O2Si
60.084 g/mol
Industrial ChemicalWarning
SILICON DIOXIDE
CAS7631-86-9EC231-545-4
Category
Industrial Chemical
Compound Class
Other
Primary Use
Silica source for industrial manufacturing
Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula SiO2. It is commonly found in nature as quartz and is the major constituent of sand.
Sand productionQuartz mineral sourceRaw material for glass and ceramics manufacturing
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
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Industrial chemical intermediate
Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H350May cause cancer
H372Causes damage to organs through prolonged or repeated exposure
H373May cause damage to organs through prolonged or repeated exposure
H341Suspected of causing genetic defects
H320Causes eye irritation
Customs Tariff Classification
The international HS code for SILICON DIOXIDE (CAS 7631-86-9) is 2811.22.
HS code (international, 6-digit)
2811.22
EU CN code (8-digit)
2811 22 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
dioxosilane
InChIKey
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
SMILES
O=[Si]=O
Synonyms (427)
- D-132
- E-551
- MCM-41
- Celpure(R) P100, meets USP/NF testing specifications
- Celpure(R) P1000, meets USP/NF testing specifications
- Celpure(R) P300, meets USP/NF testing specifications
- Celpure(R) P65, meets USP/NF testing specifications
- 2080 Dentistry Night Fresh
- 2080 Dentistry Night Repair
- 25wt% Silicon Oxide in Water
- 28TAK DOUX TOOTH
- 380, Aerosil
- AF-SO 25R
- AW Standard Super-Cel(R) NF
- Accusand
- Acticel
- Admafine SO 25H
- Admafine SO 25R
- Admafine SO 32H
- Admafine SO-C 2
- Admafine SO-C 3
- Aerogel 200
- Aerosil
- Aerosil 130
- Aerosil 200
- Aerosil 300
- Aerosil 380
- Aerosil A 300
- Aerosil E 300
- Aerosil K 7
- Aerosil M-300
- Aerosil bs-50
- Aerosil-degussa
- Agate
- Agate (SiO2)
- Amethyst
- Amorphous quartz
- Amorphous silica
- Amorphous silica dust
- Amorphous silica gel
- Aquafil
- As 1 (silica)
- Aventurine 8101
- BF 100
- Borsil P
- CAB-O-SIL N-70TS
- CELATOM(R) FW-60
- CI 7811
- CP-SilicaPLOT
- CRS 1102RD8
- Cab-O-Sil M-5P
- Cab-O-grip II
- Cab-O-sil
- Cab-O-sperse
- Cab-o-sil M-5
- Cabosil N 5
- Cabosil st-1
- Calcined diatomite
- Carneol 8109
- Carplex
- Carplex 30
- Carplex 80
- Caswell No. 734A
- Cataloid
- Celite (R) 535
- Celite 503
- Celite 545
- Celite superfloss
- Celite(R) 503, CP
- Celite(R) 512 medium
- Celite(R) 535, CP
- Celite(R) 545
- Celite(R) 545, CP
- Celite(R), acid-washed
- Chalcedony
- Cherts
- Christensenite
- Chromosorb P
- Chrysolith 6X
- Chrysoprase 8113
- Cinis comp A 21 Special Order
- Citrine 8114
- Coesite
- Colloidal silicon dioxide
- Corasil II
- Corning 7940
- Cristobalite
- Cristobalite (SiO2)
- Cristobalite asbestos
- Cristobalite dust
- Cryptocrystalline quartz
- Cryst.-free silica gel
- Crystalline silica
- Crystallized silicon dioxide
- Crystoballite
- Crysvarl
- D & D
- Denka F 90
- Denka FB 30
- Denka FB 44
- Denka FB 74
- Denka FS 30
- Dental type silica
- Diatomaceous earth non-washed
- Diatomaceous silica
- Dicalite
- Dioxide, Silicon
- Dioxosilane
- Dioxosilane; Kieselguhr
- Dr. Zenni Kids tooth (Baby)
- Dri-Die
- Dri-Die 67
- Dri-Die insecticide 67
- ED-C (silica)
- EF 10
- ENT 25,550
- EQ 912
- Elsil 100
- Elsil BF 100
- Extrusil
- F 125 (silica)
- F 160 (silica)
- F 44
- F 44 (filler)
- FB 20 (silica)
- FB 5 (silica)
- FRESH MINT TEETH WHITENING
- FS 74
- Filter agent, Celite(R) 545
- Fine grain sand
- Fire Agate
- Fire Agate 8116
- Flintshot
- Fossil flour
- Fruity Scrub Body Exfoliation
- Fumed silica
- Fused quartz
- Fused silica
- Fuselex
- Fuselex RD 120
- Fuselex RD 40-60
- Fuselex ZA 30
- G32, Quso
- GP 11I
- GP 7I
- Gold bond R
- HI-Sil
- HK 400
- Honest-Paste Kids
- Hydrophobic silica 2482
- Hyflo(R) Super-Cel(R), CP
- INS NO.551
- Imsil
- Jacksons Cell Salts SILICA 6X
- Jasper 17 Special Order
- Keatite (SiO2)
- Kieselgel
- Kieselguhr (filter aids)
- Kieselsaeureanhydrid
- Ludox
- Ludox hs 40
- MIN-U-sil alpha quartz
- MR 84
- Manosil vn 3
- Metacristobalite
- Microcrystalline quartz
- Min-U-Sil
- Nalcast
- Nalco 1050
