alpha-Chloro-p-xylene

  • 1-(Chloromethyl)-4-methylbenzene
  • (p-Chloromethyl)toluene
  • p-Methylbenzyl chloride
  • 4-Methylbenzyl chloride
  • (4-Methylphenyl)methyl chloride
  • p-Xylyl chloride
Formula
4-(CH3)C6H4CH2Cl
Structure
Description
Clear, colorless to light yellow liquid with an irritating odor.

Registry Numbers and Inventories.
CAS
104-82-5
EC (EINECS/ELINCS)
203-241-1
EC Class
irritant
R 22 34 36
S 26 36/37/39 45
RTECS
ZE4030000
RTECS class
Other
UN (DOT)
1610
Merck
12,10224
Beilstein/Gmelin
507387
Beilstein Reference
4-05-00-00966
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C8H9Cl
Formula mass
140.61
Melting point, °C
5
Boiling point, °C
200
Vapor pressure, mmHg
0.5 (25 C)
Density
1.066 g/cm3 (20 C)
Solubility in water
Insoluble
Refractive index
1.538
Partition coefficient, pKow
2.95
Heat of vaporization
41.7

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. Refrigerator (approx 4 C).
Handling
Wash thoroughly after handling. Use only in a well ventilated area. 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 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. Provide ventilation.
Disposal code
2
Stability
Stable under normal temperatures and pressures. Fuming liquid.
Incompatibilities
Oxidizing agents
Decomposition
Hydrogen chloride, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
74
Autoignition, °C
> 600
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. Combustible Liquid. Containers may explode when heated. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Use water spray to cool fire-exposed containers.
Fire potential
May burn but not readily ignited.
Hazards
Containers may explode when heated.
Combustion products
Fire will produce irritating, corrosive and/or toxic gases.
Health
1
 
Flammability
2
 
 
Reactivity
0
 

Health.
Exposure effects
Agitation and syncope, both attributed to panic, have been reported.
   Ingestion
May cause irritation of the digestive tract.
   Inhalation
Causes respiratory tract irritation.
   Skin
Causes severe skin irritation.
   Eyes
Causes severe eye irritation. Lachrymator.

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
1610
Response guide
Hazard class
6.1
Packing Group
II
 
USCG CHRIS Code
CLF
 
36 Halogenated hydrocarbons
HS Code
2903 69 90