Benzoyl peroxide, when dry, can, under certain circumstances, be an
explosive solid. That is why it is supplied "wet". If we describe it as a
"paste", then customers who receive what looks more like a "powder" become
concerned and worried. If we describe it as a powder, then we have other
customers expressing various safety concerns about the material they have
received. In the UK, they use the term "damped" to describe a material in this kind of state.
The product supplied by SPI Supplies contains 25% water but to the eyes of
most, it really does appear to be more like a powder than a paste. When it
really shakes like a dry powder, however, we add a little water so it is
taken to the "damped" state.
Before the product is shipped from SPI Supplies, it is given a final
inspection. Should it sit on your laboratory shelf for some time, and you
have concerns, let us know
and we will try our best to put your mind at ease.