Liquid nitrogen cylinder description
Nitrogen is colorless, odorless, tasteless, nontoxic, inert and represents 78.08% of the atmosphere. Nitrogen is nonflammable and does not support combustion.
It is slightly soluble in water and most other liquids. Nitrogen does not conduct heat and electricity well.
1)Carrier gas in gas chromatography.
2)Zero gas in analytical instruments.
3)Freezing and packaging of food.
4)As a reducing gas to provide and oxygen free atmosphere.
5)Liquid nitrogen can be used for freezing of liquids in pipelines for emergencies, low temperature stabilization, prevention of blood, sperm and other biological and refrigeration of food.
Physical and Chemical Properties
Appearance : Liquefied gas. Colorless.
Odor : No odor warning properties.
Odor threshold : No data available.
pH : Not applicable.
Melting point/range : -346 °F (-210 °C)
Boiling point/range : -321 °F (-196 °C)
Flash point : Not applicable.
Evaporation rate : Not applicable.
Upper/lower explosion/flammability limit : No data available.
Vapor pressure : Not applicable.
Water solubility : 0.02 g/l
Relative vapor density : 0.97 (air = 1)
Relative density : 0.8 (water = 1)
Partition coefficient (noctanol/water) : Not applicable.
Auto-ignition temperature : No data available.
Nitrogen Decomposition temperature : No data available.
Viscosity : Not applicable.
Molecular Weight : 28 g/mol
Hazards & Transportation
H281:Contains refrigerated gas; may cause cryogenic burns or injury. May displace oxygen and cause rapid suffocation.
Major Hazard: high temperature and suffocation
Fire Potential: nonflammable
DOTE Name: nitrogen
DOT Label: nonflammable gas
Identification No.: UN-1066(compressed gas)
Water capacity: 40/50 liters (standard)
Filling pressure at 21℃：150bar
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