Name | 2-Pyrrolidinone |
Synonyms | 2-P α-P α-PVR 2-Pyrol Butyrolactam Α-pyrrolidone 2-Pyrrolidone 2-Pyrrolidinone 2-Oxopyrrolidine 2-KETOPYRROLIDINE ALPHA-PYRROLIDONE 2-AZACYCLOPENTANONE PIPERIDINIC ACID LACTAM 2-Pyrrolidone Butyrolactam |
CAS | 616-45-5 |
EINECS | 210-483-1 |
InChI | InChI=1/C4H7NO/c6-4-2-1-3-5-4/h1-3H2,(H,5,6) |
InChIKey | HNJBEVLQSNELDL-UHFFFAOYSA-N |
Molecular Formula | C4H7NO |
Molar Mass | 85.1 |
Density | 1.12 g/mL at 25 °C (lit.) |
Melting Point | 23-25 °C (lit.) |
Boling Point | 245 °C (lit.) |
Flash Point | >230°F |
Water Solubility | miscible |
Solubility | H2O: miscible (completely) |
Vapor Presure | 0.04 hPa (20 °C) |
Vapor Density | 2.9 (vs air) |
Appearance | Liquid or Low Melting Mass |
Color | Clear colorless to pale yellow |
Merck | 14,8016 |
BRN | 105241 |
pKa | 16.62±0.20(Predicted) |
PH | 9-11 (100g/l, H2O, 20℃) |
Storage Condition | 2-8°C |
Stability | Hygroscopic |
Sensitive | Hygroscopic |
Explosive Limit | 1.8-16.6%(V) |
Refractive Index | n20/D 1.487(lit.) |
Physical and Chemical Properties | Density 1.103 melting point 25.5°C boiling point 250°C refractive index 1.486-1.488 flash point 138°C water-soluble miscible |
Use | Used as raw materials and solvents for organic synthesis |
Risk Codes | 22 - Harmful if swallowed |
Safety Description | 24/25 - Avoid contact with skin and eyes. |
UN IDs | 2810 |
WGK Germany | 1 |
RTECS | UY5715000 |
TSCA | Yes |
HS Code | 29339980 |
Hazard Class | 6.1(b) |
Packing Group | III |
Toxicity | LD50 orally in Rabbit: > 3200 mg/kg |
Raw Materials | gamma-butyrolactone Ammonium hydroxide Ammonia |
Downstream Products | Piracetam |
colorless crystals (petroleum ether), above 25 °c as a liquid. The melting point of 23~25 deg C (24.6 deg C). Boiling point 245 ℃,133 ℃ (1. 6kPa). The relative density was 1. 120. Refractive index of 1. 4870, soluble in water and most organic solvents, difficult to dissolve in petroleum ether, the formation of monohydrate in humid air (boiling point 35 ℃). Chemical stability, non-corrosive. It is irritating to eyes, skin and mucous membranes.
intermediate of y-aminobutyric acid. It is a raw material for Organic Synthesis (Synthesis of polyvinylpyrrolidone, polypyrrolidone, nylon 4, etc.), and is also used as a high boiling point solvent, coalescent agent, plasticizer.