Download Nitrogen, Refrigerated Liquid

Information Sheet
UN No. 1977
24
Hazard No. 2T
Nitrogen, Refrigerated Liquid
Physical Data
Chemical Symbol
N2
Boiling Point
-195.8oC
Relative Density (Air=1)
0.967
Molecular Weight
28.013
Critical Temperature
-147.1oC
Flashpoint
Non flammable
Density of Gas @
101.3 kPa & 15oC
1.170 kg/m3
Density of Liquid (B.Pt.)
809 kg/m3
Specific Volume
@ 101.3 kPa & 15oC
0.855 m3/kg
Typical Analysis
Product Name
N2 Ref Liq
N2
>99.999%
O2
<5 ppm
Moisture
<10 ppm
Storage Tanks
Tank Size Range
>1,000 - < 60,000 lt
Description
Nitrogen is an almost totally inert
gas which is both colourless and
odourless. Liquid Nitrogen is non
flammable and does not support
combustion.
Typical uses
• Purging
• Tyre inflation
• Inert atmospheres
• Food packaging
• Gauge calibration
• Metal degassing
• Aerosol propellant
• Hydraulic systems
• Photo processing
• Mixed with H2 or He for leak
detection
• Food freezing
• Plastic forming
• Pipeline testing
• Air tools
• Wine sparging/inerting
• Fire fighting
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Nitrogen, Refrigerated Liquid continued
• Freezing
• Low temperature packaging and
storage
Main hazards
• Is an extremely low temperature at
-196°C.
• May replace oxygen in the inhaled
air and cause asphyxiation if
the amount of oxygen inhaled is
reduced to below 18%, it becomes
dangerous.
Precautions in Use
• Only use Nitrogen in well ventilated
area thus attempting to prevent the
accumulation of nitrogen in high
concentrations (oxygen content
for air should be maintained above
18%).
• Do not apply direct heat or give
alcohol or cigarettes.
• Protect frozen parts from infection.
N.B. If further information is required
on the safe handling of Liquid
Nitrogen please contact your local
Supagas Store.
SDS
Safety Data Sheets (SDS) are
available for gases supplied by
Supagas, please check our website
www.supagas.com.au or contact
your local Supagas outlet.
Issued Date
29/05/2015
• When handling liquid nitrogen
supply systems wear full overalls,
full face mask, and fitted leather
gloves.
First Aid
If victim is conscious:
• Move victim to uncontaminated
area to breathe fresh air.
• Keep victim warm and quiet.
• Call doctor and report the patients
condition.
If victim is unconscious:
• Move victim to uncontaminated
area and give assisted respiration.
When breathing is restored:
• Keep victim warm and quiet.
• Call doctor and report the patients
condition.
Cold burns/Frostbite:
• Flush with luke warm water for
minimum of 10 minutes then treat
as thermal burns.
• Seek hospital attention for all but
the most superficial cases.
13 77 72 www.supagas.com.au