Dicyclohexylamine

Usage

Dicyclohexylamine is mainly used in the fields of synthetic rubber accelerators, metal corrosion inhibitors, surfactants, oilfield chemicals, medicines and pesticides. With the advancement of science and technology, its new applications are constantly being developed, and the fine chemicals that have been successfully synthesized are mainly new products with development prospects.

preparation

The hydrorefining reactor is a tubular fixed-bed reactor with an inner diameter of 20 mm. The catalyst is a nickel-based high-activity catalyst with a fixed volume of 15 mL. The catalyst is installed in the isothermal zone of the reactor. The particle size is 20 mesh to 40 mesh. The mass ratio of each metal element in the catalyst is: Ni:Al:Mo=85:5: 5. Crude dicyclohexylamine and hydrogen are introduced from the upper part of the reactor to perform a hydrorefining reaction. The products are continuously collected and analyzed from the lower end of the reactor. The hydrogen after gas-liquid separation is recovered and reused. The composition (weight percentage) of crude dicyclohexylamine in Chemicalbook is 10.15% cyclohexylamine, 5.11% aniline, 79.91% dicyclohexylamine, 0.31% dicyclohexyleneamine, 0.1% cyclohexylaniline, and 1.88% cyclohexeneaniline. %. Reaction conditions: 180°C, 3.5MPa, liquid volume space velocity 0.2h-1, hydrogen to oil ratio 1000. Product distribution after hydrorefining: cyclohexylamine 5.76%, aniline 0%, dicyclohexylamine 93.03%, dicyclohexyleneamine 0%, cyclohexylaniline 0.01%, cyclohexeneaniline 0%.

Chemical Properties

Colorless and transparent oily liquid with pungent ammonia smell. Slightly soluble in water, miscible with organic solvents.

Production method:

Using aniline as raw material, hydrogenation at high temperature and high pressure in the presence of a catalyst is used to prepare dicyclohexylamine.

Dicyclohexylamine Chemical Properties

CAS No. 101-83-7

Molecular formula C12H23N

Molecular weight 181.32

EINECS No. 202-980-7

Melting point -2 °C

Boiling point 256 °C

Density 0.912 g/mL at 20 °C (lit.)

Vapor density 6 (vs air)

Vapor pressure 12 mm Hg (37.7 °C)

Refractive index n20/D 1.4842 (lit.)

Flash Point 205°F

Contact Information

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