| Meets A.C.S. Specifications |
| Meets Reagent Specifications for testing USP/NF monographs |
| Assay (Na2CO3) (dried basis)(by acidimetry) min. 99.5 % |
| Insoluble Matter max. 0.01 % |
| Loss on Heating at 285 C max. 1.0 % |
| Chloride (Cl) max. 0.001 % |
| Phosphate (PO4) max. 0.001 % |
| Silica (SiO2) max. 0.005 % |
| Sulfur Compounds (as SO4) max. 0.003 % |
| Calcium (Ca) max. 0.03 % |
| Magnesium (Mg) max. 0.005 % |
| Potassium (K) max. 0.005 % |
| Trace Impurities (in ppm): |
| Heavy Metals (as Pb) max. 5 |
| Iron (Fe) max. 5 |