ジボラン

危険有害性情報のコード(GHS)

• 絵表示(GHS)

  

• 注意喚起語

  Danger

• 危険有害性情報

  H220：極めて可燃性/引火性の高いガス

  H280：加圧ガス；熱すると爆発のおそれ

  H330：吸入すると生命に危険

• 注意書き

  P210：熱/火花/裸火/高温のもののような着火源から遠ざ けること。－禁煙。

  P260：粉じん/煙/ガス/ミスト/蒸気/スプレーを吸入しないこ と。

  P271：屋外または換気の良い場所でのみ使用すること。

  P284：呼吸用保護具を着用すること。

  P304+P340：吸入した場合：空気の新鮮な場所に移し、呼吸しやすい 姿勢で休息させること。

  P310：ただちに医師に連絡すること。

  P320：特別な治療が緊急に必要である（このラベ ルの．．．を見よ）。

  P377：漏洩ガス火災の場合：漏えいが安全に停止されな い限り消火しないこと。

  P381：安全に対処できるならば着火源を除去すること。

  P403：換気の良い場所で保管すること。

  P403+P233：換気の良い場所で保管すること。容器を密閉 しておくこと。

  P405：施錠して保管すること。

  P410+P403：日光から遮断し、換気の良い場所で保管するこ と。

  P501：内容物/容器を．．．に廃棄すること。

ジボラン 化学特性,用途語,生産方法

• 解説

  ジボラン，融点－165 ℃，沸点－92.5 ℃．密度0.447 g cm－3(－112 ℃)．空気中40～50 ℃ で発火燃焼する．水では加水分解し，湿った空気中でも爆発的に反応して H2 とH3BO3になる．加熱，または光照射で分解し，さらに高次のボランを生成する．水素と加熱しても高次ボランを生じる．HClとはB2H5Clを，Cl2 とはBCl3とHClを，メタノールとはHB(OCH3)2を，オレフィンやベンゼンとは，それぞれアルキルボラン，アリールボランを，N(CH3)3とはH3B·N(CH3)3を生じ，これを加熱すると(CH3)2N·BH2となる．また，－120 ℃ でNH3と反応して[H2B(NH3)2][BH4]となり，これを加熱するとボラジンを生じる．オレフィンの重合の触媒，ほかのボラン類の製造原料，ゴム加硫，還元剤，ロケットの燃料，半導体処理などに用いられる．

• 用途

  エピタキシャルシリコンやドープした酸化シリコンのデポジション、イオン注入のためのP型ドーパント 半導体用以外ではオレフィン重合触媒、還元剤、ロケット推進薬の火焔促進薬

• 製法

  水素化アルミニウムリチウムLiAlH4などの金属水素化物と三フッ化ホウ素エチルエーテル錯化合物BF3·(C2H5)2Oとの反応で得られる．

• 説明

  Diborane is a colorless gas at room temperature and atmospheric pressure. It has an unpleasant, distinctive, sickly sweet odor. Diborane is a highly flammable gas that forms a flammable mixture with air over a range of 0.9 percent to 98 percent diborane (at 1 atm). Diborane bums in air (or oxygen) with a blue to green flame. Diborane is considered pyrophoric at room temperature. The gas is easily ignited by a spark or the heat of reaction with moisture in air.
  Pure diborane is insensitive to mechanical shock; however, shock and thermally sensitive mixtures may be formed in the presence of impurities such as oxygen, water, halogenated hydrocarbons, and so on. Thermal decomposition of diborane to hydrogen can result in excessive pressure buildup. Vessels for containment of diborane should be designed to contain such resultant decomposition pressure.

• 化学的特性

  Diborane is a compressed, colorless, and flam- mable gas. It has a nauseating, sickly sweet odor.

• 使用

  Diborane is used as a rocket propellant, in thevulcanization of rubber, as a polymerizationcatalyst, as a reducing agent, in the synthesisof trialkyl boranes, and as a doping agent(Merck 1996).

• 調製方法

  Diborane now can be produced more easily and in larger quantities by the reaction of LiH, NaH or alkali borohydrides with BF3 diethyl etherate, To obtain good yields, the alkali hydrides must be very finely powdered.

• 空気と水の反応

  Highly flammable. Ignites spontaneously in moist air (forms hydrogen and boric acid), [Haz. Chem. Data (1966)]. Oxygen and Diborane form spontaneously explosive mixtures, [J. Amer. Chem. Soc. 76, 1997(1954)].

• 反応プロフィール

  Diborane is a colorless, air and moisture-sensitive gas, highly toxic. Diborane ignites in air. Diborane is very explosive when exposed to heat or flame, on contact with moisture Diborane produces hydrogen gas. Explosive reaction with benzene vapor, chlorine, nitric acid and tetravinyllead [Bretherick, 5th ed., 1995, p. 77]. Explosive reaction with dimethyl sulfoxide [Shriver, 1969, p. 209], violent reaction with halocarbon liquids used as fire extinguishants (e.g., carbon tetrachloride). Reaction with Al or Li produces complex hydrides that may ignite spontaneously in air [Haz. Chem. Data, 1975, p. 114].

