N-Vinylcaprolactam

N-Vinylcaprolactam Property

Melting point:

35-38 °C (dec.) (lit.)

Boiling point:

128 °C/21 mmHg (lit.)

Density 

1.029 g/mL at 25 °C (lit.)

vapor pressure 

3Pa at 20℃

refractive index 

1.

Flash point:

214 °F

storage temp. 

2-8°C

form 

powder to lump to clear liquid

pka

-0.91±0.20(Predicted)

color 

White or Colorless to Light orange to Yellow

Odor

Faint specific odor

Water Solubility 

Soluble in water (partly).

FreezingPoint 

34

Stability:

Stable. Combustible. Incompatible with strong oxidizing agents.

InChIKey

JWYVGKFDLWWQJX-UHFFFAOYSA-N

LogP

1.2 at 25℃

CAS DataBase Reference

2235-00-9(CAS DataBase Reference)

EPA Substance Registry System

2H-Azepin-2-one, 1-ethenylhexahydro- (2235-00-9)

Safety

Hazard Codes 

Xn

Risk Statements 

22-41-36/37/38

Safety Statements 

26-39-36

WGK Germany 

3

TSCA 

Yes

HS Code 

29337900

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H317May cause an allergic skin reaction

H319Causes serious eye irritation

H372Causes damage to organs through prolonged or repeated exposure

Precautionary statements

P280Wear protective gloves/protective clothing/eye protection/face protection.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P314Get medical advice/attention if you feel unwell.

N-Vinylcaprolactam Chemical Properties,Usage,Production

Chemical Properties

N-Vinylcaprolactam is a pale yellow crystalline solid. It is a versatile reactive diluent for free radical radiation curable coatings, inks, and adhesives which are used on a wide variety of substrates such as flooring, paper, plastics and more.

Uses

N-Vinyl-e-caprolactam (cas# 2235-00-9) is a compound useful in organic synthesis.

benefits

N-Vinylcaprolactam serves as a diluent when coating plastics, as it softens the surface thereby aiding adhesion of the cured film. The monomer N-Vinyl caprolactam provides fast curing and low viscosity and is relatively safe in radiation curable ink. Commercial uses of this chemical have also been reported to include use as a kinetic inhibitor for natural gas hydrates when integrated as a polymer.

General Description

N-Vinylcaprolactam (NVCL) is an organo-soluble amphiphilic material that is soluble in solvents like benzene, isobutanol, and isopropanol. It can be used in the preparation of poly(NVCL) by free-radical polymerization at a temperature higher than its melting point.

Flammability and Explosibility

Non flammable

Safety Profile

The acute oral LD50 of vinylcaprolactam was determined to be 1114mg/kg in rats. The acute oral LD50 was determined to be 1236mg/kg in male rats and 1049mg/kg in female rats.

Potential Exposure

Consumer: N-vinylcaprolactam is used as a reactive diluent for UV-coatings, -inks and -adhesives as well as a building block for synthesis of paper coatings and will be almost exclusively incorporated into the polymer matrix within consumer products. Therefore, due to the extremely low levels of residual monomer present in consumer products, exposure and subsequent risk is unlikely.
Worker: In industrial settings, N-vinylcaprolactam is manufactured and handled primarily in closed processes which limit exposure. Based on good manufacturing processes and industrial hygiene the occupational health risk associated with N-vinylcaprolactam is low.
Environmental Exposures: N-vinylcaprolactam is inherently biodegradable and has low potential for bioaccumulation. It is soluble in water and has low potential for volatilization. Based on its physical and chemical properties, if n-vinyl caprolactam was released into the environment, it is expected to partition between water and soil. Volatilization from water surfaces is not expected.

Purification Methods

Distil it under vacuum and with 0.0015% of 4-tert-butylcatechol as stabilizer. [Beilstein 21 III/IV 3207.]