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NIOSH

NITROGEN (COMPRESSED GAS)

ICSC: 1198

N2
Molecular mass: 28.01
ICSC # 1198 		CAS # 7727-37-9
RTECS # QW9700000
UN # 1066
March 22, 1999 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Not combustible. Heating will cause rise in pressure with risk of bursting.

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 Unconsciousness. Weakness. Suffocation. See Notes.
Ventilation.
Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
•SKIN


•EYES


•INGESTION


SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Ventilation. Personal protection: self-contained breathing apparatus.
Fireproof if in building. Cool. Keep in a well-ventilated room.

UN Hazard Class: 2.2
ICSC: 1198 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 (COMPRESSED GAS)

ICSC: 1198

I

M

P

O

R

T

A

N

T


D

A

T

A

PHYSICAL STATE; APPEARANCE:
ODOURLESS, COLOURLESS COMPRESSED GAS

PHYSICAL DANGERS:
Gas mixes readily with air.

CHEMICAL DANGERS:


OCCUPATIONAL EXPOSURE LIMITS:
TLV: Simple asphyxiant; (ACGIH 2004).


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

INHALATION RISK:
On loss of containment this gas can cause suffocation by lowering the oxygen content of the air in confined areas. See Notes.

EFFECTS OF SHORT-TERM EXPOSURE:


EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:

PHYSICAL
PROPERTIES

Boiling point: -196°C
Melting point: -210°C
Solubility in water: poor
Relative vapour density (air = 1): 0.97

ENVIRONMENTAL
DATA


N O T E S

High concentrations in the air cause a deficiency of oxygen with the risk of unconsciousness or death. Check oxygen content before entering area. Card has been partly updated in April 2005. See sections Emergency Response, Occupational Exposure Limits.
Transport Emergency Card: TEC (R)-20G1A

ADDITIONAL INFORMATION



ICSC: 1198 NITROGEN (COMPRESSED GAS)
(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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