The Hindenburg was filled with flammable hydrogen but recent research suggests that hydrogen was not the primary matrrial involved in its tragic demis

How did a paint made from powdered aluminum contribute to the disaster?

The paint that was used on the Hindenburg was coated with flecks of aluminum, which is a component of rocket fuel. The paint caught fire from an electric discharge, then ignited the hydrogen.

http://americanhistory.about.com/od/hindenburg/a/hindenburg_3.htm