3,4-Dichloroaniline

  • 3,4-Dichlorobenzeneamine
  • 1-Amino-3,4-dichlorobenzene
Formula
3,4-(Cl)2C6H3NH2
Structure
Description
Light tan to dark gray crystals or brown solid.
Uses
Chemical intermediate for dyes and pesticides.

Registry Numbers and Inventories.
CAS
95-76-1
EC (EINECS/ELINCS)
202-448-4
EC Index Number
612-010-00-8
EC Class
toxic, dangerous for the environment
R 23/24/25 33 50/53
S 28 36/37 45 60 61
RTECS
BX2625000
RTECS class
Mutagen; Primary Irritant
UN (DOT)
1590
Merck
13,3079
Beilstein/Gmelin
636837
Beilstein Reference
4-12-00-01257
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C6H5Cl2N
Formula mass
162.02
Melting point, °C
70 - 73
Boiling point, °C
272
Vapor pressure, mmHg
0.006 (25 C)
Vapor density (air=1)
5.59
Critical temperature
527
Critical pressure
40.6
Density
1.567 g/cm3 (20 C)
Solubility in water
< 1g/L
Viscosity
6.6173 pa.s @ 344.65 K
Surface tension
4.3741x10-2 n.m @ 344.65 K
pKa/pKb
11.10 (pKb)
Partition coefficient, pKow
2.69
Heat of vaporization
66.9 kJ/mol
Heat of combustion
-725 kJ/mol

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Poison room locked.
Handling
Wash thoroughly after handling. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid ingestion and inhalation. Wash clothing before reuse.
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
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.
Disposal code
9
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents, acids, acid anhydrides, acid chlorides.
Decomposition
Hydrogen chloride, nitrogen oxides, carbon monoxide, carbon dioxide, nitrogen.

Fire.
Flash Point,°C
118
Autoignition, °C
265
Upper exp. limit, %
7.2
Lower exp. limit, %
2.8
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. Use water spray to keep fire-exposed containers cool. Containers may explode when heated. Extinguishing media: Do NOT get water inside containers. For small fires, use dry chemical, carbon dioxide, or water spray. For large fires, use dry chemical, carbon dioxide, alcohol-resistant foam, or water spray. Cool containers with flooding quantities of water until well after fire is out.
Fire potential
This chemical is combustible.
Hazards
When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
3
 
Flammability
1
 
 
Reactivity
0
 

Health.
Exposure effects
CNS effects include headache, dizziness, altered mental status, confusion (lethargy progressing coma), seizures, syncope; occur secondary to CNS hypoxia, usually with levels > 20%.
   Ingestion
May cause irritation of the digestive tract. May be harmful if swallowed.
   Inhalation
May cause respiratory tract irritation.
   Skin
May be harmful if absorbed through the skin. Causes severe skin irritation and possible burns.
   Eyes
Causes severe eye irritation and possible burns.

First aid
 
   Ingestion
Do NOT induce vomiting. 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 breathing is difficult, give oxygen. Get medical aid. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
   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. Wash clothing before reuse.
   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
1590
Response guide
Hazard class
6.1
Packing Group
II
 
HS Code
2921 42 10