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