Routes of Entry: Inhalation:YES Skin:YES Ingestion:NO
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:NITROGEN IS NONTOXIC, BUT MAY PRODUCE
SUFFOCATION BY DILUTING CONCENTRATION OF OXYGEN. DEATH MAY RESULT
FROM ERRORS IN JUDGEMENT/CONFUSION/UNCONSCIOUSNESS WHICH PREVENTS
SELF-RESCUE. (MAY OCCUR IN SEC ONDS W/OUT WARNING). EXTENSIVE
TISSUE DAMAGE/BURNS CAN RESULT. ASPHYXIANT. NITROGEN UNDER HIGH
PRESSURE-NARCOSIS.
Explanation of Carcinogenicity:NONE
Effects of Overexposure:EXPOSURE TO OXYGEN-DEFICIENT ATMOSPHERES MAY
PRODUCE DIZZINESS, NAUSEA, VOMITING, LOSS OF UNCONSCIOUSNESS.
======================= First Aid Measures =======================
First Aid:INHALATION: REMOVE TO FRESH AIR. GIVE ASSISTED RESPIRATION &
SUPPLEMENTAL OXYGEN. SKIN/EYES: FROZEN TISSUES SHOULD BE FLOODED OR
SOAKED W/TEPID WATER (105-115F). DON'T USE HOT WATER. CRYOGENIC
BURNS W HICH RESULT IN BLISTERING OR DEEPER TISSUE FREEZING SHOULD
BE SEEN PROMPTLY BY A PHYSICIAN. OBTAIN MEDICAL ATTENTION IN ALL
CASES.
===================== Fire Fighting Measures =====================
Flash Point:NON-FLAMMABLE
Fire Fighting Procedures:WEAR SCBA OR AIRLINE RESPIRATOR WHEN ENTERING
AREAS WHERE THE OXYGEN CONCENTRATION IS <19.5%
Unusual Fire/Explosion Hazard:CYLINDERS EXPOSED TO HIGH HEAT OR FLAME
MAY VENT RAPIDLY.
Spill Release Procedures:AVOID CONTACT OF SKIN W/LIQUID NITROGEN/COLD
BOIL-OFF GAS. FLUSH LIQUID NITROGEN SPILL W/WATER TO DISPERSE.
VENTILATE ENCLOSED AREAS TO PREVENT FORMATION OF OXYGEN-DEFICIENT
ATMOSPHERES CAUSED BY LIQU ID NITROGEN EVAPORATION/GASEOUS NITROGEN
RELEASE.
====================== Handling and Storage ======================
Handling and Storage Precautions:AVOID SKIN CONTACT. PREVENT LIQUID
ENTRAPMENT IN CLOSED SYSTEM. USE PRESSURE-REDUCING
REGULATOR/PRESSURE RELIEF DEVICE WHEN CONNECTING TO PIPE SYSTEM.
Other Precautions:SECURE CYLINDERS WHEN IN USE. USE CHECK VALVE TO
PREVENT BACK FLOW INTO STORAGE CONTAINER. AVOID
DRAGGING/ROLLING/SLIDING CYLINDERS. USE SUITABLE HAND TRUCK. STORE
LIQUID CYLINDERS OUTSIDE/GAS/LIQUID PIPED TO USE POINT. (SEE
SUPP).
Respiratory Protection:USE SCBA IN OXYGEN-DEFICIENT ATMOSPHERES.
CAUTION RESPIRATORS WILL NOT FUNCTION. USE MAY RESULT IN
ASPHYXIATION. IF OXYGEN-DEFICIENT ATMOSPHERES, USE OXYGEN
MONITORING EQUIPMENT TO TEST FOR OXYGEN DE FICIENT ATMOSPHERES.
Ventilation:NATURAL/MECHANICAL: WHERE GAS IS PRESENT. LOCAL
EXHAUST/MECHNICAL (GENERAL): AS REQUIRED. FORCED: AS REQUIRED.
Protective Gloves:LOOSE-FITTING IMPERMEABLE
Eye Protection:CHEMICAL GOGGLES OR SAFETY GLASSES
Other Protective Equipment:LEATHER GLOVES
Supplemental Safety and Health
PRECAUTIONS: STORAGE SHOULDN'T BE IN HEAVY TRAFFIC AREAS TO PREVENT
ACCIDENTAL KNOCKING OVER/DAMAGE FROM PASSING/FALLING OBJECTS. VALVE
CAPS SHOULD REMAIN ON CYLINDERS NOT CONNECTED FOR USE. SEGREGATE
FULL/EMPTY CYLINDERS. REPLACE CYLINDERCAP. AVOID CARBON STEEL USE.
DON'T REFILL. LIQUID NITROGEN IS CRYOGENIC.
Waste Disposal Methods:ALLOW LIQUID NITROGEN TO EVAPORATE IN WELL
VENTILATED AREA. VENT NITROGEN GAS SLOWLY TO VENTILATED AREA. DON'T
ATTEMPT TO DISPOSE OF RESIDUAL NITROGEN IN COMPRESSED GAS
CYLINDERS. RETURN CYLINDERS W/V ALVE TIGHTLY CLOSED & IN PLACE. UN
1066/1977.
Disclaimer (provided with this information by the compiling agencies):
This information is formulated for use by elements of the Department
of Defense. The United States of America in no manner whatsoever,
expressly or implied, warrants this information to be accurate and
disclaims all liability for its use. Any person utilizing this
document should seek competent professional advice to verify and
assume responsibility for the suitability of this information to their
particular situation.