1-vinylhexahydro-2 H -azepin-2-one

Structural formula
General
Surname	1-vinylhexahydro-2 H -azepin-2-one
other names	N- vinyl caprolactam
Molecular formula	C 8 H 13 NO
Brief description	yellowish solid with a faint odor
External identifiers / databases
EC number	218-787-6
ECHA InfoCard	100.017.080
PubChem	75227
Wikidata	Q15712394
properties
Molar mass	139.20 g mol −1
Physical state	firmly
density	1.01 g cm −3 (40 ° C)
Melting point	34 ° C
boiling point	113–116 ° C (13 hPa)
Vapor pressure	<0.1 hPa (20 ° C)
solubility	soluble in water (approx. 41 g l −1 at 25 ° C)
safety instructions
H and P phrases	H: 302 + 312-317-319-372
	P: 260-264-280-302 + 352 + 312-314-333 + 313
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

1-Vinylhexahydro-2 H -azepin-2-one is a chemical compound from the group of nitrogen heterocycles with a keto group .

Extraction and presentation

1-Vinylhexahydro-2 H -azepin-2-one can be prepared by reaction of acetylene with caprolactam with potassium hydroxide as catalyst and 18-crown-6-ether are obtained as a cocatalyst.

properties

1-Vinylhexahydro-2 H -azepin-2-one is a flammable, hardly inflammable, yellowish solid with a faint odor, which is soluble in water. Its aqueous solution has an alkaline reaction.

use

1-vinylhexahydro-2 H -azepin-2-one is used as a reactive diluent and is used in a wide range of UV-curing screen printing inks , for fiberglass layers and rapid prototyping, and in UV varnishes and adhesives . It also serves as a building block for the synthesis of paper coatings.

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j Entry on 1-vinylhexahydro-2H-azepin-2-one in the GESTIS substance database of the IFA , accessed on January 8, 2020(JavaScript required) .
↑ Shubo, Feng & Shuyuan, Li & Cunfeng, He & Erli, Zheng & Xinliang, Tang (2009): Synthesis of N-vinyl caprolactam. Catalysis Today 140.169-173, doi: 10.1016 / j.cattod.2008.10.014 .
↑ Data sheet N-Vinyl-epsilon-caprolactam, 99% from AlfaAesar, accessed on January 28, 2019 ( PDF )(JavaScript required) .

[GESTIS-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j Entry on 1-vinylhexahydro-2H-azepin-2-one in the GESTIS substance database of the IFA , accessed on January 8, 2020(JavaScript required) .

[10.1016/j.cattod.2008.10.014-2] Shubo, Feng & Shuyuan, Li & Cunfeng, He & Erli, Zheng & Xinliang, Tang (2009): Synthesis of N-vinyl caprolactam. Catalysis Today 140.169-173, doi: 10.1016 / j.cattod.2008.10.014 .

[Alfa-3] Data sheet N-Vinyl-epsilon-caprolactam, 99% from AlfaAesar, accessed on January 28, 2019 ( PDF )(JavaScript required) .