THE WORLD POPULATION AND THE TOP TEN. COUNTRIES WITH THE HIGHEST POPULATION. The ten countries with the largest population in the world today. are China, India, United States, Indonesia, Brazil, Pakistan, Nigeria, Bangladesh, Russia and Mexico. TOP TEN COUNTRIES WITH THE HIGHEST POPULATION.
Ester Definition. An ester is an organic compound where the hydrogen in the compound's carboxyl group is replaced with a hydrocarbon group. Esters are derived from carboxylic acids and (usually) an alcohol. While carboxylic acid has the -COOH group, the hydrogen is replaced by a hydrocarbon in an ester.
Esters are a very common class of compound in nature â all oils and waxes are esters. An ester is a combination of an alcohol and an acid. Cetearyl ethylhexanoate (PurCellin Oil) is a synthetic ester, it is a combination of cetyl and stearyl alcohols with 2-ethylhexanoic acid.Duck preening oils are a complex mixture of many compounds that include a range of natural wax esters, though not cetearyl ethylhexanoate.sters are a very common class of compound in nature â all oils and waxes are esters. An ester is a combination of an alcohol and an acid. Cetearyl ethylhexanoate (PurCellin Oil) is a synthetic ester, it is a combination of cetyl and stearyl alcohols with 2-ethylhexanoic acid.