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N,N'-DIPHENYL-para-PHENYLENEDIAMINEICSC: 1181
N,N-Diphenyl-1,4-benzenediamine
1,4-bis(Phenylamino)benzene
1,4-Dianilinobenzene
November 2019
CAS #: 74-31-7
EC Number: 200-806-4

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible. Gives off irritating or toxic fumes (or gases) in a fire.  Finely dispersed particles form explosive mixtures in air.  NO open flames.  Prevent deposition of dust.  Use water spray, powder, foam, carbon dioxide.   

 PREVENT DISPERSION OF DUST! STRICT HYGIENE!  
  SYMPTOMS PREVENTION FIRST AID
Inhalation   Use local exhaust.  Fresh air, rest. 
Skin   Protective gloves. Protective clothing.  Wear protective gloves when administering first aid. Remove contaminated clothes. Rinse and then wash skin with water and soap. 
Eyes   Wear face shield.  Rinse with plenty of water (remove contact lenses if easily possible). 
Ingestion   Do not eat, drink, or smoke during work.  Rinse mouth. 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. 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

excl mark;warn
WARNING
May cause an allergic skin reaction 

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
Dust explosion possible if in powder or granular form, mixed with air. 

Chemical dangers
Decomposes on heating. This produces toxic fumes including carbon monoxide and nitrogen oxides. Reacts with oxidants. This generates fire and explosion hazard. 

Formula: C6H5NHC6H4NHC6H5 / C18H16N2
Molecular mass: 260.3
Melting point: 150-151°C
Relative density (water = 1): 1.2
Solubility in water: none
Relative vapour density (air = 1): 9.0
Flash point: 232°C c.c. 


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
 

Inhalation risk
A nuisance-causing concentration of airborne particles can 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
Avoid release to the environment in circumstances different to normal use. Bioaccumulation of this chemical may occur along the food chain, for example in fish. Environmental effects from the substance have not been investigated adequately. 

NOTES
 

ADDITIONAL INFORMATION
  EC Classification
 

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