- Nalcoag
- Nalfloc N 1050
- Naturasil Scars
- Naturasil Stretch Marks
- Nekvnro SCAR REMOVAL SHEETS
- Neosil
- Neosyl
- Novaculite
- Nyacol
- Nyacol 1430
- Nyacol 830
- OPRECARE 12
- OPRECARE 24
- OPRECARE 3SET (07,12,21)
- Olea Olidental
- Optocil
- Optocil (quartz)
- PHYENLIMCIDE TOOTHPASTE
- Porasil
- Positive sol 130M
- Positive sol 232
- Precipitated amorphous silica
- Pyrogenic colloidal silica
- QG 100
- QUARTZ (SIO2)
- QuarZ
- Quartz
- Quartz 30
- Quartz 60 Special Order
- Quartz 8
- Quartz [Silica, crystalline]
- Quartz chips
- Quartz dust
- Quartz glass
- Quartz sand
- Quartz silica
- Quartz wool
- Quartz-beta
- Quartzine
- Quarz (SiO2)
- Quarz cryst., 0.6-1.3 mm
- Quarzsand
- Quarzsand [German]
- Quazo puro
- Quazo puro [Italian]
- Quso 51
- Quso F-22
- Quso G 30
- Quso G32
- RADIOLITE 700
- RD 120
- RD 8
- Rancosil
- Red Jasper
- Red Jasper 8138
- Red Quartz
- Red Quartz 8139
- Rock crystal
- Rose Quartz 8142
- Rose quartz
- Rxhomeo Homeopathic Combo 21
- S-Col
- SBA-15 Molecular Sieve
- SCAR REMOVAL SHEETS
- SF 35
- SILICEA 200ck
- SILICON DIOXIDE
- SKIN ERUPTIONS
- SYLOID SILICA GEL
- Sand
- Sand 50-70 mesh
- Sand low in iron
- Sand sulphuric acid washed
- Sand, Sea
- Sand, acid washed
- Sand, white quartz
- Sand, white quartz, CP, beads
- Sandstone
- Sandstone 8144
- Santocel
- Sea sand
- Sea sand, acid washed
- Sg-67
- Sibelite M 3000
- Sibelite M 4000
- Sibelite M 6000
- Sicron F 300
- Siderite (SiO2)
- Siilca
- Sikron F 100
- Sil-Co-Sil
- Silane, dioxo-
- Silanox 101
- Silica
- Silica (SiO2)
- Silica 20 Special Order
- Silica 2482, hydrophobic
- Silica 30 Special Order
- Silica 6 Special Order
- Silica Gel 60-100 MESH
- Silica Microspheres
- Silica dust
- Silica fibers, 1/4'' long
- Silica gel 40-60Angstoms
- Silica gel 60, 230-400 mesh
- Silica gel G
- Silica gel I
- Silica gel, 70-200 mesh (TLC)
- Silica gel, ASTM
- Silica gel, CP, blue, beads
- Silica gel, CP, white, beads
- Silica gel, large pore
- Silica glass
- Silica marina
- Silica micropowder
- Silica particles
- Silica slurry
- Silica vitreous
- Silica, amorphous
- Silica, amorphous fused
- Silica, amorphous, fumed
- Silica, colloidal
- Silica, crystalline - fused
- Silica, crystalline quartz
- Silica, fumed
- Silica, fumed, powder
- Silica, fused
- Silica, mesostructured
- Silicagel
- Silicagel 60A 20-45 micron
- Silicagel 60A 35-70 micron
- Silicagel 60A 40-63 micron
- Silicagel 60A 6-35 micron
- Silicagel LC60A 40-63 micron
- Silicea
- Silicea 12X
- Silicea 200C
- Silicea 200X
- Silicea 30C
- Silicea 30X
- Silicea 3X
- Silicea 6X
- Silicea 8012
- Silicea Organic Cane Sugar
- Siliceous sand, CP
- Silicic anhydride
- Silicon Dioxide Nanospheres
- Silicon dioxide (NF)
- Silicon dioxide (amorphous)
- Silicon dioxide (vitreous)
- Silicon dioxide Nanopowder
- Silicon dioxide, acid-washed
- Silicon dioxide, colloidal
- Silicon dioxide, fumed
- Silicon oxide
- Silicon oxide, di- (sand)
- Silicon(IV) oxide
- Silicon(IV) oxide (SiO2)
- Silicon(IV) oxide, amorphous
- Silicone dioxide
- Silikil
- Silikill
- Siliziumdioxid
- Sillikolloid
- Siloxid
- Siltex
- Silver bond B
- Sipernat
- Snowit
- Snowtex 30
- Snowtex O
- Spectrosil
- Stishovite (SiO2)
- Super-cel
- Superfloss
- Suprasil
- Suprasil W
- Syloid 244
- Synthetic amorphous silica
- Syton 2X
- TGL 16319
- TONICPET 12
- TOOTH NOTE AQUA MINT
- TOOTH NOTE PINEAPPLE MINT
- Tiger-eye
- Tigers Eye
- Tigers Eye 8152
- Tokusil TPLM
- Tridimite
- Tridimite [French]
- Tridymite
- Tridymite (SiO2)
- Tridymite 118
- Tridymite dust
- U 333
- Ultrasil VH 3
- Ultrasil VN 3
- Uniform Silica Microspheres
- Vitasil 220
- Vitreosil IR
- Vitreous quartz
- Vitreous silica
- Vitrified silica
- Vulkasil
- Vulkasil S
- W 006
- W 12 (Filler)
- WGL 300
- Wessalon
- White carbon
- Y 40
- Zeofree 80
- Zipax
- Zorbax
- Zorbax sil
- alpha-Cristobalite
- alpha-Crystobalite
- alpha-Quartz
- beta-Quartz
- colloidal silica
- silica (silicon dioxide)
- silica gel 60g (type60)
- silica gel 60gf254(type60)
- silica gel 60h (type60)
- silica gel 60hf254(type60)
- silica gel white
- silica sand
- silicon dioxide (silica)
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