... 3.Molecular weight:40.00 4.Packing: 25kg 1.caustic soda pearl 2.Caustic Soda 99% 3,Free sample 4.Prompt delivery 5,competition ... pricecaustic soda pearl 1, Properties: NaOH, Molecular Weight: 40, CAS No ... , inside with plastic coating bags. Or 1000kg big bags as buyer required. Caustic Soda Pearls