Properties: NaOH, Molecular Weight: 40, CAS No.: 1310-73-3, UN No.: 1823, Dangerous Characterisics: White solid or flakes with strong corrosiveness, easily soluble in water, presenting alkaline solution and heat liberation, presenting deliquescence when exposed to air. Specification: Purity Na2CO3 NaCl Fe2O3 99% 1.1% max 0.6% max 0.01% max