Service Hotline:13525296081
Industry
Current location: Home > Industry >

Properties and stability of N-methylpyrrolidone

Time:2021-05-20 Source: Yuyuan chemical Click:165

1. Colorless liquid, with ammonia smell, low toxicity. It is miscible with water and soluble in most organic solvents such as ether and acetone. It can dissolve most organic and inorganic compounds, polar gases, natural and synthetic polymer compounds.
2. Chemical properties: stable in neutral solution. After 8 hours in 4% NaOH solution, 50% ~ 70% of them hydrolyzed. In concentrated hydrochloric acid, 4-methylaminobutyric acid was gradually hydrolyzed to form 4-methylaminobutyric acid. Ketal or thiopyrrolidone can be formed by carbonyl reaction
3. In the presence of alkali catalyst, alkylation occurs at the third position. N-methylpyrrolidone is weakly basic and can form hydrochloride. It forms adduct with heavy metal salt, for example, it is heated to 150 ℃ with nickel bromide to form nibr2 (c5h9on) 3 with melting point of 105 ℃.
老司机午夜福利av无码特黄a_亚洲欧美波霸爆乳a片_老妇肥熟凸凹丰满刺激_一女被五六个黑人玩坏视频