Stopflame® ZHS 

Zinc hydroxy stannate is used as a non-toxic flame retardant and fume suppressant. It has a fine particle size.
It is an effective flame retardant for halogenated polymers, particularly PVC, acting in the condensation phase as a carbon formator. STOPFLAME ZHS is also a synergistic fire retardant, antimony trioxide replacement agent in flexible PVC and halogenated polyesters.
Main uses:
•Flame retardant in PVC
•Replacement of antimony trioxide in different applications