City Chemical manufactures high purity Clerici Solution, CAS 61971-47-9 in bulk quantity. Clerici solution is a clear pale yellow liquid, density 3.5 at 25ºC. Clerici solution is an aqueous solution prepared from equal parts Thallium Formate & Thallium Malonate.

Clerici Solution is important in mineralogy, it is used to separate minerals by density. Floatation in Clerici solution for density measuring is one of the most effective methods in the determination of the specific gravity of precious minerals.