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Krypton 

Kr

CAS#:7439-90-9



KRYPTON ICSC: 0604
CAS # 7439-90-9 Kr
RTECS # Atomic mass: 83.8
UN # 1970
EC #
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: all extinguishing agents allowed. 
EXPLOSION

In case of fire: keep cylinder cool by spraying with water. Combat fire from a sheltered position. 
EXPOSURE


Inhalation Suffocation (see Notes). 
Ventilation. 
Fresh air, rest. Artificial respiration if indicated. Refer for medical attention. 
Skin ON CONTACT WITH LIQUID: FROSTBITE. 
Cold-insulating gloves. 
ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer for medical attention. 
Eyes See Skin. 
Safety goggles, or face shield. 
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor. 
Ingestion


SPILLAGE DISPOSAL PACKAGING & LABELLING
Ventilation. NEVER direct water jet on liquid. (Extra personal protection: chemical protection suit including self-contained breathing apparatus). 
Special insulated cylinder.
EU Classification 
UN Classification 
UN Hazard Class: 2.2

EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-20G48 
Fireproof if in building. Cooled. 
IPCS 
International 
Programme on 
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities � IPCS, CEC 2001 

SEE IMPORTANT INFORMATION ON BACK



KRYPTON ICSC: 0604
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE: 
ODOURLESS, COLOURLESS, COMPRESSED LIQUEFIED GAS

PHYSICAL DANGERS: 
The gas is heavier than air and may accumulate in low ceiling spaces causing deficiency of oxygen.

OCCUPATIONAL EXPOSURE LIMITS: 
TLV not established. 
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.

EFFECTS OF SHORT-TERM EXPOSURE: 
The liquid may cause frostbite.

PHYSICAL PROPERTIES
Boiling point: -153℃
Melting point: -157℃
Solubility in water: none
Relative vapour density (air = 1): 2.9
Octanol/water partition coefficient as log Pow: 1.2 (est.)
ENVIRONMENTAL DATA

NOTES
High concentrations in the air cause a deficiency of oxygen with the risk of unconsciousness or death. Check oxygen content before entering area. 
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
� IPCS, CEC 2001
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