2,4-Dinitrotoluene

  • 1-Methyl-2,4-dinitrobenzene
Formula
C7H6N2O4
Structure
Description
Solidifies if allowed to cool.
Uses
Chemical intermediate for toluene-2,4-diamine, a toluenediisocyanate int, gelatinizing & waterproofing agent in explosives, chemical intermediate for dyes (former use).

Registry Numbers and Inventories.
CAS
121-14-2
EC (EINECS/ELINCS)
204-450-0
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
R 45 23/24/25 48/22 51/53 62 68
S 53 45 61
RTECS
XT1575000
RTECS class
Tumorigen; Mutagen; Reproductive Effector; Primary Irritant
UN (DOT)
2038
Beilstein/Gmelin
1912834
Beilstein Reference
4-05-00-00865
RCRA
U105
Swiss Giftliste 1
G-1576
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
67-70
Boiling point, °C
300
Vapor pressure, mmHg
0.0021 (25 C)
Vapor density (air=1)
6.27
Density
1.379 g/cm3 (20 C)
Solubility in water
Insoluble
Refractive index
1.442 (20 C)
Partition coefficient, pKow
1.98
Heat of fusion
20.1 kJ/mol
Heat of vaporization
712 kJ/mol
Heat of combustion
-3516 kJ/mol

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 only in a well ventilated area. 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
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions. Provide ventilation.
Stability
Stable under normal temperatures and pressures. There are instances of explosion during manufacture or storage.
Incompatibilities
Oxidizing agents, reducing agents, strong bases, mixture with nitric acid is highly explosive, ignites on contact with sodium oxide.
Decomposition
Nitrogen oxides, carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
147
Autoignition, °C
420
Upper exp. limit, %
8.2
Lower exp. limit, %
1.4
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire, use water fog, dry chemical, carbon dioxide, or regular foam.
Fire potential
Slightly flammable.
Hazards
Decomp is self-sustaining @ 280 deg c. Closed containers may rupture violently when heated.
Combustion products
Nitrogen oxides and dense black smoke are produced in a fire.
Health
3
 
Flammability
1
 
 
Reactivity
3
 

Health.
Exposure limit(s)
TLV: ppm; 1.5 mg/m3 (as TWA) (skin) (ACGIH 1996).
Carcinogin
I-2B, CP65
Poison_Class
1*
Exposure effects
There is a danger of cumulative effects.
   Ingestion
Harmful if swallowed. Causes gastrointestinal irritation with nausea, vomiting and diarrhea. May cause allergic reaction. Ingestion of nitrate containing compounds can lead to methemoglobinemia.
   Inhalation
Causes respiratory tract irritation. Methemoglobinemia is characterized by dizziness, drowsiness, headache, breath shortness, cyanosis with bluish skin, rapid heart rate and chocolate-brown blood. This product contains nitrite which may cause methemoglobinemia.
   Skin
Causes skin irritation.
   Eyes
Causes eye irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Get medical aid immediately. 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 immediately.

Transport.
UN number
2038
Response guide
Hazard class
6.1
Packing Group
II
 
USCG CHRIS Code
DTT
 
42 Nitrocompounds
Std. Transport #
4921738
 
IMO Chemical Code
17
IMO Pollution Category
A
IMO Hazard code
S/P