Carbamide
Carbonyldiamide
NH2CONH2 / CH4N2O
Molecular mass: 60.1
ICSC # 0595
CAS # 57-13-6
RTECS # YR6250000
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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: all extinguishing agents allowed.
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Explosion
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Exposure
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PREVENT DISPERSION OF DUST!
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•Inhalation
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Cough.
Shortness of breath.
Sore throat.
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Local exhaust.
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Fresh air, rest.
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•Skin
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Redness.
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Protective gloves.
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Rinse and then wash skin with water and soap.
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•Eyes
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Redness.
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Safety spectacles.
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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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Convulsions.
Headache.
Nausea.
Vomiting.
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Do not eat, drink, or smoke during work.
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Give plenty of water to drink.
Rest.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting.
Wash away remainder with plenty of water.
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Separated from
incompatible materials, (see chemical dangers).
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Important Data
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Physical State; Appearance:
WHITE CRYSTALS
, WITH CHARACTERISTIC ODOUR.
Physical Dangers:
Chemical Dangers:
The substance decomposes
on heating above melting point
producing toxic gases.
Reacts violently with strong oxidants, nitrites, inorganic chlorides, chlorites and perchlorates
causing fire and explosion hazard.
Occupational Exposure Limits:
TLV not established.
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its aerosol and
by ingestion.
Inhalation Risk:
Evaporation at 20°C is negligible; a nuisance-causing concentration of airborne particles can, however, be reached quickly if powdered.
Effects of Short-Term Exposure:
The substance
irritates
the eyes,
the skin and
the respiratory tract.
Effects of Long-Term or Repeated Exposure:
Repeated or prolonged contact with skin may cause dermatitis.
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Physical
Properties
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Melting point: 132.7-135°C
Density: 1.32
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Solubility in water: miscible
Octanol/water partition coefficient as log Pow: -3.00 to -1.54
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Environmental
Data
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N O T E S
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Temperature of decomposition unknown in literature.
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ADDITIONAL INFORMATION
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ICSC: 0595
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UREA
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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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