S 1617 (OTTO) Sodium acetate, trihydrate, GR 99%+ Cas 6131-90-4 - used in several applications. A formulation with ethanol may be used for precipitation of nucleic acids. S 1617 (OTTO) Sodium acetate, trihydrate, GR 99%+ Cas 6131-90-4 - used in the preparation of gel stains for protein gel electrophoresis.