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1-CHLORO-2,4-DINITROBENZENE
ICSC: 0416
Peer-Review Status: 19.10.1999 Validated
1,3-Dinitro-4-chlorobenzene
2,4-Dinitrophenyl chloride
DNCB 
CAS #: 97-00-7 RTECS #: CZ0525000
UN #: 1577
EC #: 610-003-00-4
EINECS #: 202-551-4
    Formula: C6H3ClN2O4 / C6H3Cl(NO2)2
Molecular mass: 202.6

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, foam, powder, carbon dioxide. 
EXPLOSION Finely dispersed particles form explosive mixtures in air.  Do NOT expose to friction or shock.  In case of fire: keep drums, etc., cool by spraying with water. Combat fire from a sheltered position. 
 
EXPOSURE   PREVENT DISPERSION OF DUST! STRICT HYGIENE!   
Inhalation Blue lips, fingernails and skin. Dizziness. Headache. Laboured breathing. Nausea. Vomiting. Blurred vision.  Use local exhaust or breathing protection.  Fresh air, rest. Artificial respiration may be needed. Refer for medical attention. 
Skin MAY BE ABSORBED! Redness. Pain. Further see Inhalation.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention . 
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 Abdominal pain. Blue lips, fingernails and skin. Dizziness. Headache. Laboured breathing. Nausea. Vomiting.  Do not eat, drink, or smoke during work.  Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Wear protective gloves when inducing vomiting. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Personal protection: chemical protection suit including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Vacuum spilled material with specialist equipment. Then store and dispose of according to local regulations.  Do not transport with food and feedstuffs.
Marine pollutant. 
EC Classification
Symbol: T, N; R: 23/24/25-33-50/53; S: (1/2)-28-36/37-45-60-61; Note: C 
UN Classification
UN Hazard Class: 6.1; UN Pack Group: II 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-61S1577-S or 61GT2-II.
NFPA Code: H3; F1; R4. 
Fireproof. Separated from strong oxidants, strong bases and food and feedstuffs. Cool. 

IMPORTANT DATA
Physical State; Appearance
PALE YELLOW CRYSTALS WITH CHARACTERISTIC ODOUR. 

Physical dangers
 

Chemical dangers
May decompose explosively on shock, friction or concussion. May explode on heating even in the absence of air. Reacts with strong oxidants and strong bases. On combustion, forms toxic and corrosive gases and fumes including hydrogen chloride and nitrogen oxides. 

Occupational exposure limits
TLV (NOT-ESTABLISHED):.
MAK: Sensitization of skin (SH); (DFG 2004). 

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

Inhalation risk
No indication can be given about the rate at which a harmful concentration of this substance in the air is reached on evaporation at 20°C. 

Effects of short-term exposure
The substance is severely irritating to the skin. The substance is irritating to the eyes and respiratory tract. The substance may cause effects on the blood. This may result in formation of methaemoglobin. Exposure to high concentrations could cause death. 

Effects of long-term or repeated exposure
Repeated or prolonged contact with skin may cause dermatitis. Repeated or prolonged contact may cause skin sensitization. The substance may have effects on the nervous system. This may result in impaired vision. 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 315°C
Melting point: 54°C
Density: 1.7 g/cm³
Solubility in water: none
Vapour pressure at 20°C: negligible
Flash point: 179°C
Auto-ignition temperature: 432°C
Explosive limits, vol% in air: 2.0-22 
The substance is very toxic to aquatic organisms. 

NOTES
Card has been partly updated in October 2005.
See sections Occupational Exposure Limits, Emergency Response. 

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