| 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." See "FLUORIDES." |
| Exposure Assessment | |
| BEI | Fluorides in urine = 2 mg/L prior to shift or 3 mg/L at end of shift; (Repeated measurements recommended.) |
| TIH | Yes |
| TLV (ACGIH) | 2.5 mg/m3, as F |
| PEL (OSHA) | 2.5 mg/m3, as F |
| MAK | 1 mg/m3, as F, inhalable fraction |
| Lethal Concentration | LC50 (rat) = 2,272 ppm |
| Explanatory Notes | For occupational exposure limits, see "Fluorides." |
| Adverse Effects | |
| Toxic Pneumonitis | Yes |
| Dermatotoxin | Skin Burns |
| Links to Other NLM Databases | |
| Health Studies | Human Health Effects from Hazardous Substances Data Bank: |
| Toxicity Information | |
| Chemical Information | |
| Biomedical References | |
| Related Information in HazMap | |
| Diseases | Occupational diseases associated with exposure to this agent: |
| Processes | Industrial Processes with risk of exposure: |
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." See "FLUORIDES."
Exposure Assessment
BEI
Fluorides in urine = 2 mg/L prior to shift or 3 mg/L at end of shift; (Repeated measurements recommended.)
TIH
Yes
TLV (ACGIH)
2.5 mg/m3, as F
PEL (OSHA)
2.5 mg/m3, as F
MAK
1 mg/m3, as F, inhalable fraction
Lethal Concentration
LC50 (rat) = 2,272 ppm
Explanatory Notes
For occupational exposure limits, see "Fluorides."
Adverse Effects
Toxic Pneumonitis
Yes
Dermatotoxin
Skin Burns
Links to Other NLM Databases
Toxicity Information
Chemical Information
Biomedical References
Related Information in HazMap