Uranium fluoride
UF6
Molecular mass: 352.0
ICSC # 1250
CAS # 7783-81-5
RTECS # YR4720000
UN # 2978
EC # 092-002-00-3
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Not combustible.
Gives off irritating or toxic fumes (or gases) in a fire.
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In case of fire in the surroundings:
powder, carbon dioxide
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NO water
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Explosion
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Exposure
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AVOID ALL CONTACT!
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IN ALL CASES CONSULT A DOCTOR!
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•Inhalation
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Corrosive.
Burning sensation.
Cough.
Shortness of breath.
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Avoid inhalation of fine dust and mist.
Closed system and ventilation.
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Fresh air, rest.
Artificial respiration may be needed.
Refer for medical attention.
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•Skin
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Corrosive.
Skin burns.
Pain.
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Protective gloves.
Protective clothing.
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First rinse with plenty of water, then remove contaminated clothes and rinse again.
Refer for medical attention.
Wear protective gloves when administering first aid.
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•Eyes
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Corrosive.
Pain.
Severe deep burns.
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Face shield
or
eye protection in combination with breathing protection if powder.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Corrosive.
Abdominal cramps.
Burning sensation.
Shock or collapse.
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Do not eat, drink, or smoke during work.
Wash hands before eating.
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Rinse mouth.
Do NOT induce vomiting.
Give plenty of water to drink.
Refer for medical attention.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Evacuate danger area!
Consult an expert!
Sweep spilled substance into sealable containers,
then remove to safe place.
Personal protection: complete protective clothing including self-contained breathing apparatus.
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Separated from
aromatic compounds, ethanol,
food and feedstuffs
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Dry.
Well closed.
Keep in a well-ventilated room.
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Unbreakable packaging; put breakable packaging into closed unbreakable container.
Do not transport with food and feedstuffs.
Note: A
T+ symbol
N symbol
R: 26/28-33-51/53
S: 1/2-20/21-45-61
UN Hazard Class: 7
UN Subsidiary Risks: 8
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Important Data
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Physical State; Appearance:
COLOURLESS
TO WHITE
DELIQUESCENT CRYSTALS.
Physical Dangers:
Chemical Dangers:
The substance decomposes
on heating
producing toxic fumes of hydrogen fluoride (see ICSC 0283).
Reacts with aromatic compounds, such as benzene, toluene and xylene.
Reacts violently with water and ethanol.
Attacks many metals forming flammable/explosive gas (hydrogen - see ICSC 0001).
Attacks plastic, rubber and coatings.
Occupational Exposure Limits:
TLV: (as U) 0.2 mg/m3 as TWA; 0.6 mg/m3 as STEL; A1 (confirmed human carcinogen); (ACGIH 2004).
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation
and
by ingestion.
Inhalation Risk:
A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20°C.
Effects of Short-Term Exposure:
Corrosive.
The substance
is corrosive to
the eyes,
the skin
and
the respiratory tract.
The substance may cause effects on the
kidneys
, resulting in kidney impairment and tissue lesions.
Exposure at low level may result in death.
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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Boiling point: 56°C
Relative density (water = 1): 5.09
Solubility in water, g/100 ml at 20°C:
reaction
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Vapour pressure, kPa at 20°C: 14.2
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Environmental
Data
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N O T E S
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Do NOT take working clothes home.
Shipping name: UN 2978: Uranium hexafluoride (low specific activity); UN 2977: Uranium hexafluoride, fissile (containing more than 1% (235) uranium).
Card has been partly updated in April 2005. See sections Occupational Exposure Limits, Emergency Response.
Transport Emergency Card: TEC (R)-70Gd
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ADDITIONAL INFORMATION
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ICSC: 1250
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URANIUM HEXAFLUORIDE
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(C) IPCS, CEC, 1994
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IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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