N-Methyl-2-pyrrolidinone(NMP) Cas:872-50-4
N- methylpyrrolidone, colorless and transparent oily liquid with slight amine smell. Soluble with water, alcohol, ether, ester, ketone, halogenated hydrocarbon, aromatic hydrocarbon and castor oil. Low volatility, good thermal stability and chemical stability, and can evaporate with water vapor. Have hygroscopicity. Sensitive to light.
N- methylpyrrolidone is widely used in lithium battery, medicine, pesticide, pigment, cleaning agent, insulating material and other industries.
1. Chinese name: N- methyl pyrrolidone
2. English name: N-Methyl pyrrolidone
3. Chinese alias: NMP; 1- methyl -2-pyrrolidone; N- methyl -2- pyrrolidone
4、CAS No :872-50-4
5. Sub-formula: C5H9NO
6. Product description: Colorless oily liquid with slight amine smell. Soluble with water, alcohol, ether, ester, ketone, halogenated hydrocarbon, aromatic hydrocarbon and castor oil. Low volatility, good thermal stability and chemical stability, and can evaporate with water vapor. Have hygroscopicity. Sensitive to light.
The median lethal dose (rat, oral) was 3.8mg/kg.
Density: 1.028
Melting point:-24 c
Boiling point: 203℃, 81-82 °C/10 mmHg
Flash point: 91 °C
Refractive index n20/D:1.47
Toxic protection
Slight irritation to skin, but no absorption. Because of the low steam pressure, the risk of one inhalation is very small. However, chronic effects can cause dysfunction of the central nervous system, causing diseases of respiratory organs, kidneys and vascular systems. Mice inhaled this product vapor for 2 hours at a concentration of 0.18~0.20mg/L, which may cause slight irritation to upper respiratory tract and eyes. The LD50 of mice and rats was 5200 mg/kg and 7900mg/kg respectively. The maximum allowable concentration in the workplace is 100mg/m3. On-site operators should wear masks, protective glasses and gloves.
Packaging, storage and transportation This product is inactive in chemical properties and has no corrosion to other metals such as carbon steel and aluminum except copper. It is packed in galvanized iron drums, 50kg or 100kg per drum, and small packages are packed in glass bottles to avoid light. Store and transport according to general chemical regulations.
