(CAS No. 304-59-6 Chemical Formula KNaC4H4O6 Mol. 210.16 (Potassium Rochelle Salts Seignette Salt) Appearance : Tetrahydrate, Translucent crystals, or white crystalline powder. Cooling saline taste. Grade : Technical/ Chemically Pure/ NF/BP/USP/L.R/A.R Packing : 25/50 kgs Fibre Drums with double PP bags and inner liner. Uses : In Medicines (Cathartic), Baking powders, Confectionery Industries, and Manufacturing of Mirrors. For control of Radio frequencies.