"a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite"@en-us . . "114188034"@en-us . "115041277"^^ . . "silicon oxide"@en-us . . "0.0638437"^^ . "0.0"^^ . "a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite"@en-us . "15041277-n"^^ . . "0.0"^^ . . "silica"@en-us . . "0"^^ . "110792018"@en-us . . . "silicon dioxide"@en-us . . . . . . . . "silica"^^ . . "0.163886"^^ . "0.594897"^^ . . "0.128508"^^ . "0.0"^^ . "0.0488656"^^ . "0"^^ . .