2,3-Dinitrotoluene

  • 1-Methyl-2,3-dinitrobenzene
Formula
C7H6N2O4
Structure
Description
Yellow crystals.
Uses
Intermediate in the manufacturing of toluene diisocyanate. Dinitrotoluenes.

Registry Numbers and Inventories.
CAS
602-01-7
EC (EINECS/ELINCS)
210-013-5
EC Index Number
609-050-00-3
EC Class
Carcinogenic Category 2; Mutagenic Category 3; Toxic for reproduction Category 3; Toxic; Harmful; Dangerous for the Environment
RTECS
XT1400000
RTECS class
Mutagen; Primary Irritant
UN (DOT)
2038
Beilstein/Gmelin
2212428
Beilstein Reference
4-05-00-00865
Canada DSL/NDSL
NDSL
US TSCA
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C7H6N2O4
Formula mass
182.15
Melting point, °C
59-61
Decomposition point, °C
250-300
Vapor density (air=1)
6.28
Density
1.2625 g/cm3 (111 C)
Solubility in water
Insoluble
Partition coefficient, pKow
2.20

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents.
Decomposition
Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, nitrogen.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Fire potential
Dinitrotoluenes may burn but do not ignite readily. Combustible: moderate fire hazard.
Hazards
Containers may explode when heated.
Combustion products
When heated to decomposition it emits toxic fumes of nitrogen oxides.
Health
3
 
Flammability
1
 
 
Reactivity
3
 

Health.
Exposure limit(s)
TLV: ppm; 1.5 mg/m3 (as TWA) (skin) (ACGIH 1996).
Exposure effects
Prolonged exposure may cause anemia and methemoglobinemia, characterized by dizziness, drowsiness, headache, breath shortness, cyanosis, rapid heart rate and chocolate-brown colored blood. Chronic exposure may cause liver damage. There is a danger of cumulative effects.
   Ingestion
May cause irritation of the digestive tract. May cause liver damage. Methemoglobinemia is characterized by dizziness, drowsiness, headache, breath shortness, cyanosis with bluish skin, rapid heart rate and chocolate-brown colored blood. Overexposure may cause methemoglobinemia. May be harmful if swallowed.
   Inhalation
May cause respiratory tract irritation. Methemoglobinemia is characterized by dizziness, drowsiness, headache, breath shortness, cyanosis with bluish skin, rapid heart rate and chocolate-brown blood. Inhalation can cause systemic acidosis and methemoglobinemia. May cause liver damage.
   Skin
May cause skin irritation. May cause cyanosis of the extremities.
   Eyes
Causes eye irritation. May cause chemical conjunctivitis.

First aid
 
   Ingestion
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
2038
Response guide
Hazard class
6.1
Packing Group
II
 
42. Nitro compounds