Strontium perchlorate
From Infogalactic: the planetary knowledge core
Strontium perchlorate is a white powder or colorless crystals with the formula Sr(ClO4)2. Its a strong oxidizer which gives red flames.It can be used in pyrotechnics,however,usually the more common strontium nitrate is used. It can be prepared by oxidizing strontium chlorate with hypochlorites.
Sr(ClO3)2(aq)+OCl−(aq)=Sr(ClO4)(aq)2+Cl−(aq)