2,6-ジメチルフェノール 化学特性,用途語,生産方法
外観
白色〜うすい褐色, 結晶又は塊
溶解性
水に難溶, エタノール, エーテルに易溶。エタノール及びアセトンに極めて溶けやすく、水にほとんど溶けない。
用途
キシレノール (xylenol) は、フェノール類の一種で、フェノール(石炭酸)に二個のメチル基が置換した構造を持つ毒物である。
産業廃棄物の処理場付近の土壌検査で、有害物質として検査対象になっている。
化学的特性
colourless crystals or white powder. soluble in alcohol, ether, chloroform, benzene and alkali solution, slightly soluble in water.
天然物の起源
Reported found in smoked fatty fish, boiled and cooked cured pork, rum, malt whiskey, Japanese whiskey,
coffee, katsuobushi (dried bonito) and lamb’s lettuce (Valerianella locusta).
使用
Similar to other xylenol compounds, 2,6-dimethylphenol is used in the synthesis of anti-oxidant compounds due to the phenol moiety in the structure. In addition, this compound is used as a a reactant
in the synthesis of polyphenylene ether polymers.
主な応用
2,6-dimethylphenol is generally applied in industry as a monomer in polymerization reaction. For the production of polyphenylene ether resins, polyester and polyether resins.
製造方法
From coal tar oil or coal hydrogenation.
Synthesis of 2,6-dimethylphenol: The gas-phase catalytic reaction of phenol and methanol is carried out, and then purified by rectification, and the product purity can reach more than 99%.
Selective phenol methylation to 2,6-dimethylphenol in a fluidized bed of iron-chromium mixed oxide catalyst with o–cresol circulationCatalytic synthesis of 2,6-dimethylphenol from methanol and cyclohexanone over titanium oxide-supported vanadium oxide catalysts
一般的な説明
2,6-dimethylphenol is a colorless to off-white crystalline solid with a sweet tarry odor. Odor threshold concentration: 0.4 mg/L . (NTP, 1992)
空気と水の反応
Insoluble in water
反応プロフィール
2,6-Dimethylphenol is incompatible with bases, acid chlorides, acid anhydrides, and oxidizing agents. Corrodes steel, brass, copper, and copper alloys.
火災危険
2,6-Dimethylphenol is combustible.
純化方法
Fractionally distil 2,6-xylenol under nitrogen, crystallise it from *benzene or hexane, and sublime it at 38o/10mm. [Beilstein 6 IV 3122.]
2,6-ジメチルフェノール 上流と下流の製品情報
原材料
準備製品