1-ビニル-2-ピロリドン 化学特性,用途語,生産方法
外観
白色/無色~うすい黄色~赤色粉末~塊~透明液体
溶解性
水及びエタノールに極めて溶けやすい。水、エタノール、酢酸エチル、塩化メチレン、エーテルに易溶。
用途
1)ポリビニルピロリドン製造用 2)他のビニル化合物との共重合用原料
用途
結合剤、反応性希釈剤、ポリマー原料 (医薬、化粧品、工業用) (化学工業日報社)
化学的特性
Colorless liquid. Combustible.
使用
A pyrrolidine used for biochemical research
一般的な説明
1-Vinyl-2-pyrrolidinone is a colorless to yellow liquid, with a characteristic odor. Its melting point is around 13.5
oC and boils at about 90-92
oC. VP is completely miscible in water and in most organic solvents but partially miscible in aliphatic hydrocarbons. Industrial production of VP by reacting 2-pyrrolidone with acetylene at high pressure and temperature has been reported. The vinylation process proceeds in liquid phase and is catalyzed by 3-pyrrolidone -potassium hydroxide.
化学反応性
N-Vinyl-2-pyrrolidone (NVP) is stable toward alkalis at room temperature. Above 0 ℃ it is cleaved by aqueous mineral acids into acetaldehyde and 2-pyrrolidone; the latter reacts with an excess of NVP to give 1,1'-ethylidene-bis-2- pyrrolidone. Protic compounds such as amides, thiols, alcohols, and phenols add to the double bond according to the Markovnikov rule, for example, N-(1-phenoxyethyl)-2-pyrrolidone is formed with phenol. Catalytic hydrogenation produces N-ethyl-2-pyrrolidone. Hydroformylation on rhodium catalysts forms 2-N-(2-pyrrolidonyl)-propanal as the major product. On prolonged standing, particularly in warm conditions, NVP tends to polymerize. Industrially, N-Vinyl-2-pyrrolidone (NVP) is converted into polyvinylpyrrolidone using radical initiators.
安全性プロファイル
Confirmed carcinogen.
Moderately toxic by ingestion, inhalation,
and skin contact. A severe eye irritant.
Probably irritating and narcotic in high
concentrations. Combustible when exposed
to heat or flame; can react vigorously with
oxibzing materials. To fight fire, use alcohol
foam, CO2, dry chemical. When heated to
decomposition it emits highly toxic fumes of
NOx.
1-ビニル-2-ピロリドン 上流と下流の製品情報
原材料
準備製品