4753 Isobutylene-isoprene copolymer Isobutylene-isoprene copolymer is used as a food additive [EAFUS] ("EAFUS: Everything Added to Food in the United States. [http://www.eafus.com/]"). Isobutylene-isoprene copolymer belongs to the family of Hemiterpenes. These are terpenes containing only one isoprene unit (C5-terpene). 9010-85-9 62703 C9H16 124.22 White powder. No indication of carcinogenicity to humans (not listed by IARC). 2014-09-11T02:05:28Z 2026-04-17T18:26:23Z true CC(C)=C.CC(=C)C=C C9H16 InChI=1S/C5H8.C4H8/c1-4-5(2)3;1-4(2)3/h4H,1-2H2,3H3;1H2,2-3H3 VHOQXEIFYTTXJU-UHFFFAOYSA-N 124.2233 124.125200512 Exogenous Solid HMDB32344 56450 CHEM003656 0 24.5764 8.5765817381686 1 0 0 0 0