2-Chlorotoluene

  • 1-Chloro-2-Methylbenzene
  • 2-Chloro-1-Methylbenzene
  • o-Chlorotoluene
Formula
C7H7Cl
Structure
Description
Colorless liquid.
Uses
Solvent, dyestuff intermediate, in organic syntheses.

Registry Numbers and Inventories.
CAS
95-49-8
EC (EINECS/ELINCS)
202-424-3
EC Index Number
602-040-00-X
EC Class
Harmful; Dangerous for the Environment
R 20 51/53
S 24/25 61
RTECS
XS9000000
RTECS class
Primary Irritant
UN (DOT)
2238
Merck
13,2190
Beilstein/Gmelin
1904175
Beilstein Reference
4-05-00-00805
EPA OPP
216300
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C7H7Cl
Formula mass
126.59
Melting point, °C
-36
Boiling point, °C
159
Vapor pressure, mmHg
3
Vapor density (air=1)
4.38
Saturation Concentration
4.7 x 10(3) ppm (0.47%) at 25 C (calculated)
Critical temperature
381.1
Critical pressure
38.6
Density
1.0825 g/cm3
Solubility in water
90 mg/L
Viscosity
0.89 cp (30 C)
Surface tension
33.42 g/s2 (20 C)
Refractive index
1.5352
Partition coefficient, pKow
3.42
Heat of vaporization
43.10 kJ/mol
Heat of combustion
-3747 kJ/mol

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area.
Handling
Wash thoroughly after handling. Use only in a well ventilated area. Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
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
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Use a spark-proof tool. A vapor suppressing foam may be used to reduce vapors.
Disposal code
2
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents, reducing agents, acids, alkalis.
Decomposition
Hydrogen chloride, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, chlorine.

Fire.
Flash Point,°C
48
Autoignition, °C
> 600
Upper exp. limit, %
12.6
Lower exp. limit, %
1.0
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Will burn if involved in a fire. Use water spray to keep fire-exposed containers cool. Containers may explode in the heat of a fire. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog, or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Water may be ineffective. Do NOT use straight streams of water.
Fire potential
Slight risk when exposed to heat or flame.
Hazards
Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers.
Combustion products
May contain toxic chloride fumes.
Health
2
 
Flammability
2
 
 
Reactivity
1
 

Health.
Exposure limit(s)
NIOSH REL: TWA 50 ppm (250 mg/m3) ST 75 ppm (375 mg/m3)
Poison_Class
3 (Strong toxins)
Exposure effects
   Ingestion
May cause digestive tract disturbances.
   Inhalation
Causes severe respiratory tract irritation. Vapors may cause dizziness or suffocation.
   Skin
Causes severe skin irritation.
   Eyes
Causes severe 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. 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
2238
Response guide
Hazard class
3
Packing Group
III
 
USCG CHRIS Code
CTO
 
36 Halogenated hydrocarbons
HS Code
2903 69 90
 
IMO Chemical Code
17
IMO Pollution Category
A
IMO Hazard code
S/P