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Substance Name: Silicon dioxide
RN: 7631-86-9
UNII: ETJ7Z6XBU4
InChIKey: VYPSYNLAJGMNEJ-UHFFFAOYSA-N

Note

  • Transparent, tasteless crystals found in nature as agate, amethyst, chalcedony, cristobalite, flint, sand, QUARTZ, and tridymite. The compound is insoluble in water or acids except hydrofluoric acid.

Molecular Formula

  • O2-Si

Molecular Weight

  • 60.084
 

Classification Codes

Classification Codes

  • Pharmaceutic Aid (Dispersing and Suspending Agent)
  • Pharmaceutic Aid (Filtering Medium)
  • Pharmaceutic Aid (Suspending Agent)
  • Pharmaceutic Aid (Tablet and Capsule Diluent)
  • Pharmaceutic Aid (Thickening Agent)
  • Skin / Eye Irritant

Superlist Classification Codes

  • Overall Carcinogenic Evaluation: Group 1
  • Overall Carcinogenic Evaluation: Group 3

Names and Synonyms

Results Name

  • Silicon dioxide

Name of Substance

  • Diatomaceous earth
  • Diatomaceous silica
  • Diatomite
  • Infusorial earth
  • Silica
  • Siliceous earth
  • Siliceous earth, purified [NF]
  • Silicon dioxide
  • Silicon dioxide, fumed

MeSH Heading

  • Silicon dioxide

Synonyms

  • Acticel
  • Aerogel 200
  • Aerosil
  • Aerosil 300
  • Aerosil 380
  • Aerosil A 300
  • Aerosil bs-50
  • Aerosil E 300
  • Aerosil K 7
  • Aerosil M-300
  • Aerosil-degussa
  • AI3-25549
  • Amorphous silica dust
  • Amorphous silica gel
  • Cab-o-sil M-5
  • Cabosil N 5
  • Cabosil st-1
  • Carplex
  • Carplex 30
  • Carplex 80
  • Caswell No. 734A
  • CCRIS 3699
  • Celite Superfloss
  • Chalcedony
  • CI 7811
  • Colloidal silica
  • Colloidal silicon dioxide
  • Corasil II
  • Cristobalite
  • Diatomaceous earth
  • Diatomaceous earth, calcined
  • Dimethyl siloxanes and silicones
  • Dri-Die
  • EC 231-545-4
  • EINECS 231-545-4
  • ENT 25,550
  • EPA Pesticide Chemical Code 072605
  • Extrusil
  • Fossil flour
  • Fused silica
  • Glass
  • Hi-Sil
  • HK 400
  • Hydrophobic silica 2482
  • Ludox hs 40
  • Manosil vn 3
  • Micro-cel
  • Min-U-Sil
  • N1030
  • Nalco 1050
  • Nalfloc N 1050
  • Neosil
  • Neosyl
  • Opal
  • Pigment White 27
  • Porasil
  • Positive sol 130M
  • Positive sol 232
  • Quartz
  • Quso 51
  • Quso G 30
  • Santocel
  • Sg-67
  • Silanox 101
  • Silica
  • Silica (SiO2)
  • Silica particles
  • Silica, amorphous
  • Silica, amorphous fused
  • Silica, colloidal
  • Siliceous earth, purified
  • Silicic anhydride
  • Silicon dioxide
  • Silicon dioxide (amorphous)
  • Silicon dioxide, colloidal
  • Silicon oxide
  • Silikil
  • Sillikolloid
  • Siloxid
  • Sipernat
  • Snowtex 30
  • Snowtex O
  • Superfloss
  • Syton 2X
  • Tokusil TPLM
  • Tridymite
  • U 333
  • Ultrasil VH 3
  • Ultrasil VN 3
  • UNII-ETJ7Z6XBU4
  • Vitasil 220
  • Vulkasil S
  • Wessalon
  • White carbon
  • Zeofree 80
  • Zipax
  • Zorbax sil

Systematic Names

  • CAB-O-SIL N-70TS
  • Silica
  • Silica 2482, hydrophobic
  • Silicon dioxide
  • Silicon dioxide, chemically prepared

Superlist Names

  • Amorphous silica
  • Silica
  • Silica slurry
  • Silica, amorphous, fumed
  • Silicon dioxide

