Benzyl chloride

  • a-Chlorotoluene
  • o-Chlorotoluene
  • 1-Chloro-2-methyl benzene
  • (Chloromethyl) benzene
  • Chloromethylbenzene
  • Tolyl chloride
Formula
C6H5CH2Cl
Structure
Description
Colorless liquid, unpleasant, irritating, pungent odor, lachrymator.
Uses
Manufacture benzyl compounds, perfumes, pharmaceutical products, dyes, synthetic tannins, & artificial resins.

Registry Numbers and Inventories.
CAS
100-44-7
EC (EINECS/ELINCS)
202-853-6
EC Index Number
602-037-00-3
EC Class
Carcinogenic Category 2; Toxic; Harmful; Irritant
R 45 22 23 37/38 41 48/22
RTECS
XS8925000
RTECS class
Tumorigen; Mutagen; Reproductive Effector
UN (DOT)
1738
Merck
13,1131
Beilstein/Gmelin
471308
Beilstein Reference
4-05-00-00809
RCRA
P028
Swiss Giftliste 1
G-1252
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
-41.2
Boiling point, °C
179.3
Vapor pressure, mmHg
1.6 (20 C)
Vapor density (air=1)
4.36
Saturation Concentration
1316 ppm (0.13%) at 20 C (calculated)
Odor Threshold Odor threshold 0.235 mg/m3
Critical temperature
411
Critical pressure
38.5
Density
1.103 g/cm3 (20 C)
Solubility in water
0.465 g/L (30 C)
Viscosity
1.28 cp (25 C)
Surface tension
36.63 g/s2 (20 C)
Refractive index
1.5415 (20 C)
Dipole moment
1.87 D
Dielectric constant
6.43
Partition coefficient, pKow
2.30
Heat of vaporization
46.2 kJ/mol
Heat of combustion
-3712 kJ/mol

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Keep container closed when not in use. Store in a tightly closed container. Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from moisture.
E B3 D1B D2A
Handling
Wash thoroughly after handling. Wash hands before eating. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Do not ingest or inhale. Do not allow contact with water. Discard contaminated shoes. Keep from contact with moist air and steam.
Protection
Eyes: Wear safety glasses and chemical goggles if splashing is possible. Skin: Wear appropriate protective gloves and clothing 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. 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. Use water spray to disperse the gas/vapor. Provide ventilation. Do not get water inside containers.
Disposal code
2
Stability
Unstable. Inhibitors such as propylene oxide, sodium carbonate solution, lime, or trimethylamine must be used to prevent polymerization.
Incompatibilities
Water, dimethyl sulfoxide, oxidizing material, steam. Corrodes all common metals except lead and nickel (explosive when heated).
Decomposition
Hydrogen chloride, chlorine, carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
52
Autoignition, °C
585
Upper exp. limit, %
7.1
Lower exp. limit, %
1.1
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. May accumulate static electrical charges, and may cause ignition of its own vapors. Forms explosive mixtures with air. Extinguishing media: Do NOT use water directly on fire. Use water spray to cool fire-exposed containers. Use foam, dry chemical, or carbon dioxide. Do NOT get water inside containers.
Fire potential
Combustible liquid and vapor.
Hazards
It burns but does not ignite readily. It may ignite combustibles. When heated to decomposition, it emits toxic and corrosive fumes. Some organic chlorides decompose to yield phosgene. Incompatible with active metals such as copper, aluminum, magnesium, iron, zinc, and tin and keep from strong oxidizing agents. Avoid contact with acids or acid fumes. Keep separate from oxidizing materials. May become unstable at elevated temperatures and pressures; may react with water resulting in some nonviolent release of energy. Polymerizes with evolution of heat and hydrogen chloride when in contact with all common metals except nickel and lead.
Combustion products
Fire will produce irritating, corrosive and/or toxic gases.
Health
3
 
Flammability
2
 
 
Reactivity
1
 

Health.
Exposure limit(s)
TLV: 1 ppm; 5.2 mg/m3 (as TWA) (ACGIH 1992-1993). OSHA PEL: TWA 1 ppm (5 mg/m3) NIOSH REL: C 1 ppm (5 mg/m3) 15-minute NIOSH IDLH: 10 ppm
Carcinogin
G-A3, I-2A, CP65
Poison_Class
3
Exposure effects
Mild leukopenia(abnormally low number of circulating white blood cells), liver function disturbances and kidney problems.
   Ingestion
Corrosive. Swallowing can cause severe burns of the mouth, throat, and stomach, leading to death. Can cause sore throat, vomiting, diarrhea. May also cause systemic poisoning with symptoms paralleling inhalation.
   Inhalation
Causes severe irritation of upper respiratory tract with coughing, burns, breathing difficulty, and possible coma. Causes chemical burns to the respiratory tract. Inhalation may be fatal as a result of spasm, inflammation, edema of the larynx and bronchi, chemical pneumonitis and pulmonary edema.
   Skin
Prolonged and/or repeated contact may cause irritation and/or dermatitis. Contact with liquid is corrosive and causes severe burns and ulceration.
   Eyes
Contact with liquid or vapor causes severe burns and possible irreversible eye damage. Lachrymator.

First aid
 
   Ingestion
Never give anything by mouth to an unconscious person. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. DO NOT use mouth-to-mouth respiration. 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. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Destroy contaminated shoes.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed. Extensive irrigation is required (at least 30 minutes).

Transport.
UN number
1738
Response guide
Hazard class
6.1
Packing Group
II
 
USCG CHRIS Code
BCL
 
36 Halogenated hydrocarbons
HS Code
2903 69 90
 
Std. Transport #
4921209
 
IMO Pollution Category
B
IMO Hazard code
S/P