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2-Pyrrolidone is produced industrially almost exclusively by treating aqueous gamma-butyrolactone with ammonia at a temperature of 250–290 °C and pressures ranging from 0.4–1.4 MPa over solid magnesium silicate catalysts. [3] The reaction is carried out in a tubular reactor which is packed with the solid catalyst. The latter is arranged as ...
N-Vinylpyrrolidone (NVP) is an organic compound consisting of a 5-membered lactam ring linked to a (2 carbon) vinyl group. It is a colorless liquid although commercial samples can appear yellowish. It is produced industrially by vinylation of 2-pyrrolidone, i.e. the base-catalyzed reaction with acetylene. [2]
Polyvinylpyrrolidone (PVP), also commonly called polyvidone or povidone, is a water-soluble polymer compound made from the monomer N-vinylpyrrolidone. [1] PVP is available in a range of molecular weights and related viscosities, and can be selected according to the desired application properties.
Among the most important representatives of the pyrrolidine alkaloids are hygrin and cuscohygrin. [2] Another representative is the (-)- codonopsinine . [ 3 ] Furthermore, ruspolinone , norruspolinone and norruspoline also belong to this alkaloid group.
Pyrrolidine, also known as tetrahydropyrrole, is an organic compound with the molecular formula (CH 2) 4 NH. It is a cyclic secondary amine , also classified as a saturated heterocycle . It is a colourless liquid that is miscible with water and most organic solvents.
Keira Knightley is still stopped in the streets and reminded of her greatest rom-com moment.. On Friday, Nov. 29, the actress revealed she recently came face-to-face with a group of construction ...
N-Methyl-2-pyrrolidone (NMP) is classified as a reproductive toxicant (H360D: May damage the unborn child) and can cause skin and eye irritation and respiratory irritation (H315, H319, H335). [5] Studies show NMP exposure can increase the risk of developmental toxicity, including miscarriage and fetal death. [ 6 ]
Incomplete Potty Training. At the age of 3 months, puppies are still considered the equivalent of infants. Consider that their small bodies and minds are in the process of developing.