Chemical industry portal

epsilon-caprolactam solid

Product name epsilon-caprolactam solid
Synonyms 2-oxohexamethylenimine
caprolactam
GOST 7850-86
CAS 105-60-2

Caprolactam - colorless hygroscopic crystals, soluble in water, organic solvents and diluted sulfuric acid.
Caprolactam is typical lactam. Being heated with mineral acids forms salts; in presence af small amounts of water, alcohols or amines at 250-260 °C polymerizes into polyamide resin which is used for synthetic fibers production (nylon).

Commercial production

Industrial process use benzene as start material. Benzene hydrogenates to cyclohexane on Pt/Al2O3 or Ni/Cr catalysts at 250-350 or 130-220 °C respectively. Than cyclohexane by liquid phase oxidation converts into cyclohexanol at 140-160°C, 0.9-1.1 MPa in presence of cobalt naphthenate or stearate. Cyclohexanol dehydrogenates to cyclohexanone on Zn/Fe (400 °C) or Zn/Cr (360-400 °C) or Cu/Mg (260-300 °C) catalysts. Oxime forms after treatment with hydroxylamine sulfate water solution or ammonia at 0-100°C. Final stage of caprolactam synthesis is treatment of cyclohexanoxime with concentrated sulfuric acid at 60-120 °C (Beckmann rearrangement.)

Caprolactam is an irritant and is toxic by ingestion, inhalation, or absorption through the skin
Manufacturer(s) OJSC Grodno Azot
JSC Kuibyshevazot
JSC Shchekinoazot
Chemical structure of caprolactam

FIND PRODUCT
Find chemicals by name, GOST or CAS number

Russian version
Unauthorized copying, processing or reproduction of any and all information published on this website prohibited.
© 2000-2010 All rights reserved
Powered by CHEMINDUSTRY.RU group
Contact us