|
gptkbp:instanceOf
|
gptkb:chemical_compound
|
|
gptkbp:appearance
|
white powder or colorless crystals
|
|
gptkbp:band
|
covalent
|
|
gptkbp:bandGap
|
8.9 eV (quartz)
|
|
gptkbp:boilingPoint
|
2230 °C
|
|
gptkbp:CASNumber
|
7631-86-9
|
|
gptkbp:chemicalFormula
|
SiO2
|
|
gptkbp:component
|
oxygen
silicon
|
|
gptkbp:crystalSystem
|
varies (quartz, cristobalite, tridymite, etc.)
|
|
gptkbp:density
|
2.648 g/cm³
|
|
gptkbp:EC_number
|
231-545-4
|
|
gptkbp:foundIn
|
gptkb:water
Earth's crust
animals
minerals
plants
rocks
|
|
gptkbp:hardnessMohs
|
7 (quartz)
|
|
gptkbp:isAmorphousForm
|
gptkb:fused_silica
|
|
gptkbp:isCrystallineForm
|
gptkb:coesite
gptkb:cristobalite
gptkb:stishovite
gptkb:tridymite
quartz
|
|
gptkbp:IUPACName
|
gptkb:silicon_dioxide
|
|
gptkbp:mainConstituent
|
gptkb:ode
gptkb:center
gptkb:fruit
gptkb:coesite
gptkb:cristobalite
gptkb:stishovite
gptkb:tridymite
gptkb:lechatelierite
gptkb:granite
gptkb:jasper
quartz
sand
flint
chalcedony
|
|
gptkbp:meltingPoint
|
1713 °C
|
|
gptkbp:molecularWeight
|
60.08 g/mol
|
|
gptkbp:otherName
|
gptkb:silica
|
|
gptkbp:PubChem_CID
|
24261
|
|
gptkbp:refractiveIndex
|
1.458 (fused silica)
|
|
gptkbp:solubility
|
insoluble
|
|
gptkbp:structureType
|
network solid
|
|
gptkbp:thermalConductivity
|
1.4 W/(m·K) (quartz)
|
|
gptkbp:toxicity
|
inhalation of fine particles can cause silicosis
|
|
gptkbp:UNII
|
ETJ7Z6XBU4
|
|
gptkbp:usedIn
|
gptkb:ceramics
gptkb:optical_fibers
gptkb:food_additive_(E551)
concrete
electronics
glass making
|
|
gptkbp:bfsParent
|
gptkb:Onyx
gptkb:Rose_quartz
|
|
gptkbp:bfsLayer
|
5
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
silicon dioxide
|