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
EC Risk Phrase R 20 51/53
EC Safety Phrase 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.
NFPA 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 130
Hazard class 3
Packing Group III  
USCG CHRIS Code CTO  
USCG Compatatibility Group 36 Halogenated hydrocarbons
HS Code 2903 69 90  
IMO Chemical Code 17
IMO Pollution Category A
IMO Hazard code S/P