Hydrophobic Chalk MPGM

Hydrophobic Chalk mark MPGM TS 5743-020-05346453-2008.
Hydrophobic chalk is packed in 30-kg paper or propylene bags. 
Mass fraction of calcium carbonate and magnesium carbonate in terms of the equivalent amount of calcium carbonate is not less than 94.5 %, the mass fraction of moisture is not more than 0.5 %. Chalk is used as a filler in the production of pipes, panels of pvc, linoleum.