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Caprolactam

Caprolactam (CPL) is an organic compound with the formula (CH2)5C(O)NH. This colourless solid is a lactam (a cyclic amide) of caproic acid. Global demand for this compound is approximately 5 million tons per year, and the vast majority is used to make Nylon 6 filament, fiber, and plastics.

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Further Information

Names

IUPAC nameAzepan-2-one

Systematic IUPAC nameHexano-6-lactam

Other names

ε-Caprolactam
1-Aza-2-cycloheptanone
2-Azacycloheptanone
Capron PK4
Cyclohexanone iso-oxime
Extrom 6N
Hexahydro-2-azepinone
Hexahydro-2H-azepin-2-one (9CI)
Hexanolactam
Aminocaproic lactam

Identifiers

CAS Number: 105-60-2

JSmol: Interactive image

ChEBI: CHEBI:28579

ChEMBL: ChEMBL276218

ChemSpider: 7480

ECHA InfoCard: 100.003.013

EC Number: 203-313-2

KEGG: C06593

PubChem: 7768

UNII: 6879X594Z8

Properties

Chemical formula: C6H11NO

Molar mass: 113.16 g·mol

Appearance: White solid

Density: 1.01 g/cm

Melting point: 69.2 °C (156.6 °F; 342.3 K)

Boiling point: 270.8 °C (519.4 °F; 544.0 K) at 1013.25 hPa

Solubility in water: 866.89 g/L (22 °C)

Vapor pressure: 0.00000008 mmHg (20° C)

Hazards

R-phrases: R20 R22 R36/37/38

Flash point: 125 °C (257 °F; 398 K)

Explosive limits: 1.4%-8.0%

NIOSH

PEL: none

Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).