IPCS INCHEM Home
N,N'-DIPHENYL-para-PHENYLENEDIAMINE
ICSC: 1181
Peer-Review Status: 23.10.1995 Validated
N,N-Diphenyl-1,4-benzenediamine
1,4-bis(Phenylamino)benzene
1,4-Dianilinobenzene 
CAS #: 74-31-7 RTECS #: ST2275000
EC #: 612-132-00-1
EINECS #: 200-806-4
    Formula: C6H5NHC6H4NHC6H5 / C18H16N2
Molecular mass: 260.3

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire.  NO open flames.  Use water spray, powder, foam, carbon dioxide. 
EXPLOSION      
 
EXPOSURE   PREVENT DISPERSION OF DUST! STRICT HYGIENE!   
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
PACKAGING & 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.   
EC Classification
Symbol: Xi; R: 43-52/53; S: (2)-24-37-61 
UN Classification
 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
  Separated from strong oxidants. Keep in a well-ventilated room. 

IMPORTANT DATA
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. 

Occupational exposure limits
TLV (NOT-ESTABLISHED):. 

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. 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
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  
 

NOTES
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. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.


    See Also:
       Toxicological Abbreviations