Health & Environmental Research Online (HERO)


Print Feedback Export to File
5740623 
Journal Article 
Studies on the Thermal Decomposition of Phthalic Acid Esters. IV. Thermal Decomposition of Mono (2-ethylhexyl) phthalate 
Saido, K; Motohashi, S; Kuroki, T; Ikemura, T; Satomi, M; Kirisawa, M 
1979 
Yes 
Chemical and Pharmaceutical Bulletin
ISSN: 0009-2363
EISSN: 1347-5223 
27 
12 
3140 
The thermal behavior of mono (2-ethylhexyl) phthalate (monoester) was investigated in a batch system over the temperature range from 80 to 250°. After a 12 hr reaction period, around 7% of the monoester was decomposed at 80°. The decomposition reached 50% at 150°and 90% at 250°. The reaction products were bis (2-ethylhexyl) phthalate (BEHP ; 53% at 200°), 2-ethylhexanol and phthalic anhydride. The monoester reacted poorly with water, under-going hydrolysis only with difficulty. In addition, cis-elimination did not occur. The mechanism of the decomposition is discussed. 
Pharmacy And Pharmacology