Appearance: White, free-flowing crystals; occasional dark specks may be present.* Meets or exceeds ACS Reagent Grade Specifications * Occasional dark particles may be visible and scattered in the product. The particles have no detectable effect on product purity and will not be cause for rejection. Application: ACS grade used for Electrolyte for dry cells used at low temperatures, catalyst in certain oxidation reactions, solubilizer for polyamides and cellulose when used with amide solvents, chlorinating agent for steroid substrates.