silicon dioxide

GPTKB entity

Statements (63)
Predicate Object
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)
https://www.w3.org/2000/01/rdf-schema#label silicon dioxide
gptkbp:isAmorphousForm gptkb:fused_silica
gptkbp:isCrystallineForm gptkb:coesite
gptkb:cristobalite
gptkb:stishovite
gptkb:tridymite
quartz
gptkbp:IUPACName gptkb:silicon_dioxide
gptkbp:mainConstituent gptkb:center
gptkb:fruit
gptkb:coesite
gptkb:cristobalite
gptkb:stishovite
gptkb:tridymite
gptkb:lechatelierite
granite
ode
quartz
sand
flint
chalcedony
jasper
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
gptkb:VLT_Unit_Telescope_3_(Melipal)
gptkb:silica
gptkb:Crazy_lace_agate
gptkbp:bfsLayer 5