Diepoxybutane

Diepoxybutane (also known as butane diepoxide, butadiene diepoxide, or 1,2:3,4-diepoxybutane) is a chemical compound with two epoxide functional groups. It is used as a chemical intermediate, as a curing agent for polymers, as a cross-linking agent for textiles, and as a preservative.
Diepoxybutane is a carcinogen.