Oleic acid epoxid 1 is produced by reaction with 9S-hydroperoxy-10-cis
-12-trans-otadecadienoic acid 2 (9S-linoleic acid hydroperoxid, 9S-LOO
H) slowly at room temperature. 9S-LOOH is obtained in a slow reaction,
if linoleic acid is kept at room temperature in the air. Thus oleic a
cid of technical quality which contains always 10-30 % of linoleic aci
d is transformed slowly even at room temperature (via oxidation of lin
oleic acid to its hydroperoxide) into oleic acid epoxide.