September 2010
NIOSH Publication Number 2010-168c

Sulfur pentafluoride

Synonyms & Trade Names
Disulfur decafluoride, Sulfur decafluoride
CAS No.
5714-22-7
RTECS No.
WS4480000
DOT ID & Guide
Formula
S2F10
Conversion
1 ppm = 10.39 mg/m3
IDLH
1 ppm
See: 5714227
Exposure Limits
NIOSH REL
: C 0.01 ppm (0.1 mg/m3)
OSHA PEL
†: TWA 0.025 ppm (0.25 mg/m3)
Measurement Methods

None available
Physical Description
Colorless liquid or gas (above 84°F) with an odor like sulfur dioxide.
MW:
254.1
BP:
84°F
FRZ:
-134°F
Sol:
Insoluble
VP:
561 mmHg
IP:
?
Sp.Gr(32°F): 2.08
Fl.P:
NA
UEL:
NA
LEL:
NA
RGasD:
8.77
Noncombustible Liquid Nonflammable Gas
Incompatibilities & Reactivities
None reported
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin, respiratory system; in animals: pulmonary edema, hemorrhage
Target Organs
Eyes, skin, respiratory system, central nervous system
Personal Protection/Sanitation
(See protection codes)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: No recommendation
Remove: When wet or contaminated
Change: No recommendation
Provide: Eyewash, Quick drench
First Aid
(See procedures)
Eye: Irrigate immediately
Skin: Soap wash immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations

NIOSH

Up to 0.1 ppm:
(APF = 10) Any supplied-air respirator

Up to 0.25 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode

Up to 0.5 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

Up to 1 ppm:
(APF = 1000) Any supplied-air respirator operated in a pressure-demand or other positive-pressure mode

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 acid gas canister
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

See also: INTRODUCTION   See MEDICAL TESTS: 0217