General Description
A colorless oily liquid with a faint aromatic odor. Insoluble in water and denser than water. Strongly irritates skin and eyes. Used to manufacture dyes.
Reactivity Profile
BENZYLIDENE CHLORIDE(98-87-3) is incompatible with strong oxidizers and strong bases. BENZYLIDENE CHLORIDE(98-87-3) readily hydrolyzes under acid or alkaline conditions. BENZYLIDENE CHLORIDE(98-87-3) reacts with metals (except nickel and lead). .
Air & Water Reactions
Insoluble in water.
Hazard
Strong irritant and lachrymator. Probable
carcinogen.
Health Hazard
Acute: vapors are highly irritating to eyes. May be fatal if inhaled, swallowed, or absorbed through skin.
Potential Exposure
Benzal chloride is used almost exclusively
for the manufacture of benzaldehyde. It can also be
used to prepare cinnamic acid and benzoyl chloride.
Fire Hazard
Fire may produce irritating or poisonous gases. Runoff from fire control water may give off poisonous gases and may cause pollution. Cylinder may explode in the heat of fire. Reacts with water to release hydrochloric acid.
First aid
If this chemical gets into the eyes, remove any
contact lenses at once and irrigate immediately for at least
15 minutes, occasionally lifting upper and lower lids. Seek
medical attention immediately. If this chemical contacts the
skin, remove contaminated clothing and wash immediately
with soap and water. Seek medical attention immediately.
If this chemical has been inhaled, remove from exposure,
begin rescue breathing (using universal precautions, including
resuscitation mask) if breathing has stopped and CPR if
heart action has stopped. Transfer promptly to a medical
facility. When this chemical has been swallowed, get medical
attention. Give large quantities of water and induce
vomiting. Do not make an unconscious person vomit.
Medical observation is recommended for 24 to 48 hours
after breathing overexposure, as pulmonary edema may be
delayed. As first aid for pulmonary edema, a doctor or
authorized paramedic may consider administering a drug or
other inhalation therapy.
Shipping
UN1886 Benzylidene chloride, Hazard class 6.1;
Label 6.1—Poisonous materials.
Incompatibilities
May form explosive mixture with air.
Reacts with water, air, or heat, forming fumes of hydrochloric
acid. Reacts (possibly violently) with acids, bases,
strong oxidizers; many metals; potassium, sodium, aluminum.
Attacks plastics and coatings.
Description
Benzal chloride (dichloromethylbenzene, a,adichlorotoluene, benzylidene chloride) is produced exclusively by the side-chain chlorination of toluene. It was first synthesized in 1848 by A. CAHOURS, by using the reaction of PCl5 with benzaldehyde. Almost the sole application of benzal chloride is in the production of benzaldehyde.
Chemical Properties
Benzal chloride is a combustible, fuming,
colorless, oily liquid; fumes on exposure to air. Faint, pungent
odor.
Chemical Properties
colourless oily liquid
Waste Disposal
Incineration @ 816 C,
0.5 second minimum for primary combustion; 1204 C,
1.0 second for secondary combustion; elemental chlorine
formation may be alleviated through injection of steam or
methane into the combustion process.
Physical properties
Benzal chloride is a liquid which fumes in moist
air and which has a pungent odor and a strong
irritant effect on the mucous membranes and eyes.Benzal chloride is freely soluble in alcohol,
ether, chloroform, and carbon tetrachloride, but
only slightly soluble in water (0.05 g/L at 5 ℃;
0.25 g/L at 39 ℃). The solubility of chlorine in
100 g of benzal chloride is
6.2 g at 30 ℃,
4.3 g at 50 ℃,
1.5 g at 100 ℃.
Uses
manufacture of benzaldehyde, cinnamic acid.
Uses
α,α-Dichlorotoluene has been useds as initiator during the atom transfer radical polymerization (ATRP) of styrene and methyl methacrylate.
Definition
ChEBI:Benzal chloride is a member of benzenes.
Synthesis Reference(s)
The Journal of Organic Chemistry, 15, p. 795, 1950
DOI: 10.1021/jo01150a012Tetrahedron Letters, 9, p. 4951, 1968
storage
Color Code—Blue: Health Hazard/Poison: Storein a secure poison location. Store in tightly closed containers in a cool, well-ventilated area away from oxidizers,strong acids, flammable materials, sources fire as this material is combustible. Sources of ignition, such as smokingand open flames, are prohibited where this chemical isused, handled, or stored in a manner that could create apotential fire or explosion hazard.
