Addition of Watresich powder on to water soluble material like sugar cubes will make the sugar cubes insoluble or water resistant for a relatively high amount of time (days).

Thus Watresich powder makes water resistant materials.

It has got its most important use in ANFO.

ANFO and the water resistant ANFO (WRANFO) look something like:

The following relevant documents are prepared for the Watresich powder.

Sl. No. Document Link
01 Technical Specification for Watresich spec.watresich
02 Safety Data Sheet for Watresich sds. watresich
03 SOP for Watresich sop. watresich