Description Sodium Hydroxide, Pellets, ACS, 97+%, 5kg For Research & Development Not for drug, human, animal, or food use Specifications: Meets ACS/USP/NF/FCC Specifications Assay (as NaOH) - ACS - 97+%Assay (as NaOH) - NF/ FCC - 95.0-100.5% Sodium Carbonate (Na2CO3) - ACS - <1%Sodium Carbonate (Na2CO3) - NF/ FCC - <3% Identification - NF - Passes Test Sulfate (SO4) - ACS - <0.003% Chloride (Cl) - ACS - <0.005% Nitrogen Compounds (as N) - ACS - <0.001% Phosphate (PO4) - ACS - <0.001% Heavy Metals (as Ag) - ACS - <0.002% Heavy Metals (as Pb) - NF - <0.003% Lead (Pb) - FCC - <2 ppm Iron (Fe) - ACS - <0.001% Nickel (Ni) - ACS - <0.001% Mercury (Hg) - ACS & FCC - <0.1 ppm Calcium (Ca) - ACS - <0.005% Magnesium (Mg) - ACS - <0.002% Potassium (K) - ACS <0.02%Potassium (K) - NF - Passes Test Arsenic (As) - FCC - <3 ppm Insoluble Substances and Organic Matter - NF/ FCC - Passes Test CAS: 1310-73-2 FORMULA: NaOH