N-Methylcaprolactam, CAS No. 2556-73-2

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2556-73-2

Catalog No. EBD53839

CAS 2556-73-2

Name N-Methylcaprolactam

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Basic Information

Synonyms: N-Methylcaprolactam 1-methylazepan-2-one Hexahydro-1-methyl-2H-azepin-2-one 1-methyl-2-azepanone 1-methyl-azepan-2-one(n-methyl-caprolactam) 1-methylcaprolactam 2h-azepin-2-one,hexahydro-n-methyl- epsilon-caprolactam,n-methyl- hexahydro-1-methyl-2h-azepin-2-on hexahydro-n-methyl-2h-azepin-2-on hexahydro-n-methyl-2h-azepin-2-one n-methyl-6-hexanelactam n-methyl-gamma-caprolactam

Molecular Formula: C7H13NO

Molecular Weight: 127.18

MDL Number: MFCD00003263

Categories: Materials Chemistry > Polymers and Macromolecular Materials > Polyamide and Nylon Precursors Synthetic Chemistry > Organic Building Blocks > Amines

Product Description:

N-Methylcaprolactam is a colorless to pale yellow liquid with the molecular formula C7H13NO. It is a derivative of ε-caprolactam, where the amide nitrogen is methylated. This structural modification significantly alters its physical and chemical properties compared to the parent compound. Its primary industrial application is as a high-boiling, polar aprotic solvent. It is particularly valued in the polymer industry for the synthesis and processing of high-performance polymers, including polyamides (nylons), polyimides, and aramid fibers. Its excellent solvating power, high thermal stability, and low volatility make it suitable for demanding processes such as high-temperature polymerizations and as a spinning solvent for synthetic fibers. It also finds use as a reaction medium in organic synthesis and as a plasticizer. N-Methylcaprolactam is also utilized as a chemical intermediate. It serves as a precursor or building block in organic synthesis, particularly for introducing the N-methylated lactam moiety into more complex molecules. Handling requires caution as it is hygroscopic and can cause irritation to the skin, eyes, and respiratory system.

Physical Properties

Boiling Point: 106-108 °C/6 mmHg(lit.)

Flash Point: 103 °C

Density: 0.991 g/mL at 25 °C(lit.)

Refractivity: n20/D 1.484(lit.)