TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The rapeseed alkyl-ester composition comprises (based on total weight of mono-alkyl ester of fatty acids) mono-alkyl ester(s) of oleic acid (greater than 72%, preferably greater than 85%), and mono-alkyl ester(s) of linolenic acid (less than 4%, preferably less than 1%). The mono-alkyl esters of saturated fatty acids comprise less 4.5% or 3.5% alkyl ester(s) of palmitic acid. The composition may contain less than 15% (preferably less than 8%) mono-alkyl ester(s) of linoleic acid or less than 20% (preferably less than 16%) mono-alkyl ester(s) of polyunsaturated fatty acids. The rapeseed oil comprises (based on total weight of fatty acids) oleic acid (greater than 72%, preferably greater than 85%), and/or linolenic acid (less than 4%, preferably less than 1%). The saturated fatty acids comprise less than 4.5% or 3.5% palmitic acid.Preferred Components: The mono-alkyl ester is methyl ester or ethyl ester.Preferred Process: The transesterification is conducted by base-catalyzed methanolyze of rapeseed oil or direct acid-catalyzed methanolyze of rapeseed oil. The methanolyze step includes conversion of rapeseed oil to its fatty acids, and conversion of fatty acids to methyl esters of fatty acids. The process includes, before transesterification step, degumming crude rapeseed oil, refining the resulting oil, and bleaching the rapeseed oil. The rapeseed oil is extracted from 1-6 varieties selected from CONTACT variety, CABRIOLET variety, CALIDA variety, MSP05 variety, MSP11 variety, or MSP13 variety. EXAMPLE - Oil ( approximately 2000 g, extracted from rapeseed of CONTACT variety, degummed, and refined) was mixed with methanol (300 g) in a reaction vessel. Sodium hydroxide (5-10 g) was added to the vessel. Methanolyze occurred for 2 hours at approximately 40-60degreesC under atmospheric pressure. After settling, the two phases of reaction mixture were allowed to stand and separate to provide methyl esters in the upper phase, and a mixture of glycerol and approximately 2 wt.% residual methyl esters, methanol and base in the lower phase. Methanol (300 g) and sodium hydroxide (5-10 g) were added to the vessel containing the upper phase. Methanolyze occurred for 2 hours at approximately 40-60degreesC under atmospheric pressure. The fatty acid methyl esters were washed and dried. Fatty acid methyl esters with a purity of greater than 98% were obtained. The mass yield (methyl esters/refined oil) was good. The methyl esters contained palmitic (4%), palmitoleic (0.25%), stearic (1.69%), oleic (72.95%), linoleic (9.15%), alpha-linolenic (9.6%), arachidic (0.61%), eicosenoic (1.05%), behenic (0.63%), and erucic (0.07%).