N-Octyl pyrrolidone
CAS No. 2687-94-7
Molecular Formula: C12H23NO
Molecular Weight: 197.32
EINECS No. 403-700-8
Melting Point: -25°C (lit.) |
Boiling Point: 170–172°C at 15 mmHg (lit.)
| Density: 0.92 g/mL at 25°C (lit.) |
Vapor Pressure: 0.03–0.08 Pa at 20°C |
Refractive Index: n20/D 1.465 (lit.) |
Flash Point: >230°F |
Storage Conditions: Sealed in a dry place at room temperature |
Acidity Coefficient (pKa): -0.42 ± 0.20 (Predicted)
| Form: Clear liquid
| Color: Colorless to yellow
| Specific Gravity: 0.92
N-Octylpyrrolidone (NOP) is a highly efficient and selective solvent applicable to the recovery of organic raw materials, the refining of lubricating oils, and as a solvent for polymers and polymerization reactions. It also finds extensive application in the synthesis of fine chemicals, such as pharmaceuticals, pesticides, pigments, fragrances, and cleaning agents.
Chemical Properties: A colorless, pure liquid. Uses: A highly efficient, safe, and non-toxic skin penetrant and absorption enhancer; also serves as a surfactant and a solvent for organic synthesis.
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Post time: Mar-25-2026





