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Chemical Datasheet
NITROGEN TRIFLUORIDE |
|
Chemical Identifiers
CAS Number |
UN/NA Number |
DOT Hazard Label |
USCG CHRIS Code |
- 7783-54-2
|
|
- Non-Flammable Gas
- Oxidizer
|
none
|
NIOSH Pocket Guide |
International Chem Safety Card |
Nitrogen trifluoride
|
|
NFPA 704
data unavailable
General Description
A colorless gas with a moldy odor. Very toxic by inhalation. Slightly soluble in water. Corrosive to tissue. Under prolonged exposure to fire or heat the containers may rupture violently and rocket. Used to make other chemicals and as a component of rocket fuels.
Hazards
Reactivity Alerts
- Explosive
- Strong Oxidizing Agent
Air & Water Reactions
Slightly soluble in water.
Fire Hazard
Excerpt from ERG Guide 122 [Gases - Oxidizing (Including Refrigerated Liquids)]:
Substance does not burn but will support combustion. Some may react explosively with fuels. May ignite combustibles (wood, paper, oil, clothing, etc.). Vapors from liquefied gas are initially heavier than air and spread along ground. Runoff may create fire or explosion hazard. Containers may explode when heated. Ruptured cylinders may rocket. (ERG, 2024)
Health Hazard
Excerpt from ERG Guide 122 [Gases - Oxidizing (Including Refrigerated Liquids)]:
Vapors may cause dizziness or asphyxiation without warning, especially when in closed or confined areas. Contact with gas, liquefied gas or cryogenic liquids may cause burns, severe injury and/or frostbite. Fire may produce irritating and/or toxic gases. (ERG, 2024)
Reactivity Profile
NITROGEN TRIFLUORIDE is a very powerful oxidizing agent. Presents dangerous fire hazard in the presence of reducing agents. Etches glass in the presence of moisture. Emits toxic and corrosive fumes of fluoride when heated to decomposition [Lewis, 3rd ed., 1993, p. 937]. Can react violently with hydrogen, ammonia, carbon monoxide, diborane, hydrogen sulfide, methane, tetrafluorohydrazine, charcoal. Explosive reaction with chlorine dioxide. A severe explosion may occur when exposed to reducing agents under pressure [Bretherick, 5th ed., 1995, p. 1427].
Belongs to the Following Reactive Group(s)
- Oxidizing Agents, Strong
- Halogenating Agents
Potentially Incompatible Absorbents
Use caution: Liquids with this reactive group classification have been
known to react with the
absorbents
listed below.
- Cellulose-Based Absorbents
- Mineral-Based & Clay-Based Absorbents
- Expanded Polymeric Absorbents
- Dirt/Earth
Response Recommendations
Isolation and Evacuation
Excerpt from ERG Guide 122 [Gases - Oxidizing (Including Refrigerated Liquids)]:
IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area for at least 100 meters (330 feet) in all directions.
LARGE SPILL: Consider initial downwind evacuation for at least 500 meters (1/3 mile).
FIRE: If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2024)
Firefighting
Excerpt from ERG Guide 122 [Gases - Oxidizing (Including Refrigerated Liquids)]:
Use extinguishing agent suitable for type of surrounding fire.
SMALL FIRE: Dry chemical or CO2.
LARGE FIRE: Water spray, fog or regular foam. If it can be done safely, move undamaged containers away from the area around the fire. Damaged cylinders should be handled only by specialists.
FIRE INVOLVING TANKS: Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. Do not direct water at source of leak or safety devices; icing may occur. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks in direct contact with flames. For massive fire, use unmanned master stream devices or monitor nozzles; if this is impossible, withdraw from area and let fire burn. (ERG, 2024)
Non-Fire Response
Excerpt from ERG Guide 122 [Gases - Oxidizing (Including Refrigerated Liquids)]:
Keep combustibles (wood, paper, oil, etc.) away from spilled material. Do not touch or walk through spilled material. Stop leak if you can do it without risk. If possible, turn leaking containers so that gas escapes rather than liquid. Do not direct water at spill or source of leak. Use water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled material. Prevent entry into waterways, sewers, basements or confined areas. Allow substance to evaporate. Isolate area until gas has dispersed. CAUTION: When in contact with refrigerated/cryogenic liquids, many materials become brittle and are likely to break without warning. (ERG, 2024)
Protective Clothing
Excerpt from NIOSH Pocket Guide for Nitrogen trifluoride:
Skin: No recommendation is made specifying the need for personal protective equipment for the body.
