Synonyms: Sodium hydrogen carbonate
Molecular Formula: CHNaO3
Molecular Weight: 84.01
Linear Structural Formula: NaHCO3
MDL Number: MFCD00003528
Purity: >=99.7%
Density: 2.16 g/mL at 25 C (lit.)
Legal Information: Redi-Dri is a trademark of Sigma-Aldrich Co. LLC
Grade: ACS reagent; Redi-Dri™; anhydrous
Assay: ≥99.7%
Quality: free-flowing
Impurities: ≤0.015% insoluble matter
pKa (25°C): (1) 6.37, (2) 10.25 (carbonic acid)
Anion Traces: chloride (Cl-): ≤0.003%; phosphate (PO43-): ≤0.001 ppm; sulfur compounds (as SO42-): ≤0.003%
Cation Traces: Ca: ≤0.02%; Fe: ≤0.001%; K: ≤0.005%; Mg: ≤0.005%; NH4+: ≤5 ppm; heavy metals (as Pb): ≤5 ppm