テトラメチルすず 化学特性,用途語,生産方法
外観
無色～ほとんど無色透明液体
解説
アルキル，およびアリール誘導体の総称．多くのものが得られているが，一般にもとの水素化物より安定である．テトラメチルスタンナン(CH3)4Sn(178.85)は，ジブチルエーテル中でSnCl4とCH3MgIの反応(グリニャール反応)で得られる．無色の液体．沸点76.8 ℃．密度1.29 g cm－3．水に不溶，有機溶媒に可溶．Br2 と作用して(CH3)3BrSnになる．テトラフェニルスタンナン(C6H5)4Sn(427.13)は，同様にSnCl4とフェニルグリニャール試薬の反応で得られる．無色の結晶．融点229 ℃．ハロゲンと反応して(C6H5)4SnX2を，計算量のSnCl4と反応して(C6H5)3ClSnを生じる．
化学的特性
clear colorless liquid
使用
Tetramethyltin is used in many organic syntheticreactions.
定義
ChEBI: An organotin compound carrying four methyl groups.
健康ハザード
Tetramethyltin is moderately toxic by allroutes of exposure. The symptoms includeheadache, muscle weakness, and paralysis.Exposure limits:
TLV-TWA: 0.1 mg (Sn)/m
3 (skin) (ACGIH)
PEL-TWA: 0.1 mg (Sn)/m
3 (skin) (OSHA).
火災危険
The ease of oxidation, however, is low in
comparison with most other metal alkyls. It
is relatively stable to air and does not ignite spontaneously as other alkyls do. Also, it
is stable in water. The compound, however,
is highly flammable, the flash point being
( －13°C) 9°F (Aldrich 1996). It explodes
violently in contact with dinitrogen tetraoxide
even, at －80°C (－112°F) (Bailar 1973).
Reaction with strong oxidizers is expected to
be vigorous to violent.
安全性プロファイル
Moderately toxic by inhalation. A very dangerous fire and explosion hazard when exposed to heat, flame, or oxidizers. Powerful explosive reaction with dinitrogen tetroxide. To fight fire, use water, foam, CO2, dry chemical. When heated it emits acrid smoke and irritating fumes. See also TIN COMPOUNDS and ORGANOMETALS.
純化方法
It is purified by fractionation using a Todd column (p 11) of 35-40 plates at atmospheric pressure. The purity of the fractions can be followed by IR [Edgell & Ward J Am Chem Soc 77 6486 1955]. It readily dissolves stopcock silicone greases which give bands in the 8-10a region. [Edgell & Ward J Am Chem Soc 76 1169 1954, Beilstein 4 IV 4307.]
テトラメチルすず 上流と下流の製品情報
原材料
準備製品