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Nitrogen trifluoride

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Synonyms & Trade Names
Nitrogen fluoride, Trifluoramine, Trifluorammonia
CAS No.
7783-54-2
RTECS No.
QX1925000
DOT ID & Guide
2451 122
Formula
NF₃
Conversion
1 ppm = 2.90 mg/m3
IDLH
1000 ppm
See: 7783542
Exposure Limits
NIOSH REL
TWA 10 ppm (29 mg/m3)
OSHA PEL
TWA 10 ppm (29 mg/m3)
Measurement Methods
None available
See: NMAM or OSHA Methods
Physical Description
Colorless gas with a moldy odor. [Note: Shipped as a nonliquefied compressed gas.]
Molecular Weight
71.0
Boiling Point
-200°F
Freezing Point
-340°F
Solubility
Slight
Vapor Pressure
>1 atm
Ionization Potential
12.97 eV
Flash Point
NA
Upper Explosive Limit
NA
Lower Explosive Limit
NA
Relative Gas Density
2.46
Nonflammable Gas
Incompatibilities & Reactivities
Water, oil, grease, oxidizable materials, ammonia, carbon monoxide, methane, hydrogen, hydrogen sulfide, activated charcoal, diborane
Exposure Routes
inhalation
Symptoms
In Animals: anoxia, cyanosis; methemoglobinemia; lassitude (weakness, exhaustion), dizziness, headache; liver, kidney injury
Target Organs
Blood, liver, kidneys
Personal Protection/Sanitation
(See protection codes)
Skin:No recommendation
Eyes:No recommendation
Wash skin:No recommendation
Remove:No recommendation
Change:No recommendation
First Aid
(See procedures)


Breathing:Respiratory support
Respirator Recommendations

NIOSH/OSHA

Up to 100 ppm:
(APF = 10) Any chemical cartridge respirator with cartridge(s) providing protection against the compound of concern
(APF = 10) Any supplied-air respirator

Up to 250 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode
(APF = 25) Any powered, air-purifying respirator with cartridge(s) providing protection against the compound of concern

Up to 500 ppm:
(APF = 50) Any chemical cartridge respirator with a full facepiece and cartridge(s) providing protection against the compound of concern
(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
(APF = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and cartridge(s) providing protection against the compound of concern*
(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 1000 ppm:
(APF = 2000) Any supplied-air respirator that has a full facepiece and is 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 canister providing protection against the compound of concern
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 1234   MEDICAL TESTS: 0165
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health