1,2-ジクロロアセチレン

危険有害性情報のコード(GHS)

• 絵表示(GHS)

  

• 注意喚起語

  Warning

• 危険有害性情報

  H200：不安定火薬類

  H351：発がんのおそれの疑い

  H373：長期にわたる、または反復暴露により臓器の障 害のおそれ

• 注意書き

  P201：使用前に取扱説明書を入手すること。

  P202：全ての安全注意を読み理解するまで取り扱わないこ と。

  P260：粉じん/煙/ガス/ミスト/蒸気/スプレーを吸入しないこ と。

  P281：指定された個人用保護具を使用すること。

  P308+P313：暴露または暴露の懸念がある場合：医師の診断/手当てを 受けること。

  P314：気分が悪い時は、医師の診断/手当てを受けること。

  P372：火災の場合に爆発する危険性あり。

  P373：炎が火薬類に届いたら消火活動をしないこと。

  P380：区域より退避させること。

  P401：．．．に保管すること。

  P405：施錠して保管すること。

  P501：内容物/容器を．．．に廃棄すること。

1,2-ジクロロアセチレン 化学特性,用途語,生産方法

• 性質

  可燃性物質

• 用途

  合成中間体

• 化学的特性

  DCA is a volatile, pyrophoric oil. It has an unpleasant, sweetish odor. A gas above 32°C/90°F.

• 使用

  DCA is not commercially available in large quantities. It is reportedly a by-product of the synthesis of vinylidene chloride and is not known to be used commercially.

• 調製方法

  DCA is a highly toxic, spontaneously combustible, undesired, and noncommercial product of the dehydrochlorination of trichloroethylene. It has resulted from exposure of trichloroethylene vapor to Hopcalite in a closed environmental system (submarine) and soda lime in closed circuit (rebreathing) anesthesia machines and from exposure of trichloroethylene liquid to caustic in degreaser tanks. It may also be an undesired by-product during chemical processes such as production of vinylidene chloride. When DCA was decomposed in the presence of oxygen, seven substanceswere found: phosgene, hexachlorobutadiene, chloroform, carbon tetrachloride, trichloroacetyl chloride, tetrachloroethylene, and trichloroacryloyl chloride.

• 一般的な説明

  Volatile oil with a disagreeable, sweetish odor. Mp: -68 to -65°C; bp: 32-34°C. Density: 1.38 g cm-3. Is not produced commercially.

• 空気と水の反応

  Ignites or explodes upon contact with air (MCA Case History 1989 (1974)).

• 反応プロフィール

  Dichloroethyne is a reducing agent. Incompatible with oxidizing agents. Can ignite or explode on contact with air or if heated. Can explode if shocked. Burns in the presence of chlorine to form phosgene (Ann. Chem. 640:5(1961)).

• 健康ハザード

  Dichloroacetylene is a neurotoxin; it is carcinogenic in experimental animals.

• 安全性プロファイル

  Confirmed carcinogen with experimental carcinogenic data. Poison by inhalation. Central nervous system effects. Can be formed by thermal decomposition (>70℃) from trichloroethylene. Symptoms include a disabling nausea and intense jaw pain. Strong explosive when shocked or exposed to heat or air. Can react vigorously with oxidizing materials. When heated to decomposition or on contact with acid or acid fumes it emits highly toxic fumes of Cl-. See also ACETYLENE COMPOUNDS and CHLORINATED HYDROCARBONS , ALIPHATIC.

• 職業ばく露

  DCA, dichloroacetylene, is not produced commercially and is a possible decomposition product of trichloroethylene or trichloroethane. Reported to be a by-product of vinylidene chloride (see V:0220). Also, a closed circuit anesthesia with trichloroethylene, heat and moisture produced by soda-lime absorption of CO2 may produce dichloroacetylene (DCA) along with phosgene and carbon monoxide (CO).

• 発がん性

  The IARC concluded that there is limited evidence for the carcinogenicity of DCA to experimental animals based on treatment-related increases in the incidence of adenocarcinomas of the kidney in male mice, benign tumors of the liver and kidney, and an increased incidence of lymphomas in rats.

• 代謝経路

  By the incubation of dichloroacetylene with rat liver and kidney subcellular fractions, the formation of S- (1,2-dichlorovinyl)glutathione (DCVG) is observed, and N-acetyl-S-(1,2-dichlorovinyl)-L-cysteine is identified as a urinary metabolite in rats.

• 輸送方法

  Explosive! Dichloroacetylene is cited by DOT as “FORBIDDEN.”

• 不和合性

  An unstable explosive; heat or shock may cause explosion. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong acids (forms poisonous gases of phosgene and hydrogen chloride), strong bases.

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