• 危険性

  Diborane is pyrophoric and will ignite upon exposure to air. The boiling point is ?135°F and the flammable range is 0.8%–88% in air. The ignition temperature is 100° (37°C) to 140°F (60°C), and the flash point is 130°F (54°C). Diborane will react violently with halogenated fire-extinguishing agents, such as the halons. The four-digit UN identification number is 1911. The NFPA 704 designation is health 4, flammability 4, and reactivity 3. The white section of the diamond has a W with a slash through it, indicating water reactivity.

• 健康ハザード

  Boranes are highly toxic by inhalation, skin absorption or ingestion. They may produce acute or chronic poisoning. Diborane is an irritant to the lungs and kidneys. The primary effect of Diborane poisoning is lung congestion caused by local tissue irritation produced by the exothermic reaction of hydrolysis.

• 火災危険

  Diborane will ignite spontaneously in moist air at room temperature. Also, Diborane reacts violently with vaporizing liquid-type extinguishing agents. Diborane hydrolyzes in water to hydrogen and boric acid. Incompatible with air, halogenated compounds, aluminum, lithium, active metals, oxidized surfaces, chlorine, fuming nitric acid, nitrogen trifluoride, oxygen, and phosphorus trifluoride. Avoid moist air, electrical sparks, open flames or any other heat source. Hazardous polymerization may occur.

• 燃焼性と爆発性

  Diborane is a flammable gas that ignites spontaneously in moist air at room temperature and forms explosive mixtures with air from 0.8% up to 88% by volume. Diborane reacts with halogenated hydrocarbons, and fire extinguishing agents such as Halon or carbon tetrachloride are therefore not recommended. Carbon dioxide extinguishers should be used to fight diborane fires. Fires involving diborane sometimes release toxic gases such as boron oxide smoke.

• 化学性质

  ヒドロホウ素化反応剤

• 材料の用途

  Common metals are suitable as materials of construction. These include the following metals and metal alloys: chrome-molybdenum steel, Type 300 stainless steel, brass, lead, Monel, K-Monel, and nickel. Piping and appurtenances for undiluted diborane must be designed by experienced engineers and safety and fire protection specialists. Saran, polyethylene, Kel-F, Teflon, graphite, and high-vacuum silicone grease are satisfactory for use with diborane.
  In addition to the ability of a material to withstand chemical attack, the evaluation of materials compatibility with diborane should also emphasize the effect of the material on diborane stability (as expressed by the decomposition rate). The use of the following materials is not recommended:
  ? Metal oxides
  ? Natural rubbers
  ? Neoprene
  ? Leak-lock
  ? Permatex
  ? Ordinary oil and grease
  ? Nordel 1145 RPT elastomer, unfilled and Si02-filled
  ? silicon elastomer, unfilled and SiOrfilled
  ? CIS-4 polybutadiene elastomer, unfilled and SiOrfilled

• 職業ばく露

  Diborane is used as the source of boron in the semiconductor industry; as a catalyst for olefin polymerization; a rubber vulcanizer; a reducing agent; a flame-speed accelerator; a chemical intermediate for other boron hydrides; as a doping agent; in rocket propel- lants, and in the conversion of olefins to trialkyl boranes and primary alcohols.

• 貯蔵

  diborane should be used only in a fume hood free of ignition sources and should be stored in a cold, dry, wellventilated area separated from incompatible substances and isolated from sources of sparks and open flames.

• 輸送方法

  UN1911 Diborane, Hazard Class: 2.3; Labels: 2.3-Poisonous gas, 2.1-Flammable gas Inhalation Hazard Zone A. Cylinders must be transported in a secure upright position, in a well-ventilated truck. Protect cylinder and labels from physical damage. The owner of the compressed gas cylinder is the only entity allowed by federal law (49CFR) to transport and refill them. It is a violation of transportation regulations to refill compressed gas cylinders without the express written permission of the owner.

• 合成方法

  SchlesingerとBrownの発生法

• 不和合性

  A strong reducing agent. Unstable above 8 C. The presence of contaminants may lower the autoigni- tion temperature; ignition may take place at, or below, room temperature. Diborane can polymerize, forming liquid pentaborane (See P:0190). It ignites spontaneously in moist air; and on contact with water, hydrolyzes exothermically forming hydrogen and boric acid. Contact with halogenated compounds (including fire extinguishers) may cause fire and explosion. Contact with aluminum, lithium and other active metals form hydrides which may ignite spontane- ously. Incompatible with aluminum, carbon tetrachloride; nitric acid; nitrogen trifluoride and many other chemicals. Reacts with oxidized surfaces. Attacks some plastics, rubber or coatings.

• 廃棄物の処理

  Return refillable compressed gas cylinders to supplier. Incineration with aqueous scrub- bing of exhaust gases to remove B2O3 particulates.

ジボラン 上流と下流の製品情報

ジボラン スペクトルデータ(ESR)

19287-45-7, ジボラン キーワード