Appendix E: Safety Data Sheet for Liquid Nitrogen
82
D52IB001EN-G
LIQUID NITROGEN - N
2
MSDS
EFFECTIVE DATE: JUNE 9, 2010
PAGE 5 OF 7
8. EXPOSURE CONTROLS - PERSONAL PROTECTION (Continued)
BODY PROTECTION:
Use body protection appropriate for task. Safety shoes are recommended when handling
containers, as well as long sleeve shirts and trousers. Safety shoes are recommended when handling cylinders. If a
hazard of injury to the feet exists due to falling objects, rolling objects, where objects may pierce the soles of the feet
or where employee’s feet may be exposed to electrical hazards, use foot protection, as described in U.S. OSHA 29
CFR 1910.136.
9. PHYSICAL and CHEMICAL PROPERTIES
GAS DENSITY @ 0°C (32°F) and 1 atm:
.072 lbs/cu ft (1.153 kg/m
3
)
BOILING POINT
: -195.8°C (-320.4°F)
FREEZING/MELTING POINT @ 10 psig:
-210°C (-345.8°F)
SPECIFIC GRAVITY (air = 1) @ 21.1°C (70°F):
0.906
pH
: Not applicable.
SOLUBILITY IN WATER vol/vol @ 0°C (32°F) and 1 atm:
0.023
MOLECULAR WEIGHT:
28.01
EVAPORATION RATE (nBuAc = 1):
Not applicable.
EXPANSION RATIO
: Not applicable.
ODOR THRESHOLD
: Not applicable. Odorless
.
SPECIFIC VOLUME (ft
3
/lb)
: 13.8
VAPOR PRESSURE @ (21.1°C) 70°F psig
: Not applicable.
COEFFICIENT WATER/OIL DISTRIBUTION
: Not applicable.
APPEARANCE, ODOR AND COLOR
: Liquid Nitrogen is a colorless, odorless cryogenic liquid.
HOW TO DETECT THIS SUBSTANCE (warning properties):
There are no unusual warning properties associated
with a release of Liquid Nitrogen, except the extreme cold, which may form a vapor cloud.
10. STABILITY and REACTIVITY
STABILITY
: Normally stable in gaseous state. With cryogenic liquid, when exposed to air, oxygen in the air may
condense into the Liquid Nitrogen. Liquid Nitrogen contaminated with oxygen may present the same hazards as
Liquid Oxygen and could react violently with organic materials, such as oil and grease
.
DECOMPOSITION PRODUCTS
: None.
MATERIALS WITH WHICH SUBSTANCE IS INCOMPATIBLE
: Titanium is the only element that will burn in
Nitrogen. Lithium reacts slowly with Nitrogen at ambient temperatures. Also, use of Liquid Nitrogen in cryogenic
grinding of fatty materials can lead to an explosion. A mixture of magnesium powder and Liquid Nitrogen reacts very
violently when lit with a fuse, forming magnesium nitride. Liquid Nitrogen is not corrosive to metals, but the extreme
cold can make some metals brittle
.
HAZARDOUS POLYMERIZATION
: Will not occur.
CONDITIONS TO AVOID
: Contact with incompatible materials. Cryogenic containers exposed to high
temperatures or direct flame can rupture or burst
.
11. TOXICOLOGICAL INFORMATION
TOXICITY DATA
: The following toxicology data for pure Nitrogen are listed below
.
Eye Irritation (rabbit): Liquid Nitrogen poured into the eye for one or two seconds with the lids held apart, produced no discernible injury.
When the exposure was extended to five seconds, slight lesions of the cornea were observed. By the next day, all eyes were
entirely normal.
SUSPECTED CANCER AGENT:
Nitrogen is not found on the following lists: FEDERAL OSHA Z LIST, NTP,
CAL/OSHA, IARC; therefore it is not considered to be, nor suspected to be a cancer-causing agent by these
agencies
.
IRRITANCY OF PRODUCT:
Contact with the cryogenic liquid or rapidly expanding gases can cause frostbite and
damage to exposed skin and eyes
.
SENSITIZATION OF PRODUCT:
Nitrogen is not a sensitizer.
Listed below is information concerning the effects of Liquid Nitrogen on the human reproductive system.
Mutagenicity: Nitrogen is not reported to cause mutagenic effects in humans.
Embryotoxicity: Nitrogen is not reported to cause embryotoxic effects in humans.
Teratogenicity: Nitrogen is not reported to cause teratogenic effects in humans.
Reproductive Toxicity: Nitrogen is not reported to cause adverse reproductive effects in humans.
A mutagen is a chemical which causes permanent changes to genetic material (DNA) such that the changes will propagate
through generation lines. An embryotoxin is a chemical which causes damage to a developing embryo (i.e. within the first
eight weeks of pregnancy in humans), but the damage does not propagate across generational lines. A teratogen is a
chemical which causes damage to a developing fetus, but the damage does not propagate across generational lines. A
reproductive toxin is any substance which interferes in any way with the reproductive process.
BIOLOGICAL EXPOSURE INDICES (BEIs):
Currently, Biological Exposure Indices (BEIs) have not been
determined for Nitrogen.
Summary of Contents for TTK 600
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Page 74: ...Appendix B Sample Chamber Dimensions 74 D52IB001EN G Appendix B Sample Chamber Dimensions ...
Page 75: ...Appendix C Declaration of Conformity D52IB001EN G 75 Appendix C Declaration of Conformity ...
Page 77: ...Appendix D Spare Parts and Accessories D52IB001EN G 77 176383 COOLING MODE SWITCHING VALVE ...
