Agent Name |
Silicon tetrafluoride |
CAS Number |
7783-61-1 |
Formula |
F4-Si |
Major Category |
Toxic Gases & Vapors |
Synonyms |
Perfluorosilane; Silane, tetrafluoro-; Silicon fluoride (SiF4); Tetrafluorosilane; UN1859; [ChemIDplus] |
Category |
Corrosive Gases |
Description |
Colorless gas with a pungent odor; [HSDB] |
Sources/Uses |
Used to manufacture silane, silicon for electronics, and fluosilicic acid; Used as a sealant in oil well drilling; [HSDB] |
Comments |
On contact with water, may hydrolyze to form fluosilicic acid and silicon dioxide. May be corrosive to the skin, eyes, and respiratory tract; Inhalation may cause pulmonary edema; Chronic exposure may cause fluorosis; [CHEMINFO MSDS] See "Fluorosilic acid." |
Exposure Assessment |
Skin Designation (ACGIH) |
Not evaluated |
TIH |
Yes |
Lethal Concentration |
LC50 (rats) = 2,272 ppm |
Explanatory Notes |
For occupational exposure limits, see "Fluorides." |
Flammability (NFPA) |
0: will not burn |
Adverse Effects |
Toxic Pneumonitis |
Yes |
Dermatotoxin |
Skin Burns |
Links to Other NLM Databases |
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