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Tel: 17734809689
Tel: 86-371-86259723
Tel: 17734809689
Tel: 17734809689
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Tel: +86-371- 86259723
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CAS NO.872-50-4
1.Certificate Of Analysis (COA)
2.Material Safety Data Sheet (MSDS)
3.Route of synthesis (ROS)
4.Method of Aanlysis(MOA)
5.Nuclear Magnetic Resonance(NMR)
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| 1-Methyl-2-pyrrolidinone Chemical Properties |
| mp | −24 °C(lit.) |
| bp | 202 °C(lit.) |
| density | 1.028 g/mL at 25 °C(lit.) |
| vapor density | 3.4 (vs air) |
| vapor pressure | 0.29 mm Hg ( 20 °C) |
| refractive index |
n |
| Fp | 187 °F |
| storage temp. | 2-8°C |
| color | ≤20(APHA) |
| Water Solubility | >=10 g/100 mL at 20 ºC |
| Sensitive | Hygroscopic |
| Merck | 14,6117 |
| BRN | 106420 |
| Stability: | Stable, but decomposes upon exposure to light. Combustible. Incompatible with strong oxidizing agents, strong acids, reducing agents, bases. |
| CAS DataBase Reference | 872-50-4(CAS DataBase Reference) |
| NIST Chemistry Reference | 2-Pyrrolidinone, 1-methyl-(872-50-4) |
| EPA Substance Registry System | 2-Pyrrolidinone, 1-methyl-(872-50-4) |
| Safety Information |
| Hazard Codes | T,Xi |
| Risk Statements | 45-65-36/38-36/37/38-61-10-46 |
| Safety Statements | 41-45-53-62-26 |
| WGK Germany | 1 |
| RTECS | UY5790000 |
| F | 3-8-10 |
| TSCA | Y |
| Hazardous Substances Data | 872-50-4(Hazardous Substances Data) |
| Chemical Properties | It is transparently colorless oily liquid, slight odor of amine . It can be miscible with water, alcohols, ethers, esters, ketones, halogenated hydrocarbons, aromatics. |
| Production methods | It is produced by the reaction of γ- butyrolactone with methylamine. The first step is that methylamine reacts with γ- butyrolactone to produce 4-hydroxy -N- methylbutanamide, and then the second step is further dehydration to produce 1-Methyl-2-pyrrolidinone. Two-step reaction can be conducted in a tubular reactor continuously, and the molar ratio of γ-butyrolactone to methylamine is 1: 1.15, pressure is about 6MPa and temperature is 250 ℃. After completion of the reaction, and then by concentration and vacuum distillation, product is derived. Yield is 90%. If the production is conducted in tank reactor, Dosage of methylamine is 1.5 to 2.5 times of the theoretical amount. For laboratory preparation, for example, 2 mols of γ- butyrolactone and 4 moles of liquid methylamine were added In 500ml autoclave vessel, heat sealed and held at 280 ℃ for 4h. After cooling, the release of excess methylamine, distillation, collecting 201-202 ℃ fraction, the product was about 180g, the yield of which was approximately 90%. Raw material consumption (kg / g) forγ- butyrolactone and methylamine (40%) were 980 and 860. |
| Category | Flammable liquid |
| Toxicity grading | poisoning |
| Acute toxicity | oral - rat LD50: 3914 mg / kg, Oral - Mouse LD50: 5130 mg / kg |
| Irritation data | Eye - rabbit moderate 100 mg |
| Flammability hazard characteristics | In case of fire, high temperature, strong oxidants, it is combustible. It is thermally decomposed to produce toxic nitric oxide gas. |
| Storage feature | complete package, wrapped and laid carefully, warehouse ventilation, away from open flame, heat, and stored separately from oxidants |
| Extinguishing agents | Foam, carbon dioxide, dry power, sandy soil |
| Chemical Properties | colourless or light yellow liquid with an amine odour |
| Usage | high purity grade for ICP-MS detection |
| Usage | It is a versatile industrial solvent. NMP is currently approved for use only in veterinary pharmaceuticals. The determination of the disposition and metabolism of NMP in the rat will contribute toward understanding the toxicology of this exogenous chemical which man may likely be exposed to in increasing amounts. |
| Professional standards | TWA 100 PPM (400 mg / cubic meter), STEL 100 mg / cubic meter |
| General Description | A clear colorless liquid with a "fishlike" odor. Denser than water. Flash point 199°F. Contact may irritate skin, eyes and mucous membranes. May be toxic by ingestion. |
| Air & Water Reactions | Soluble in water. |
| Reactivity Profile | This amine is a very mild chemical base. 1-Methyl-2-pyrrolidinone does tend to neutralize acids to form salts plus water. The amount of heat that is evolved per mole of amine in a neutralization is largely independent of the strength of the amine as a base. Amines may be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen is generated by amines in combination with strong reducing agents, such as hydrides. |
| Health Hazard | Inhalation of hot vapors can irritate nose and throat. Ingestion causes irritation of mouth and stomach. Contact with eyes causes irritation. Repeated and prolonged skin contact produces a mild, transient irritation. |
| Fire Hazard | Special Hazards of Combustion Products: Toxic oxides of nitrogen may be formed in fire. |
| 1-Methyl-2-pyrrolidinone Preparation Products And Raw materials |