α-PYR

α- Pyrrolidone, also known as 2-pyrrolidone, for short α-PYR, CAS #616-45-5, molecular formula c4h7no, structural formula, molecular weight 85.11, colorless or light yellow liquid or crystal, melting point 24.6 ℃, boiling point 245 ℃ (atmospheric pressure), flash point 129 ℃. It is an important fine chemical intermediate. It is widely used as solvent, organic synthesis intermediate and pharmaceutical intermediate. It is also used to manufacture nylon-4 and vinyl pyrrolidone.

Product executive standard: Q / pmq001-2014; The product quality specifications are as follows:

Items	Idex
Items	Medical grade	Industry level	General level
Purity / (wt%) ≥	99.5	99	98.5
Moisture / (wt%) ≤	0.1	0.2
Chromaticity (Hazen) ≤	15	20	30
Density (D425)	1.110～1.116
Refractive index (nd25)	1.482～1.486

Properties

Pyrrolidin-2-one is the simplest member of the class of pyrrolidin-2-ones, consisting of pyrrolidine in which the hydrogens at position 2 are replaced by an oxo group. The lactam arising by the formal intramolecular condensation of the amino and carboxy groups of gamma-aminobutyric acid (GABA). It has a role as a polar solvent and a metabolite.This product is mainly used as solvent and organic synthesis intermediate. It can be used to manufacture nylon-4 and vinyl pyrrolidone.

CAS No.

616-45-5

Formula

C4H7NO

Molecular Mass

85.10450

Exact Mass

85.05280

PSA

29.10000

Logp

0.22520