Strontium chloride

Strontium chloride (SrCl2), also known as strontium dichloride, is an inorganic salt formed from strontium and chlorine. It carries CAS number 10476-85-4 and EC number 233-971-6. No E-code designation applies to this substance.

In pharmaceutical formulations, strontium chloride acts as an active ingredient in desensitising toothpastes by blocking dentinal tubules and reducing nerve signal transmission. In polymer processing, it functions as a flame retardant additive by promoting char formation and interrupting combustion cycles. It also serves as a catalyst or catalyst precursor in select chemical synthesis routes.

Strontium chloride is available in anhydrous and hexahydrate grades as a white crystalline powder, with supply conforming to REACH registration requirements for the European market. Pharmaceutical-grade material can be sourced to Ph.Eur. specifications where applicable. Packaging is typically offered in multi-layer bags or fibre drums suited to industrial procurement volumes.