Registry Numbers

CAS Registry Number

  • 7631-86-9

FDA UNII

  • ETJ7Z6XBU4

Other Registry Numbers

  • 1004994-79-9
  • 1006727-26-9
  • 1007355-41-0
  • 102381-58-8
  • 1065194-86-6
  • 107497-59-6
  • 108727-71-5
  • 11139-72-3
  • 11139-73-4
  • 113384-41-1
  • 1151767-34-8
  • 12125-13-2
  • 122985-48-2
  • 125623-17-8
  • 1262535-72-7
  • 126879-14-9
  • 126879-30-9
  • 126879-49-0
  • 12737-36-9
  • 12753-63-8
  • 12765-74-1
  • 127689-16-1
  • 12774-28-6
  • 127831-27-0
  • 1340-09-6
  • 1354383-62-2
  • 136303-13-4
  • 1364664-19-6
  • 1365618-91-2
  • 1367454-14-5
  • 136881-80-6
  • 137263-03-7
  • 1373553-98-0
  • 1377807-27-6
  • 1384115-98-3
  • 138860-82-9
  • 139074-73-0
  • 1396528-08-7
  • 1431704-97-0
  • 1431704-98-1
  • 1431705-01-9
  • 145537-54-8
  • 145686-91-5
  • 145808-77-1
  • 146585-72-0
  • 149779-02-2
  • 150633-20-8
  • 152206-35-4
  • 152787-33-2
  • 155552-25-3
  • 155575-05-6
  • 1675960-65-2
  • 1678497-74-9
  • 171264-18-9
  • 172306-09-1
  • 173299-41-7
  • 179046-03-8
  • 1844839-43-5
  • 184654-53-3
  • 1848955-43-0
  • 185461-90-9
  • 188357-77-9
  • 191289-29-9
  • 1933499-98-9
  • 203526-86-7
  • 206770-31-2
  • 207868-97-1
  • 2098352-97-5
  • 2098352-98-6
  • 2098352-99-7
  • 2098354-30-2
  • 2135813-99-7
  • 2148930-88-3
  • 2170638-70-5
  • 2174974-17-3
  • 2174974-56-0
  • 217643-58-8
  • 231629-15-5
  • 247900-77-2
  • 250579-70-5
  • 250579-78-3
  • 264907-28-0
  • 330152-64-2
  • 341028-71-5
  • 368432-40-0
  • 37220-24-9
  • 37241-25-1
  • 37334-65-9
  • 37340-45-7
  • 37380-93-1
  • 39336-66-8
  • 39372-58-2
  • 39409-25-1
  • 39443-40-8
  • 39456-81-0
  • 402735-49-3
  • 402828-37-9
  • 402828-39-1
  • 402828-40-4
  • 50813-13-3
  • 50926-93-7
  • 50935-83-6
  • 51542-57-5
  • 51542-58-6
  • 52350-43-3
  • 53468-64-7
  • 55599-33-2
  • 56645-27-3
  • 56731-06-7
  • 573986-27-3
  • 574743-92-3
  • 60572-11-4
  • 61673-46-9
  • 62655-73-6
  • 636575-18-3
  • 67167-16-2
  • 70536-23-1
  • 70536-61-7
  • 70563-35-8
  • 761458-29-1
  • 781662-69-9
  • 78207-17-7
  • 83589-56-4
  • 83652-92-0
  • 865611-44-5
  • 871110-01-9
  • 87501-59-5
  • 89493-21-0
  • 895163-77-6
  • 900794-70-9
  • 9049-77-8
  • 910556-60-4
  • 916674-46-9
  • 942129-91-1
  • 97343-62-9
  • 97709-14-3
  • 98226-40-5
  • 98253-25-9

System Generated Number

  • 0007631869

Structure Descriptors

InChI

1S/O2Si/c1-3-2

InChIKey

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

Smiles

[Si](=O)=O

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rat LC inhalation > 200gm/m3/1H (200000mg/m3) LUNGS, THORAX, OR RESPIRATION: "FIBROSIS, FOCAL (PNEUMOCONIOSIS)" National Technical Information Service. Vol. OTS0537735,
rat LCLo inhalation 2190mg/m3/4H (2190mg/m3) LUNGS, THORAX, OR RESPIRATION: DYSPNEA National Technical Information Service. Vol. OTS0537804,
rat LDLo oral 5gm/kg (5000mg/kg)   National Technical Information Service. Vol. OTS0537804,