1,2-Dichloro-4-nitrobenzene

  • 3,4-Dichloronitrobenzene
  • 1-Nitro-3,4-dichlorobenzene
  • Benzene, 1,2-dichloro-4-nitro-
Formula
C6H3Cl2NO2
Structure
Description
Colorless to tan needle-like crystals.
Uses
Chemical intermediate for herbicides (eg, propanil) and insecticides & dye intermediates.

Registry Numbers and Inventories.
CAS
99-54-7
EC (EINECS/ELINCS)
202-764-2
EC Class
harmful, irritant, dangerous for the environment
R 20/21/22 33 36 51/53
S 26 36/37/39 61
RTECS
CZ5250000
RTECS class
Mutagen; Reproductive Effector; Primary Irritant
UN (DOT)
2811
Beilstein/Gmelin
2210335
Beilstein Reference
0-10-00-00624
Swiss Giftliste 1
G-5316
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C6H3Cl2NO2
Formula mass
192.00
Melting point, °C
38 - 41
Boiling point, °C
256
Vapor pressure, mmHg
0.01
Vapor density (air=1)
6.63
Saturation Concentration
18 ppm (0.0018%) at 20 C (calculated)
Critical temperature
485
Density
1.4558 g/cm3 (20 C)
Solubility in water
150 mg/L

Hazards and Protection.
Storage
Store in a cool, dry place. Store in a tightly closed container.
Handling
Wash thoroughly after handling. Use only in a well ventilated area. Avoid contact with eyes, skin, and clothing. 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
Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal.
Disposal code
3
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents, strong bases.
Decomposition
Hydrogen chloride, nitrogen oxides, carbon monoxide, carbon dioxide, nitrogen.

Fire.
Flash Point,°C
123
Autoignition, °C
420
Upper exp. limit, %
8.4
Lower exp. limit, %
2.1
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 spray, dry chemical, carbon dioxide, or appropriate foam.
Fire potential
This chemical is combustible.
Hazards
Contact with metals may evolve flammable hydrogen gas.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Poison_Class
2
Exposure effects
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May be harmful if swallowed.
   Inhalation
May cause respiratory tract irritation.
   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 immediately.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   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
2811
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
HS Code
2904 90 85