Dinitrotoluene

  • Dinitrotoluol
  • Methyldinitrobenzene
Formula
C7H6N2O4
Structure
Description
An oily liquid consisting of the three isomers.
Uses
Production of diisocyanate, manufacture of explosives.

Registry Numbers and Inventories.
CAS
25321-14-6
EC (EINECS/ELINCS)
246-836-1
EC Index Number
609-007-00-9
EC Class
Carcinogenic Category 2; Mutagenic Category 3; Toxic for reproduction Category 3; Toxic; Harmful; Dangerous for the Environment
RTECS
XT1300000
RTECS class
Tumorigen; Mutagen; Reproductive Effector
UN (DOT)
2038
Beilstein/Gmelin
NA
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C7H6N2O4
Formula mass
182.15
Melting point, °C
70
Boiling point, °C
250
Vapor pressure, mmHg
1
Vapor density (air=1)
6.3
Density
1.3208 g/cm3 (20 C)
Solubility in water
Insoluble

Hazards and Protection.
Storage
Unspecified dinitrotoluene solid--separate from strong oxidizers and from reducing agents, protect from damage to container.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate eye protection and protective clothing to prevent skin and eye contact. Facilities for quickly drenching the body should be provided within the immediate work area for emergency use where there is a possibility of exposure. Employees should be provided with, and required to use, impervious clothing, gloves, face-shields (eight-inch minimum), and other appropriate protective clothing.
Respirators
Escape from suddenly occurring respiratory hazards: respirator classes: any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister having a high-efficiency particulate filter. Any appropriate escape-type, self-contained breathing apparatus.
Small spills/leaks
Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. Cover with plastic sheet to prevent spreading. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.
Stability
Dinitrotoluenes may explode if confined while burning. Dinitrotoluene can be detonated only by a very strong initiator. It may be an explosion hazard when involved in a fire. Moderate explosion hazard. May explode from heat or contamination if confined.
Incompatibilities
Incompatible with strong oxidizing agents, caustics, nitric acid, active metals, tin and zinc May react violently in the presence of a base Attacks some forms of plastics, rubbers and coatings.
Decomposition
When heated to decomposition it emits toxic fumes of nitrogen oxides.

Fire.
Flash Point,°C
207
Fire fighting
SMALL FIRES: Dry chemical, carbon dioxide or water spray. LARGE FIRES: Water spray, fog or regular foam. Move containers from fire area if you can do it without risk. Dike fire control water for later disposal; do not scatter the material. Use water spray or fog; do not use straight streams. FIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Do not get water inside containers. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. For massive fire, use unmanned hose holders or monitor nozzles; if this is impossible, withdraw from area and let fire burn.
Fire potential
May burn but does not ignite readily.
Hazards
Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form.
Combustion products
When heated to decomposition it emits toxic fumes of nitrogen oxides.
Health
3
 
Flammability
1
 
 
Reactivity
3
 

Health.
Exposure limit(s)
OSHA PEL: TWA 1.5 mg/m3 skin NIOSH REL: Ca TWA 1.5 mg/m3 skin See Appendix A NIOSH IDLH: Potential occupational carcinogen 50 mg/m3
Exposure effects
Respiratory depression secondary to hypoxia may occur. CNS depression is secondary to hypoxia from methemoglobinemia. DNT was NOT teratogenic in rats, and had no effects in a 3- generation study in rats. Testicular effects have been seen in laboratory animals, but not in exposed workers.
   Ingestion
Nausea and vomiting may be secondary to methemoglobinemia.
   Inhalation
Acute effects - blue lips, fingernails and skin. Headache, dizziness, nausea, confusion, convulsions and unconsciousness. Irritates the eyes and skin. May cause effects on the central nervous and cardiovascular system and the blood, resulting in methemoglobin. Effects may be delayed.<BR>Chronic effects - May cause effects on the central nervous and cardiovascular system and the blood, resulting in methemoglobin.
   Skin
Redness. See inhalation. May be absorbed through the skin.
   Eyes
Headache can occur. Redness.

First aid
 
   Ingestion
DO NOT INDUCE VOMITING. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. Be prepared to transport the victim to a hospital if advised by a physician. If the victim is convulsing or unconscious, do not give anything by mouth, ensure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. IMMEDIATELY transport the victim to a hospital.
   Inhalation
IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. IMMEDIATELY call a physician and be prepared to transport the victim to a hospital even if no symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used.
   Skin
IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. IMMEDIATELY call a hospital or poison control center even if no symptoms (such as redness or irritation) develop. IMMEDIATELY transport the victim to a hospital for treatment after washing the affected areas.
   Eyes
First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

Transport.
UN number
2038
Response guide
Hazard class
6.1
Packing Group
II
 
USCG CHRIS Code
DNM
 
42 Nitrocompounds
Std. Transport #
4921718 4921224
 
IMO Chemical Code
17
IMO Pollution Category
A
IMO Hazard code
S/P