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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

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Reference substances

Reference substances

Currently viewing:
IUPAC name:
Silicon dioxide

Inventory

EC number:
231-545-4
EC name:
Silicon dioxide
CAS number:
7631-86-9
CAS number:
7631-86-9
Synonyms
Names:
Amorphous synthetic silica gel, crystalline-free
Colloidal silicon dioxide (European Pharmacopoeia II)
Highly dispersed silica
Hochdisperses Silizium Dioxid (Deutsches Arzneibuch)
Light anhydrous silicic acid (Japanese Pharmacopoeia)
Precipitated silica
Pyrogenic (fumed) amorphous silica
Pyrogenic colloidal silica
Silica
Silica colloidalis anhydrica
Silica gel
Silica; amorphous, fumed, crystalline-free
Silicium dioxydatum dispersum (Östreichisches Arzneibuch)
Silicon dioxide (7631-86-9, 112945-52-5, 112926-00-8)
Silicon dioxide (US-Food Chemicals Codex)
Silicon dioxide (wet process)
Silicon dioxide amorphous (WHO, Technical Report Series)
Silicon dioxide, colloidal (fumed)
Siliziumdioxid
Identifier:
IUPAC name
dioxosilane
Identifier:
IUPAC name
silicon dioxide
Identifier:
IUPAC name
silicon dioxide
Identifier:
IUPAC name
silicon dioxide equivalent
Identifier:
other: InChl
InChI=1/O2Si/c1-3-2
Identifier:
other: InChl
InChI=1S/O2Si/c1-3-2
Identifier:
other: SMILES notation
O=[Si]=O

Molecular and structural information

Molecular formula:
O2Si
Molecular weight:
60.074
SMILES notation:
O=[Si]=O
InChl:
InChI=1/O2Si/c1-3-2
Structural formula:
Chemical structure

Related substances

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Identifier:
CAS number
Identity:
112945-52-5
Identifier:
CAS number
Identity:
112926-00-8
Identifier:
CAS number
Identity:
7631-86-9