A second quantity of a solvent such as methanol and dried poly(ethylene oxide) can then be added slowly, alternating between small additions of liquid and dry materials, shaking vigorously between each combination. Next a salt such as a LiClCO4 salt can be added and the composition shaken ...
Diphenyl methane & diphenyl toluene are useful drug & pesticide intermediates, the reaction which uses the conventional AlCl3 as the catalyst has several pollution problems & the reaction proceeds vigorously and is dangerous. Chemicals: Aluminium chloride and ferric chloride were obtained from s.d. ...
General Preparation of Carbamates A solution of the chloroformate of Example 4 (1 equivalent) in acetone (2 mL/mmol) is added dropwise to a vigorously stirred mixture of BNH2 (1 equivalent) and NaHCO3 (2 equivalents) in water (2 mL/mmol). After 30 minutes, carbamates which precipitate ...
Procedure: The coating solution is prepared by adding HP 55S to ethanol and acetone stirring vigorously in a large beaker. The mixture is allowed to stir until the HP 55S has gone into solution completely. Triethyl Citrate is then added and stirred further to obtain the final solution used ...
The reaction was diluted with water (6500 mL) and stirred vigorously for 1 h to give a precipitate. The solids were collected and washed with water and dried to give the product as a dark brown solid 134 g. The solid was suspended in ethyl acetate (2500 mL) and heated to 75° C. ...
if tin dioxide powder and aluminium trichloride vapour are mixed vigorously at 1,100° K., tin tetrachloride vapour and aluminium oxide powder are formed according to the following equations: 3SnO2(s)+4AlCl3(g)=3SnCl4(g)+2Al2O3(s) 3SnO2(s)+2Al2Cl6(g)=3SnCl4(g)+2Al2O3(s) ...
This sample is then added to 100 mL distilled water at 40 °C and vigorously soaked for 20 s, after which it is placed in an electric oven at 40 °C for four days. After, it is filtered under vacuum conditions and then analyzed via titration to quantify both [OH]− and [Ca]2+ ...