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外観
無色～うすい黄色透明液体
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解説
塩化ベンジリデンbenzylidene chloride,α，α′‐ジクロロトルエンなどともいう。刺激性，催涙性のある無色の液体。湿気の多い空気中では白煙を生じる。融点－16.2～－16℃，沸点205.15℃，比重1.26。水に不溶，アルコール，エーテルに可溶。
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用途
BPO原料、ベンズアルデヒ ド及び塩化ベン ゾイルの製造に 使用、工業用中 間体。
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製造
トルエンの塩素化により得られる。アルカリや濃硫酸と反応してベンズアルデヒドになる。ベンズアルデヒドの製造原料などとして用いられる。
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説明
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.
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化学的特性
Benzal chloride is a combustible, fuming,
colorless, oily liquid; fumes on exposure to air. Faint, pungent
odor.
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使用
α,α-Dichlorotoluene has been useds as initiator during the atom transfer radical polymerization (ATRP) of styrene and methyl methacrylate.
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一般的な説明
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.
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空気と水の反応
Insoluble in water.
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反応プロフィール
BENZAL CHLORIDE is incompatible with strong oxidizers and strong bases. BENZAL CHLORIDE readily hydrolyzes under acid or alkaline conditions. BENZAL CHLORIDE reacts with metals (except nickel and lead). .
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危険性
Strong irritant and lachrymator. Probable
carcinogen.
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健康ハザード
Acute: vapors are highly irritating to eyes. May be fatal if inhaled, swallowed, or absorbed through skin.
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火災危険
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.
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安全性プロファイル
Confirmed carcinogen
with experimental carcinogenic and
neoplastigenic data. Poison by inhalation.
Moderately toxic by ingestion. A strong
irritant and lachrymator. Causes central
nervous system depression. Mutation data
reported. When heated to decomposition it
emits toxic fumes of Cl-. See also
CHLORINATED HYDROCARBONS,
AROMATIC.
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職業ばく露
Benzal chloride is used almost exclusively
for the manufacture of benzaldehyde. It can also be
used to prepare cinnamic acid and benzoyl chloride.
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輸送方法
UN1886 Benzylidene chloride, Hazard class 6.1;
Label 6.1—Poisonous materials.
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不和合性
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.
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廃棄物の処理
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.
