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N,N-DIMETHYLANILINE
ICSC: 0877
Peer-Review Status: 23.03.1998 Validated
N,N-Dimethylphenylamine 
CAS #: 121-69-7 RTECS #: BX4725000
UN #: 2253
EC #: 612-016-00-0
EINECS #: 204-493-5
    Formula: C8H11N / C6H5N(CH3)2
Molecular mass: 121.2

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. NO contact with oxidizing agents.  Use water spray, powder, foam, carbon dioxide. 
EXPLOSION Above 62°C explosive vapour/air mixtures may be formed.  Above 62°C use a closed system and ventilation.  In case of fire: keep drums, etc., cool by spraying with water. Combat fire from a sheltered position. 
 
EXPOSURE      
Inhalation Abdominal pain. Blue lips, fingernails and skin. Confusion. Convulsions. Dizziness. Headache. Laboured breathing. Nausea. Unconciousness. Vomiting. Ringing in the ears. Visual disturbances.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin MAY BE ABSORBED! Redness.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse skin with plenty of water or shower. 
Eyes Redness. Pain.  Wear face shield 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 See Inhalation.  Do not eat, drink, or smoke during work.  Rinse mouth. Give a slurry of activated charcoal in water to drink. Rest. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Collect leaking and spilled liquid in sealable metal or glass containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. Do NOT let this chemical enter the environment. Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Personal protection: chemical protection suit.  Do not transport with food and feedstuffs. 
EC Classification
Symbol: T, N; R: 23/24/25-40-51/53; S: (1/2)-28-36/37-45-61 
UN Classification
UN Hazard Class: 6.1; UN Pack Group: II 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-846-2.
NFPA Code: H3; F2; R0. 
Separated from strong oxidants and food and feedstuffs. Ventilation along the floor. 

IMPORTANT DATA
Physical State; Appearance
YELLOW OILY LIQUID WITH CHARACTERISTIC ODOUR. TURNS BROWN ON EXPOSURE TO AIR. 

Physical dangers
 

Chemical dangers
Decomposes on heating. This produces highly toxic fumes of aniline and nitrogen oxides. Reacts with oxidants. 

Occupational exposure limits
TLV: 5 ppm as TWA; 10 ppm as STEL; (skin); A4 (not classifiable as a human carcinogen); BEI issued; (ACGIH 2008).
MAK: 5 ppm, 25 mg/m³; Carcinogen category: 3B; Peak limitation category: II(2); Pregnancy risk group: D; Skin absorption (H); (DFG 2008). 

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

Inhalation risk
A harmful contamination of the air will be reached rather slowly on evaporation of this substance at 20°C. 

Effects of short-term exposure
If this liquid is swallowed, aspiration into the lungs may result in chemical pneumonitis. The substance may cause effects on the blood. This may result in formation of methaemoglobin. Exposure far above the OEL could cause lowering of consciousness. The effects may be delayed. Medical observation is indicated. 

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


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 192-194°C
Melting point: 2.5°C
Relative density (water = 1): 0.96
Solubility in water: none
Vapour pressure, Pa at 20°C: 67
Relative vapour density (air = 1): 4.2
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.002
Flash point: 62°C
Auto-ignition temperature: 371°C
Explosive limits, vol% in air: 1-7
Octanol/water partition coefficient as log Pow: 2.3  
The substance is harmful to aquatic organisms. 

NOTES
Depending on the degree of exposure, periodic medical examination is indicated.
Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available.
Card has been partially updated in November 2008: see Occupational Exposure Limits. 

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