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N,N'-DIPHENYL-para-PHENYLENEDIAMINEICSC: 1181
October 1995
CAS #: 74-31-7N,N-Diphenyl-1,4-benzenediamine
1,4-bis(Phenylamino)benzene
1,4-Dianilinobenzene
EINECS #: 200-806-4

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible. Gives off irritating or toxic fumes (or gases) in a fire.    NO open flames.    Use water spray, powder, foam, carbon dioxide.   

 PREVENT DISPERSION OF DUST! STRICT HYGIENE!  
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation   Use local exhaust.  Fresh air, rest. 
Skin   Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse and then wash skin with water and soap. 
Eyes   Wear face shield.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion   Do not eat, drink, or smoke during work.  Rinse mouth. Give one or two glasses of water to drink. 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

 

Transportation
UN Classification
 

STORAGE
Separated from strong oxidants. Keep in a well-ventilated room. 
PACKAGING
 
N,N'-DIPHENYL-para-PHENYLENEDIAMINE ICSC: 1181
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS CRYSTALS OR GREY POWDER. 

Physical dangers
 

Chemical dangers
Decomposes on heating. This produces toxic fumes including nitrogen oxides. Reacts with oxidants. 

Formula: C6H5NHC6H4NHC6H5 / C18H16N2
Molecular mass: 260.3
Boiling point at 0.066kPa: 220-225°C
Melting point: 150-151°C
Relative density (water = 1): 1.2
Solubility in water: none
Relative vapour density (air = 1): 9.0  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation. 

Effects of short-term exposure
 

Inhalation risk
Evaporation at 20°C is negligible; a nuisance-causing concentration of airborne particles can, however, be reached quickly when dispersed. 

Effects of long-term or repeated exposure
Repeated or prolonged contact may cause skin sensitization. 


Occupational exposure limits
MAK sensitization of skin (SH) 

ENVIRONMENT
 

NOTES
Commercial grades of the compound are greenish-brown. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: Xi; R: 43-52/53; S: (2)-24-37-61 

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    See Also:
       Toxicological Abbreviations