Eyes: No recommendation is made specifying the need for eye protection.
Wash skin: No recommendation is made specifying the need for washing the substance from the skin (either immediately or at the end of the work shift).
Remove: No recommendation is made specifying the need for removing clothing that becomes wet or contaminated.
Change: No recommendation is made specifying the need for the worker to change clothing after the workshift. (NIOSH, 2024)
DuPont Tychem® Suit Fabrics
Normalized Breakthrough Times (in Minutes)
Chemical |
CAS Number |
State |
QS |
QC |
SL |
C3 |
TF |
TP |
RC |
TK |
RF |
Nitrogen trifluoride |
7783-54-2 |
Vapor |
|
|
|
|
|
|
>480 |
>480 |
>480 |
Special Warning from DuPont: Tychem® and Tyvek® fabrics should not be
used around heat, flames, sparks or in potentially flammable or
explosive environments. Only...
(DuPont, 2024)
First Aid
Excerpt from NIOSH Pocket Guide for Nitrogen trifluoride:
Breathing: RESPIRATORY SUPPORT - If a person breathes large amounts of this chemical, move the exposed person to fresh air at once. If breathing has stopped, perform artificial respiration. Keep the affected person warm and at rest. Get medical attention as soon as possible. (NIOSH, 2024)
Physical Properties
Flash Point: data unavailable
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: data unavailable
Melting Point:
-340°F
(NIOSH, 2024)
Vapor Pressure:
greater than 1 atm
(NIOSH, 2024)
Vapor Density (Relative to Air):
2.46
(NIOSH, 2024)
- Heavier than air; will sink
Specific Gravity: data unavailable
Boiling Point:
-200°F
at 760 mmHg
(NIOSH, 2024)
Molecular Weight:
71
(NIOSH, 2024)
Water Solubility:
Slight
(NIOSH, 2024)
Ionization Energy/Potential:
12.97 eV
(NIOSH, 2024)
IDLH:
1000 ppm
(NIOSH, 2024)
AEGLs (Acute Exposure Guideline Levels)
Interim AEGLs for Nitrogen trifluoride (7783-54-2)
Exposure Period |
AEGL-1 |
AEGL-2 |
AEGL-3 |
10 minutes |
1200 ppm |
3100 ppm |
5000 ppm |
30 minutes |
400 ppm |
1100 ppm |
1700 ppm |
60 minutes |
200 ppm |
530 ppm |
860 ppm |
4 hours |
50 ppm |
140 ppm |
220 ppm |
8 hours |
25 ppm |
68 ppm |
110 ppm |
(NAC/NRC, 2024)
ERPGs (Emergency Response Planning Guidelines)
Chemical |
ERPG-1 |
ERPG-2 |
ERPG-3 |
Nitrogen Trifluoride (7783-54-2)
|
200 ppm |
400 ppm |
800 ppm |
(AIHA, 2022)
PACs (Protective Action Criteria)
Chemical |
PAC-1 |
PAC-2 |
PAC-3 |
Nitrogen trifluoride (7783-54-2)
|
200 ppm |
530 ppm |
860 ppm |
(DOE, 2024)
Regulatory Information
EPA Consolidated List of Lists
No regulatory information available.
CISA Chemical Facility Anti-Terrorism Standards (CFATS)
No regulatory information available.
OSHA Process Safety Management (PSM) Standard List
Chemical Name |
CAS Number |
Threshold Quantity (TQ) |
Nitrogen Trifluoride |
7783-54-2 |
5000 pounds |
(OSHA, 2019)
Alternate Chemical Names
- NITROGEN FLUORIDE
- NITROGEN TRIFLUORIDE
- NITROGEN TRIFLUORIDE, COMPRESSED
- PERFLUOROAMMONIA
- TRIFLUORAMINE
- TRIFLUORAMMONIA
- TRIFLUOROAMINE
- TRIFLUOROAMMONIA