Selenium hexafluoride
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CAS
7783-79-1
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SeF6
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RTECS
VS9450000
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Synonyms & Trade Names
Selenium fluoride
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DOT ID & Guide
2194 / 125
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Exposure
Limits
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NIOSH REL: TWA 0.05 ppm
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OSHA PEL: TWA 0.05 ppm (0.4 mg/m3)
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IDLH
2 ppm
See: 7783791
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Conversion
1 ppm = 7.89 mg/m3
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Physical Description
Colorless gas.
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MW: 193.0
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BP: -30°F
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FRZ: -59°F
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Sol: Insoluble
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VP: >1 atm
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IP: ?
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RGasD: 6.66
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Fl.P: NA
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UEL: NA
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LEL: NA
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Nonflammable Gas
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Incompatibilities & Reactivities
Water [Note: Hydrolyzes very slowly in cold water.]
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Measurement Methods
None available
See: NMAM or OSHA Methods |
Personal Protection & Sanitation (See protection)
Skin: No recommendation
Eyes: No recommendation
Wash skin: No recommendation
Remove: No recommendation
Change: No recommendation
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First Aid (See procedures)
Breathing: Respiratory support
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Respirator Recommendations
NIOSH/OSHA
Up to 0.5 ppm:
(APF = 10) Any supplied-air respirator
Up to 1.25 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode
Up to 2 ppm:
(APF = 50) Any supplied-air respirator that has a tight-fitting facepiece and is operated in a continuous-flow mode
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece
Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus
Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern/Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection
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Exposure Routes
inhalation
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Symptoms
In animals: pulmonary irritation, edema
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Target Organs
respiratory system
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See also: INTRODUCTION
See ICSC CARD: 0947 See MEDICAL TESTS: 0203
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