons)

SAND, WHITE QUARTZ, -50+70 MESH, SUITABL E FOR CHROMATOGRAPHY

93561, Quartz (particle size 14-90 micro ns)

74620, Quartz (particle size 160-630 mi crons)

52885, Quartz (particle size 2.40-32.00 microns)

79598, Quartz (2.50 m2/g) (nitrogen BET specific surface area)

91577, Quartz (particle size 480-1800 mi crons)

QUARTZ, SAND, ACID PURIFIED, 40-100 MESH

75558, Quartz (particle size 1.20-20.00 microns)

QUARTZ, POWDER, >230 MESH

91886, Quartz (particle size 50-220 micr ons)

QUARTZ, POLISHING MATERIAL FOR CONE,POWD ER, >230 MESH

SILICON DIOXIDE COATING QUALITY UMICORE, 0.2-0.7 MM