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1,2-DIPHENYLHYDRAZINE
ICSC: 0263
Peer-Review Status: 21.04.2005 Validated
Hydrazobenzene
Diphenylhydrazine
N,N'-Bianiline 
CAS #: 122-66-7 RTECS #: MW2625000
EC #: 007-021-00-4
EINECS #: 204-563-5
    Formula: C12H12N2 / C6H5NHNHC6H5
Molecular mass: 184.3

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 See EFFECTS OF LONG-TERM OR REPEATED EXPOSURE.  AVOID ALL CONTACT!   
Inhalation Cough.  Use local exhaust or breathing protection.  Fresh air, rest. 
Skin   Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse and then wash skin with water and soap. 
Eyes Redness.  Wear safety spectacles or eye protection in combination with breathing protection.  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. Wash hands before eating.  Rinse mouth. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered sealable containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations.  Do not transport with food and feedstuffs. 
EC Classification
Symbol: T, N; R: 45-22-50/53; S: 53-45-60-61; Note: E 
UN Classification
 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
  Separated from food and feedstuffs. Store in an area without drain or sewer access. 

IMPORTANT DATA
Physical State; Appearance
WHITE-TO-YELLOW CRYSTALS. 

Physical dangers
 

Chemical dangers
Decomposes on burning. This produces toxic fumes including nitrogen oxides. Reacts with mineral acids. This produces benzidine (see ICSC 0224). 

Occupational exposure limits
TLV (NOT-ESTABLISHED):.
MAK: Carcinogen category: 2; (DFG 2004). 

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

Inhalation risk
A harmful concentration of airborne particles can be reached quickly when dispersed. 

Effects of short-term exposure
May cause mechanical irritation. 

Effects of long-term or repeated exposure
This substance is probably carcinogenic to humans. 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Decomposes at 125-131°C
Density: 1.16 g/cm³
Solubility in water, g/100ml at 20°C: <0.1 (poor)
Octanol/water partition coefficient as log Pow: 2.94  
The substance is very toxic to aquatic organisms. Bioaccumulation of this chemical may occur in fish. 

NOTES
Do NOT take working clothes home.
Depending on the degree of exposure, periodic medical examination is suggested. 

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