m-Dinitrobenzene

  • 1,3-Dinitrobenzene
  • 1,3-Dinitrobenzol
  • 1,3-DNB
Formula
C6H4N2O4
Structure
Description
Yellow solid with a slight odor.
Uses
Chemical intermediate for: m-phenylenediamine, used for aramid fibers, spandex fibers, dyes, explosives.

Registry Numbers and Inventories.
CAS
99-65-0
EC (EINECS/ELINCS)
202-776-8
EC Index Number
609-004-00-2
EC Class
Very toxic; Danger of cumulative effects; Dangerous for the Environment
RTECS
CZ7350000
RTECS class
Mutagen; Reproductive Effector; Human Data; Primary Irritant
UN (DOT)
1597
Beilstein/Gmelin
1105654
Beilstein Reference
4-05-00-00739
Swiss Giftliste 1
G-1568
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C6H4N2O4
Formula mass
168.12
Melting point, °C
90
Boiling point, °C
276
Vapor pressure, mmHg
0.008 (25 C)
Vapor density (air=1)
5.8
Density
1.55 g/cm3
Solubility in water
200 mg/L
Surface tension
42.3 g/s2 (95 C)
Partition coefficient, pKow
1.49
Heat of fusion
17.4 kJ/mol
Heat of vaporization
49.4 kJ/mol
Heat of combustion
-2918 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry place. Store in a tightly closed container.
Handling
Wash thoroughly after handling. Wash hands before eating. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Avoid contact with skin and eyes. 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. Reduce airborne dust and prevent scattering by moistening with water. Clean up spills immediately, using the appropriate protective equipment.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents, reducing agents, and strong bases.
Decomposition
Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
137
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 foam, dry chemical, or carbon dioxide.
Fire potential
Slightly flammable. Combustible, often explosive.
Hazards
May explode
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
2
 
Flammability
1
 
 
Reactivity
0
 

Health.
Exposure limit(s)
TLV: 0.15 ppm; 1.0 mg/m3 (as TWA) (skin) (ACGIH 1991-1992). OSHA PEL: TWA 1 mg/m3 skin NIOSH REL: TWA 1 mg/m3 skin NIOSH IDLH: 50 mg/m3
Poison_Class
2
Exposure effects
May cause liver and kidney damage. May cause cancer according to animal studies. May cause reproductive and fetal effects.
   Ingestion
Harmful if swallowed. Causes gastrointestinal irritation with nausea, vomiting and diarrhea. May cause systemic toxicity with acidosis. May cause liver and kidney damage. May cause cyanosis.
   Inhalation
Causes respiratory tract irritation. May cause effects similar to those described for ingestion.
   Skin
Causes severe skin irritation. Absorption into the body may cause cyanosis.
   Eyes
Causes severe eye irritation. May cause eye injury. Effects may be delayed.

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 immediately. Induce vomiting by giving one teaspoon of Syrup of Ipecac.
   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. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Immediately 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
1597
Response guide
Hazard class
6.1
Packing Group
II
 
USCG CHRIS Code
DNB