Perlite

One source stated "Perlite is insoluble, stable, and inert with no known effects of exposure; can be treated as an innocuous dust. Perlite is partially soluble in hydroflouric acid".

However Perlite creates an exceedingly fine dust composed of volcanic glass particles, anyone that has worked with it can testify to this. The hazards thus need to be investigated more thoroughly.

Out Bound Links

• (URLs) Perlite at Wikipedia
  http://en.wikipedia.org/wiki/Perlite

In Bound Links

• (Materials) Perlite - Expanded volcanic glass