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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
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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
- Aerosil 200
- 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
- 1206890-01-8
- 12125-13-2
- 122985-48-2
- 125623-17-8
- 1259281-12-3
- 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
- 1474086-62-8
- 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
- 173358-69-5
- 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
- 2067262-90-0
- 206770-31-2
- 207868-97-1
- 2095803-93-1
- 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
- 2215023-93-9
- 2215943-42-1
- 2226478-11-9
- 2300155-82-0
- 231629-15-5
- 2409669-48-1
- 2412595-05-0
- 2412795-58-3
- 2413104-54-6
- 2435623-01-9
- 2454600-76-9
- 247900-77-2
- 250579-70-5
- 250579-78-3
- 264907-28-0
- 2699030-77-6
- 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
- 736175-62-5
- 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
InChI=1S/O2Si/c1-3-2InChIKey
VYPSYNLAJGMNEJ-UHFFFAOYSA-NSmiles
O=[Si]=OToxicity
| 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, |