Prepn: Davidson, Lusskin, US 3045047 (1962 to Trubek Lab.). GC determn in fragrances: H. H. Wisneski et al., J. Assoc. Off. Anal. Chem. 65, 598 (1982). Toxicity: K. R. Butterworth, P. L. Mason, Food Cosmet. Toxicol. 19, 753 (1981).