REFINED CAUSTIC SODA(Sodium Hydroxide) White opaque solid, easy deliquescence. Solubility: soluble in water, ethanol, glycerin, insoluble in acetone.NAOH is widely used in metallurgy, petroleum, chemicals, textile, paper making, printing and dyeing, soap industry, pharmacy and food industry, metal hard wares Purity 99% TYPE white Pearl FORMULAR NAOH CAS NO 1310-73-2 HS CODE 2815110000 EINECS NO 215-185-5 Main Content (NaOH) % 99% min. Sodium Carbonate (Na2Co3)% 0.5% max Sodium Chloride (NaCl) % 0.03% max Fe Oxide (Fe2O3)% 0.005% max