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DINITROTOLUENE (MIXED ISOMERS)ICSC: 0465
DNT (mixed isomers)
Methyl dinitrobenzene (mixed isomers)
Dinitrotoluol (mixed isomers)
April 2005
CAS #: 25321-14-6
UN #: 3454
EC Number: 246-836-1

  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. Risk of explosion on contact with many substances.  NO open flames.  Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust.  Use water spray, powder, foam, carbon dioxide.  In case of fire: keep drums, etc., cool by spraying with water. Combat fire from a sheltered position. 

 PREVENT DISPERSION OF DUST! AVOID ALL CONTACT! AVOID EXPOSURE OF (PREGNANT) WOMEN!  
  SYMPTOMS PREVENTION FIRST AID
Inhalation Blue lips, fingernails and skin. Headache. Dizziness. Nausea. Confusion. Convulsions. Unconsciousness.  Use local exhaust or breathing protection.  Fresh air, rest. Artificial respiration may be needed. Refer for medical attention. 
Skin MAY BE ABSORBED! See Inhalation.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention . 
Eyes   Wear safety goggles.  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. Wash hands before eating.  Rinse mouth. Give one or two glasses of water to drink. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Consult an expert! Personal protection: chemical protection suit including self-contained breathing apparatus. Do NOT let this chemical enter the environment. 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

 

Transportation
UN Classification
UN Hazard Class: 6.1; UN Pack Group: II 

STORAGE
Fireproof. Separated from strong bases, food and feedstuffs, oxidants and strong reducing agents. Well closed. Keep in a well-ventilated room. Store in an area without drain or sewer access. 
PACKAGING
Do not transport with food and feedstuffs. 
DINITROTOLUENE (MIXED ISOMERS) ICSC: 0465
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
YELLOW CRYSTALLINE POWDER WITH CHARACTERISTIC ODOUR. 

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

Chemical dangers
Heating may cause violent combustion or explosion. Decomposes on heating. This produces toxic and corrosive fumes including nitrogen oxides even in the absence of air. Reacts with reducing agents, strong bases and oxidants. This generates fire and explosion hazard. 

Formula: C7H6N2O4 / C6H3(CH3)(NO2)2
Molecular mass: 182.1
Decomposes at 250-300°C
Melting point: 54-71°C
Relative density (water = 1): 1.3 (liquid)
Density (solid): 1.52 g/cm³
Solubility in water: very poor
Vapour pressure, Pa at 20°C: 2.4
Relative vapour density (air = 1): 6.28
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.01
Flash point: 207°C c.c.
Auto-ignition temperature: 400°C
Octanol/water partition coefficient as log Pow: 2.0  


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The substance may cause effects on the blood. This may result in the formation of methaemoglobin. The effects may be delayed. Medical observation is indicated. 

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed, especially if powdered. 

Effects of long-term or repeated exposure
The substance may have effects on the blood. This may result in the formation of methaemoglobin. This substance is possibly carcinogenic to humans. Animal tests show that this substance possibly causes toxicity to human reproduction or development. 


OCCUPATIONAL EXPOSURE LIMITS
TLV: 0.2 mg/m3, as TWA; (skin); A3 (confirmed animal carcinogen with unknown relevance to humans); BEI issued.
MAK: skin absorption (H); carcinogen category: 2 

ENVIRONMENT
The substance is harmful to aquatic organisms. 

NOTES
Commercial grades of DNT typically consist of a mixture of all 6 isomers, but mainly 2,4-DNT(78%) and 2,6-DNT (19%).
Other UN-number: 1600 (molten).
Depending on the degree of exposure, periodic medical examination is suggested.
Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available.
Do NOT take working clothes home.
See ICSCs 0727 and 0728. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: T, N; R: 45-23/24/25-48/22-62-68-51/53; S: 53-45-61; Note: E 

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       Toxicological Abbreviations