N-Methyl pyrrolidinone / CAS 872-50-4

N-Methyl pyrrolidinone

CAS No：872-50-4

Molecular formula: C5H9NO

Density: 1.028g/cm3

Melting point: - 24 ℃

Flash point: 91 ℃

Refractive index n20/D: 1.47

Properties: colorless transparent oily liquid with slight smell of amine. It can be miscible with water, alcohol, ether, ester, ketone, halogenated hydrocarbon, aromatic hydrocarbon and castor oil. Low volatility, good thermal and chemical stability, and can volatilize with water vapor. Hygroscopic. Sensitive to light. It is a polar aprotic solvent with the advantages of low toxicity, high boiling point, outstanding solubility, strong selectivity and good stability.

Quality index:

Industrial grade

Electronic grade

Product purpose:

1. It is widely used in aromatics extraction, purification of acetylene, olefins and dienes, as well as polymer solvents and polymerization media, such as engineering plastics and aramid fibers. In addition, it can also be used in pesticide, medicine and detergent.

2. The main uses of NMP in petrochemical industry are as follows: (1) extraction and recovery of basic organic raw materials. It can be used as a solvent for recovering acetylene from natural gas or light naphtha pyrolysis gas, and the purity of recovered and concentrated acetylene can reach 99.7%; As an extractant for separating and recovering high-purity butadiene from cracked C4 hydrocarbon, the recovery rate is 97% and the purity of recovered butadiene is 99.7%; As an extractant for recovering high-purity isoprene from cracked C5 Hydrocarbons, the recovery purity of isoprene is up to 99%; When used as aromatics extractant, because it has high solubility and low vapor pressure to aromatics, the loss rate of extractant is low and the recovery rate of aromatics is high; (2) Lubricating oil refining. It is used to extract aromatics from lubricating oil to refine lubricating oil; (3) Used as a solvent for polymers and polymerization reactions. For example, the polymerization solvent for the production of polyphenylene sulfide and polymers such as aramid, polyimide, polyamide and polyurethane; (4) As a solvent for resin processing, it can be used to manufacture coatings, floor paints, varnishes, composite coating film-forming, integrated circuit enamelled wire insulation materials, fiber fabrics, adhesives and other products; (5) Industrial detergent, cleaning chemical equipment, blockages, attachments and coating layers; (6) Solvents and dispersants used in the production of pesticides and pigments.

3. The main uses of NMP in the electronic industry are as follows: (1) NMP is used as the solvent of polyvinylidene fluoride and the electrode auxiliary material of lithium-ion battery; (2) It can be used for photoresist removal liquid and LCD liquid crystal material production; (3) Solvents used in pharmaceutical production; (4) Cleaning of precision instruments and circuit boards in semiconductor industry.

Product packaging:

The chemical property of this product is not active. Except for copper, it has no corrosivity to other metals such as carbon steel and aluminum. It is packed in galvanized iron drums and stored and transported according to the provisions of general chemicals, with a net weight of 200kg / barrel. Isotank tank for bulk.

Storage and transportation conditions:

Store in a cool and ventilated warehouse, moisture-proof, away from fire and heat source, and separate from oxidant. Handle with care to keep the package intact and prevent leakage.