Octoxynol 9 (or 10) typically contain traces of the toxins ethylene oxide, dioxane, C9 phenols, or glycol ether.

Detergents and emulsifiers promote tumors and cause cells to leak or explode by weakening their walls, with no mechanism for regulating destructive activity.  Detergents are used extensively in cell research precisely because of their ability to break cells open for further analysis.  This catastrophically mimics the membrane attack complex (MAC).
http://www.sailhome.org/Concerns/Vaccines/MAC.html