| Identification | Back Directory | [Name]
SILICA | [CAS]
14464-46-1 | [Synonyms]
w006
SIO2
SAND
SILEX
wgl300
43-63c
SIO2/SI
DAVISIL
crysvarl
Sibelite
BLUE GEL
DESICCANT
CELITE(R)
SILICADUST
KIESELGUHR
SILICA 3-6
SILICA TLC
SILICA NO 2
SILICA SAND
QUARTZ SAND
NATRASORB T
SILICA 7-12
SILICA 0-63
SILICA GELS
SILICA NO 1
DAVISIL(TM)
FUMED SILICA
crystobalite
CRISTOBALITE
SILICAR CC-4
SILICA G-TLC
SILICA GEL G
SILICA 10-18
SILICA 12-26
SILICA 18-32
SILICA F-TLC
SILICA 32-63
SILICA GEL 7
SILICA GEL 7G
SILICA 32-100
SILICA GEL 22
SILICA 63-100
SILICA 63-200
SILICA GEL 30
SILICA GEL 60
SILICON OXIDE
SILICA GF-TLC
CAB-O-SIL M-5
AEROSIL(R) 200
SILICA GEL 100
SILICA GEL 120
SILICA 200-500
SILICA 100-200
SYTON(R) HT-50
MP SILICA G-TLC
SILICA STANDARD
SILICA 3-6, 100
SILICA GEL 60 G
SILICA GEL 60 H
SILICAGEL LC60A
BLUE SILICA GEL
SILICAGEL LC100A
LICHROSORB(R) 60
SILICA GEL RUBIN
SILICA GEL WHITE
CAB-O-SIL(R) M-5
INFUSORIAL EARTH
SILICA GEL BEADS
SILICA 7-12, 100
metacristobalite
SILICA 18-32, 100
SILICA 10-18, 100
SILICA GEL 60-C18
SILICA 32-63, 100
Fine grain sand
calcineddiatomite
SILICIC ANHYDRIDE
POLYGOSIL(R) 60-5
POLYGOSIL(R) 60-7
POLYGOSIL(R) 100-5
POLYGOSIL(R) 100-7
POLYGOSIL(R) 300-7
POLYGOSIL(R) 60-10
SILICON (IV) OXIDE
cristobalite(sio2)
Silica crystalline
ALPHA-CRISTOBALITE
SAND, WHITE QUARTZ
BLUE GEL DESICCANT
SILICA 63-200, 100
alpha-crystobalite
PHOSPHOROUS SILICA
PHARMPREP(R) 60 CC
SILICA GEL 60 HF254
SILICA GEL 60 GF254
silica,cristobalite
SILICA 100-200, 100
silice,cristobalite
POLYGOPREP(R) 60-20
POLYGOPREP(R) 60-30
POLYGOPREP(R) 60-50
POLYGOPREP(R) 60-80
POLYGOSIL(R) 1000-7
POLYGOSIL(R) 100-10
POLYGOPREP(R) 60-12
POLYGOPREP(R) 60-130
ORANGE GEL DESICCANT
SILICA GEL DESICCANT
POLYGOPREP(R) 100-12
POLYGOPREP(R) 100-20
POLYGOPREP(R) 100-30
POLYGOPREP(R) 100-50
POLYGOPREP(R) 100-80
POLYGOPREP(R) 300-12
POLYGOPREP(R) 300-20
POLYGOPREP(R) 300-30
POLYGOPREP(R) 300-50
POLYGOPREP(R) 100-130
CRYSTALLINESILICADUST
POLYGOPREP(R) 1000-12
POLYGOPREP(R) 1000-20
POLYGOPREP(R) 1000-30
POLYGOPREP(R) 1000-50
SILICIUM DIOXIDE BEADS
Cristobalite Respirable
Crystobalite total dust
SILICA GEL 60 SILANIZED
SILICA GEL 60G (TYPE60)
SILICA GEL-BEADS ORANGE
SILICA GEL 60H (TYPE60)
DESICCANT NON-INDICATING
SILICA WITH FLUORESCENCE
PRECIPITATED SILICIC ACID
calcineddiatomaceousearth
DRYING AGENT SILICA GEL PS
SILICA GEL PS DRYING AGENT
SILICA ISO 9001：2015 REACH
SILICA, ANALYTICAL STANDARD
SILICA GEL 60HF254 (TYPE60)
SILICA GEL 60GF254 (TYPE60)
SILICA GEL (DAVISIL) SORBENT
LUDOX(R) CL COLLOIDAL SILICA
LUDOX(R) LS COLLOIDAL SILICA
LUDOX(R) TMA COLLOIDAL SILICA
LUDOX(R) CL-X COLLOIDAL SILICA
Silicon (IV) Oxide, 1 - 4.0 mm
CRYSTALLINE-CRISTOBALITESILICA
crystallinesilica,cristobalite
