DIHYDROTERPINEOL CAS 498-81-7

DIHYDROTERPINEOL possesses a sophisticated lavender scent with lasting fragrance and secure structure. Its scent continues to be the same even at temperature levels approximately 200 ° C, making it a high-performance resources for mixing lilac fragrances. It can be utilized at as much as 20% in soaps and artificial detergent scents. 

Compared to terpineol, DIHYDROTERPINEOL has a stronger woody fragrance, making it appropriate for adding fragrance to heavy-duty cleaning agents. Its secure performance permits widespread usage in the formula of day-to-day chemical fragrances. In addition, DIHYDROTERPINEOL is an outstanding solvent for the anthraquinone process in the manufacturing of hydrogen peroxide.

Preparation.

The terpineol and titanium salt-modified Raney nickel stimulant were put in a high-pressure reactor. The quantity of driver made use of was 1.5%– 6% of the mass of terpineol. The preparation method of the titanium salt-modified Raney nickel catalyst was as complies with: a nickel-aluminum alloy with a nickel mass portion of 40%– 65% was crushed to 60– 120 mesh. The shattered alloy was after that mixed in a 20%– 35% sodium hydroxide remedy at 40– 80 ° C for 1– 2 hours. After cleaning with deionized water, Raney nickel was obtained.T

he Raney nickel was then customized with a titanium salt remedy. Finally, after washing with deionized water and anhydrous ethanol respectively, the Raney nickel was saved in anhydrous ethanol. The method for customizing Raney nickel with titanium salt solution was as follows: Raney nickel was submersed in a 1– 10 g/L titanium salt liquid remedy at 40– 60 ° C for 24– 48 h.

The high-pressure activator was left to 1– 3 kPa for 10– 30 min, then hydrogen gas was introduced right into the activator, preserving the stress at 1.2 MPa for 5– 10 minutes.

The stress gauge reading of the high-pressure activator was observed. If the stress maintained at 1.2 MPa … When the pressure reaches 2.5-3.5 MPa, indicating no hydrogen leakage, increase the activator temperature to 75-95 ° C and the stress to 2.5-3.5 MPa. Maintain the mixing speed at 150-300 r/min and allow the hydrogenation response to continue for 3-5 hours.

Once the pressure inside the high-pressure activator stabilizes at a point between 2.5 and 3.5 MPa, the hydrogenation response is full. Now, lower the temperature level of the material inside the reactor to space temperature, open the air vent shutoff, and minimize the pressure inside the activator to atmospheric pressure. After the response item has actually cleared up and divided into layers, use nitrogen to force out the product. After a second settling and rainfall, filter to acquire DIHYDROTERPINEOL, with a selectivity above 98% and a yield of 98.0% -98.6%.