Item S1260 Item Sodium Cyanide, Reagent, ACS CAS 143-33-9 Molecular Formula NaCN Molecular Weight 49.01 MDL Synonyms Test Specification Min Max ASSAY (NaCN) 95.0 % CHLORIDE (Cl) 0.15 % STE (PO4 ) 0.02 % SULFATES (SO4 ) 0.05 % SULFIDE (S) 0.005 % THIOCYANATE 0.02 % IRON, TOTAL (as Fe) 0.005 % LEAD (Pb) 5 ppm