propenoic acid. C 3 H 4 O 2 (72.06). CH 2 =CHCOOH. Laboratory methods include saponification of acrylic esters, oxidation of acrylic aldehyde, dehydration of hydroxypropionic acid, and dehydrohalogenation of halopropionic acids, but the industrial synthesis method is as shown in the following formula. → CH2 =CHCOOH + H2O (Direct oxidation of propene) (Reppe method) A liquid with an unpleasant, pungent odor. Melting point 13 °C, boiling point 141 °C. Solubility 1.0511. 1.4224. Soluble in water. Very susceptible to polymerization, so hydroquinone is added as a polymerization inhibitor when stored. Copolymers with ethene and acrylonitrile are important acidic polymer electrolytes, and are also used as raw materials for aqueous polymers and various other organic syntheses. Alkyl ester polymers are widely used in paints and adhesives. Recently, crosslinked polyacrylic acid has been used as a superabsorbent resin in various fields such as diapers, sanitary products, agriculture, and the electronics industry. Irritating to the skin, mucous membranes, and eyes. LD 50 60 mg/kg (mouse, oral). [CAS 79-10-7] Source: Morikita Publishing "Chemical Dictionary (2nd Edition)" Information about the Chemical Dictionary 2nd Edition |
propenoic acid.C3H4O2(72.06).CH2=CHCOOH.実験室的には,アクリル酸エステルのけん化,アクリルアルデヒドの酸化,ヒドロキシプロピオン酸の脱水,およびハロプロピオン酸の脱ハロゲン化水素などの方法があるが,工業的には,次式に示すような合成法がある. → CH2=CHCOOH + H2O (プロペンの直接酸化法) (レッペ法) 不快な刺激臭をもつ液体.融点13 ℃,沸点141 ℃.1.0511.1.4224.水に可溶.非常に重合しやすいので重合防止剤としてヒドロキノンを加えて貯蔵する.エテンやアクリロニトリルとの共重合体は酸性高分子電解質として重要であり,また水溶液性高分子の原料,そのほか種々の有機合成の原料としても用いられる.アルキルエステルの重合体は,塗料,接着剤などに広く利用される.最近では,ポリアクリル酸を架橋したものが高吸水性樹脂として,おむつ,衛生用品,農業,電子産業などのさまざまな方面で利用されている.皮膚,粘膜,眼を刺激する.LD50 60 mg/kg(マウス,経口).[CAS 79-10-7] 出典 森北出版「化学辞典(第2版)」化学辞典 第2版について 情報 |
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