I believe 2-butoxyethanol causes the soft tissue sarcomas and many birth defects and brain tumors, from what I've been learning about it. 'gulf war syndrome' and CFIDS, too
I believe it has harmed people for nearly 75 years and it continues to go unnoticed.
How to tell its harm:
It is more probably the cause of the Vietnam vets' harm than dioxin is
SO,
A company will supply them for free and I have a doctor interested in the study