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NIOSH

NITROGEN TRIFLUORIDE

ICSC: 1234

Nitrogen fluoride
Trifluoroamine
Trifluoroammonia
Perfluoroammonia
NF3
Molecular mass: 71.0
(cylinder)
ICSC # 1234 		CAS # 7783-54-2
RTECS # QX1925000
UN # 2451
October 27, 2004 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Not combustible but enhances combustion of other substances. Gives off irritating or toxic fumes (or gases) in a fire. Heating will cause rise in pressure with risk of bursting.
NO contact with flammable substances. NO contact with reducing agents.
In case of fire in the surroundings: use appropriate extinguishing media.
EXPLOSION

In case of fire: keep cylinder cool by spraying with water.
EXPOSURE


•INHALATION
Ventilation, local exhaust, or breathing protection.
Fresh air, rest.
•SKIN

Remove contaminated clothes.
•EYES
Safety goggles.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
•INGESTION


SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Ventilation. NEVER direct water jet on liquid. Personal protection: self-contained breathing apparatus.
Fireproof if in building. Separated from combustible and reducing substances. Cool.

UN Hazard Class: 2.2
UN Subsidiary Risks: 5.1
ICSC: 1234 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

NITROGEN TRIFLUORIDE

ICSC: 1234

I

M

P

O

R

T

A

N

T


D

A

T

A

PHYSICAL STATE; APPEARANCE:
COLOURLESS GAS , WITH CHARACTERISTIC ODOUR.

PHYSICAL DANGERS:
The gas is heavier than air and may accumulate in lowered spaces causing a deficiency of oxygen.

CHEMICAL DANGERS:
The substance decomposes on heating producing toxic fumes including fluoride. The substance is a strong oxidant and reacts with combustible and reducing materials. Reacts violently with ammonia, carbon monoxide, diborane, hydrogen, hydrogen sulfide, methane or tetrafluorohydrazine causing explosion hazard. Attacks metal. The substance is decomposed by electric sparks.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 10 ppm as TWA; BEI issued; (ACGIH 2004).
MAK not established.
OSHA PEL: TWA 10 ppm (29 mg/m3)
NIOSH REL: TWA 10 ppm (29 mg/m3)
NIOSH IDLH: 1000 ppm See: 7783542


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation.

INHALATION RISK:
On loss of containment, a harmful concentration of this gas in the air will be reached very quickly.

EFFECTS OF SHORT-TERM EXPOSURE:


EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
The substance may have effects on the liver and kidneys. Repeated or prolonged inhalation exposure may cause fluorosis.

PHYSICAL
PROPERTIES

Boiling point: -129°C
Melting point: -208.5°C
Relative density (water = 1): see Notes
Solubility in water:
none
Relative density of the vapour/air-mixture at 20°C (air = 1): 2.45

ENVIRONMENTAL
DATA


N O T E S

Density of the liquid at boiling point: 1.885 kg/l. The odour warning when the exposure limit value is exceeded is insufficient. Methemoglobinemia has been observed in animals, but relevance to humans is unclear. Turn leaking cylinder with the leak up to prevent escape of gas in liquid state. Wear protective equipment during this operation. Check oxygen content before entering area. High concentrations in the air cause a deficiency of oxygen with the risk of unconsciousness or death.
Transport Emergency Card: TEC (R)-20G1O

ADDITIONAL INFORMATION



ICSC: 1234 NITROGEN TRIFLUORIDE
(C) IPCS, CEC, 1994
IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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