ChemicalBook > CAS DataBase List > SILICA

SILICA

SILICA Structure
SILICA
  • CAS No.14464-46-1
  • Chemical Name:SILICA
  • CBNumber:CB5199387
  • Molecular Formula:O2Si
  • Formula Weight:60.08
  • MOL File:14464-46-1.mol
SILICA Property
  • Melting point 1610 °C(lit.)
  • Boiling point >100 °C(lit.)
  • Density 2.6 g/mL at 25 °C(lit.)
  • refractive index n20/D 1.544(lit.)
  • storage temp. 2-8°C
  • solubility insoluble in H2O, acid solutions; soluble in HF
  • form tablets (~0.5 g each)
  • color colorless hexagonal, hexane crystals, crystalline
  • crystal system square
  • Space group P42212
  • Lattice constant
    a/nmb/nmc/nmα/oβ/oγ/oV/nm3
    0.4980.4980.6949090900.1721
  • InChIKey VYPSYNLAJGMNEJ-UHFFFAOYSA-N
  • Proposition 65 List Silica, crystalline (airborne particles of respirable size)
  • EPA Substance Registry System Cristobalite (14464-46-1)
  • UNSPSC Code 41116107
  • NACRES NA.24
Safety
  • Hazard Codes  :Xn,T
  • Risk Statements  :48/20
  • Safety Statements  :22
  • OEB :D
  • OEL :TWA: 0.05 mg/m3
  • WGK Germany  :3
  • RTECS  :VV7340000
  • F  :3
  • HS Code  :28112290
  • Toxicity :TCLo inhalation in human: 16mppcf/8H/17
Hazard and Precautionary Statements (GHS)
  • Symbol(GHS)
  • Signal wordDanger
  • Hazard statements H372
  • Precautionary statements P260-P264-P270-P314-P501

SILICA Chemical Properties,Usage,Production

  • Chemical Properties Silicon dioxide/crystalline silica is a component of many mineral dusts and materials which melts to a glass at very high temperature.
  • Uses Because of its unique physical and chemical properties, crystalline silica has many uses. Commercially produced silica products include quartzite, tripoli, ganister, chert, and novaculite. Crystalline silica also occurs in nature as agate, amethyst, chalcedony, cristobalite, flint, quartz, tridymite, and, in its most common form, sand (IARC 1997). Naturally occurring silica materials are classified by end use or industry. Sand and gravel are produced almost exclusively for road building and concrete construction, depending on particle size and shape, surface texture, and porosity (IARC 1987).
  • Definition A hygroscopic substance such as activated alumina, calcium chloride, silica gel, or zinc chloride. Such substances adsorb water vapor from the air and are used to maintain a dry atmosphere in containers for food packaging, chemical reagents, etc.
  • Definition Cristobalite: a mineral form of silicon(IV) oxide, SiO2.
  • General Description Rounded silica sand is the naturally occurring sand usually mined from glacial deposits, sometimes called Ottawa sands. Silica sand is essentially made of quartz (SiO2 ) grains.
    Pressure range: 28 < σc < 35 MPa (4 < σc < 5 ksi)
    Advantages: Low cost, low density, wide availability, and excellent chemical resistance in acidic media except those containing free HF
    Drawbacks: Low permeability, low crushing strength, and poor resistance to flow back
  • Safety Profile Confirmed carcinogen with experimental carcinogenic and tumorigenic data. Poison by intratracheal route. An inhalation hazard. Human systemic effects by inhalation: cough, dyspnea, fibrosis. About twice as toxic as silica in causing sihcosis. See also other sdica 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 Respirable crystalline silica, primarily quartz dusts occurring in industrial and occupational settings, is known to be a human carcinogen based on sufficient evidence of carcinogenicity from studies in humans. Respirable crystalline silica was first listed in the Sixth Annual Report on Carcinogens in 1991 as reasonably anticipated to be a human carcinogen based on sufficient evidence of carcinogenicity from studies in experimental animals; the listing was revised to known to be a human carcinogen in the Ninth Report on Carcinogens in 2000.
  • Incompatibilities Violent reactions with powerful oxidizers: fluorine, chlorine trifluoride; manganese trioxide; oxygen difluoride, hydrogen peroxide, etc.; acetylene; ammonia.
  • Toxics Screening Level The Initial Threshold Screening Level for crystalline silica is 3 μg/m3, with an annual averaging time. This ITSL applies to quartz (CAS No. 14808-60-7) and three polymorphs: cristobalite (CAS No. 14464-46-1), tridymite (CAS No. 15468-32-3) and tripoli (CAS No. 1317-95-9).
  • Waste Disposal Sanitary landfill
SILICA Preparation Products And Raw materials
Raw materials
Preparation Products
SILICA Suppliers
Global(229)Suppliers
  • Supplier：
    Henan Tianfu Chemical Co.,Ltd.
  • Tel：+86-0371-55170693<br/>+86-19937530512
  • Email：info@tianfuchem.com
  • Country：China
  • ProdList：21628
  • Advantage：55
  • Supplier：
    career henan chemical co
  • Tel：+86-0371-86658258<br/>+8613203830695
  • Email：sales@coreychem.com
  • Country：China
  • ProdList：29859
  • Advantage：58
  • Supplier：
    RongNa Biotechnology Co.,Ltd
  • Tel：+86-86-13583358881<br/>+8618560316533
  • Email：Brad@rongnabiotech.com
  • Country：China
  • ProdList：3084
  • Advantage：58
SILICA Spectrum
14464-46-1, SILICARelated Search:
  • INORGANIC & ORGANIC CHEMICALS
  • Inorganics
  • 二氧化硅
  • 有机硅
  • 有机类
  • 固体类
  • 硅酸盐
  • 药用辅料
  • 添加剂1
  • 无机化工原料
  • 化工材料
  • 常规氧化物粉体-二氧化硅
  • 大化工
  • 化工产品-有机化工
  • 无机盐
  • 有机无机化工
  • 4464-46-1
  • 60676-86-1
  • (药用辅料)二氧化硅
  • 色酚 AS/AS-PH/AS-BS/AS-OL/AS-BO/ AS-VL/AS-IRG/AS-G/AS-E/AS-D/AS-P/AS-RL/AS-SW/AS-SG
  • 气象法白炭黑
  • 白炭黑 气相+沉淀
  • SILICA 白炭黑
  • 白炭黑2000目
  • 二氧化硅(微粉硅胶)
  • 方石英/二氯化硅 600目的
  • 白硅石,方英石,方石英
  • 方石英
  • 矽膠
  • 白硅石
  • 超细活性白炭黑
  • 白炭黑
  • 砂
  • 方英石
  • 14464-46-1
  • disilicic acid
  • SILICON OXIDE
  • SIO2
  • SILICA GEL 60
  • QUARTZ SAND
  • SILICON (IV) OXIDE
  • SILICIC ANHYDRIDE
  • SILICA STANDARD
  • SILICA SAND
  • SILICA GEL WHITE
  • SAND
  • LUDOX(R) TMA COLLOIDAL SILICA
  • KIESELGUHR
  • INFUSORIAL EARTH
  • DESICCANT
  • CRISTOBALITE
  • DAVISIL
  • PHARMPREP(R) 60 CC
  • SILICA GEL DESICCANT
  • SILICA GEL BEADS
  • TIANFU-CHEM CAS:14464-46-1 SILICA
  • SILICA ISO 9001：2015 REACH
  • calcineddiatomaceousearth

Home

My