N,N-Diphenyl-1,4-benzenediamine
1,4-bis(Phenylamino)benzene
1,4-Dianilinobenzene
C6H5NHC6H4NHC6H5 / C18H16N2
Molecular mass: 260.3
ICSC # 1181
CAS # 74-31-7
RTECS # ST2275000
EC # 612-132-00-1
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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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Combustible.
Gives off irritating or toxic fumes (or gases) in a fire.
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NO open flames.
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Powder, water spray, foam, carbon dioxide.
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Explosion
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Exposure
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PREVENT DISPERSION OF DUST!
STRICT HYGIENE!
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•Inhalation
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Local exhaust.
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Fresh air, rest.
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•Skin
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Protective gloves.
Protective clothing.
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Remove contaminated clothes.
Rinse and then wash skin with water and soap.
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•Eyes
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Face shield.
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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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Do not eat, drink, or smoke during work.
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Rinse mouth.
Give plenty of water to drink.
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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.
Carefully collect remainder,
then remove to safe place.
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Separated from
strong oxidants.
Keep in a well-ventilated room.
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Xi symbol
R: 43-52/53
S: 2-24-37-61
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Important Data
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Physical State; Appearance:
COLOURLESS
CRYSTALS
OR GREY POWDER.
Physical Dangers:
Chemical Dangers:
The substance decomposes
on heating
producing
toxic fumes
including
nitrogen oxides
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Reacts
with
oxidants
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Occupational Exposure Limits:
TLV not established.
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation.
Inhalation Risk:
Evaporation at 20°C is negligible; a nuisance-causing concentration of airborne particles can, however, be reached quickly when dispersed.
Effects of Short-Term Exposure:
Effects of Long-Term or Repeated Exposure:
Repeated or prolonged contact may cause skin sensitization.
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Physical
Properties
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Boiling point at 0.066 kPa: 220-225°C
Melting point: 150-151°C
Relative density (water = 1): 1.2
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Solubility in water: none
Relative vapour density (air = 1): 9.0
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Environmental
Data
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N O T E S
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Commercial grades of the compound are greenish-brown.
Agerite, Altofane-Dif, Diafen FF, Flexamine G and Permanax 18 are trade names.
Card has been partly updated in April 2005. See section EU classification.
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ADDITIONAL INFORMATION
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ICSC: 1181
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N,N'-DIPHENYL-para-PHENYLENEDIAMINE
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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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