Synonym: Calcined soda, Carbonic acid disodium salt, Soda ash
CAS Number: 497-19-8
Linear Formula: Na2CO3
Molecular Weight: 105.99
Beilstein Registry Number: 4154566
EC Number: 207-838-8
MDL Number: MFCD00003494
PubChem Substance ID: 24858961
Biochem/physiol Actions
Buffer component, may be used for the removal of peripheral membrane proteins.
Grade: ACS reagent, reag. ISO, reag. Ph. Eur.; puriss. p.a.
Assay: ≥99.8% (calc. to the dried substance)
Impurities: residual solvents, complies; ≤0.0005% heavy metals (as Pb); ≤0.001% total nitrogen (N); ≤0.003% total S (as SO4); ≤0.01% in water insoluble matters
Loss: ≤0.5% loss on drying, 300 °C
MP: 851 °C(lit.)
Anion Traces: chloride (Cl-): ≤10 mg/kg; phosphate (PO43-): ≤10 mg/kg; silicate (as SiO2): ≤20 mg/kg
Cation Traces: Ag: ≤5 mg/kg; Al: ≤10 mg/kg; As: ≤0.5 mg/kg; Ba: ≤5 mg/kg; Bi: ≤5 mg/kg; Ca: ≤50 mg/kg; Cd: ≤5 mg/kg; Co: ≤5 mg/kg; Cr: ≤5 mg/kg; Cu: ≤5 mg/kg; Fe: ≤5 mg/kg; K: ≤50 mg/kg; Li: ≤5 mg/kg; Mg: ≤20 mg/kg; Mn: ≤5 mg/kg; Mo: ≤5 mg/kg; Ni: ≤5 mg/kg; Pb: ≤5 mg/kg; Sr: ≤20 mg/kg; Zn: ≤5 mg/kg