S 2477 (OTTO) Sodium tungstate, dihydrate, GR 99%+ Cas 10213-10-2 - used in the analysis mucoproteins by the Folin-Ciocalteu method. S 2477 (OTTO) Sodium tungstate, dihydrate, GR 99%+ Cas 10213-10-2 - used in baths of metallic protection electrolytic bath.