SILICA GEL DESICCANT, BLUE GEL
silica,crystalline-cristobalite
LUDOX(R) HS-30 COLLOIDAL SILICA
LUDOX(R) HS-40 COLLODIAL SILICA
LUDOX(R) SM-30 COLLOIDAL SILICA
LUDOX(R) TM-40 COLLOIDAL SILICA
LUDOX(R) TM-50 COLLOIDAL SILICA
LUDOX(R) AM-30 COLLOIDAL SILICA
LUDOX(R) AS-30 COLLOIDAL SILICA
LUDOX(R) AS-40 COLLOIDAL SILICA
SILICA GEL SELF INDICATING BLUE
SILICA GEL DESICCANT, ORANGE GEL
ACID WASHED STANDARD SUPER-CEL NF
freecrystallinesilica,cristobalite
crystallinesilica(non-specificname)
crystallinesilicondioxide,cristobalite
SILICA GEL TEL-TALE DESICCANT, INDICATING
MICRO PARTICLES BASED ON SILICIUM DIOXIDE
BEADS BASED ON SILICIUM DIOXIDE, MICROSIZE
SEA SAND, PURIFIED BY ACID AND CALCINED GR
~99%, 0.5-10 μM (approx. 80% between 1-5 μM)
SILICON DIOXIDE, HEXAMETHYLDISILAZINE TREATED
SEA SAND ACID WASHED AND CALCINED, R. G. , REAG. DAB
SILICON DIOXIDE, OCTAMETHYLCYCLOTETRASILOXANE TREATED
SEA SAND CALCINED, CRUDE, FOR CLEANING P LATINUM CRUCIBLES
30%inethyleneglycolcolloidaldispersion0.02micronparticlesinliquid | [EINECS(EC#)]
238-878-4 | [Molecular Formula]
O2Si | [MDL Number]
MFCD00011232 | [MOL File]
14464-46-1.mol | [Molecular Weight]
60.08 |
| Chemical Properties | Back Directory | [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. | [Appearance]
Silicon dioxide/crystalline silica is a component of many mineral dusts and materials which melts to a glass at very high temperature. | [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/nm | b/nm | c/nm | α/o | β/o | γ/o | V/nm3 | | 0.498 | 0.498 | 0.694 | 90 | 90 | 90 | 0.1721 |
| [InChIKey]
VYPSYNLAJGMNEJ-UHFFFAOYSA-N | [EPA Substance Registry System]
Cristobalite (SiO2)(14464-46-1) |
| Safety Data | Back Directory | [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 | [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 | [Toxicity]
TCLo inhalation in human: 16mppcf/8H/17 |
| Hazard Information | Back Directory | [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. | [First aid]
If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomit. | [Incompatibilities]
Violent reactions with powerful oxidizers: fluorine, chlorine trifluoride; manganese trioxide; oxygen difluoride, hydrogen peroxide, etc.; acetylene; ammonia. | [Chemical Properties]
Silicon dioxide/crystalline silica is a component of many mineral dusts and materials which melts to a glass at very high temperature. | [Waste Disposal]
Sanitary landfill | [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).
| [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
| [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. | [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). |
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