Industrial chemicals · Taylor, TXCertificate of AnalysisSample Certificate of Analysis
Sodium Hydroxide 20% ACS Grade
Download PDF
Sample COA. Lot-specific COAs ship with each order.
Specifications
| Parameter | Specification | Typical Result | Test Method |
|---|---|---|---|
| Assay (Titration) | 19.5 – 20.5 % | 21 % | Titration |
| Calcium (Ca) | ≤ 50 ppm | 25 ppm | ICP-MS |
| Carbonate | ≤ 1 % | 0 % | Titration |
| Chloride | ≤ 10 ppm | 0 ppm | Ion chromatography |
| Iron | ≤ 5 ppm | 0 ppm | ICP |
| Magnesium (Mg) | ≤ 20 ppm | 10 ppm | ICP-MS |
| Mercury (Hg) | ≤ 1 ppm | 0.3 ppm | ICP-MS |
| Nickel (Ni) | ≤ 10 ppm | 3 ppm | ICP-MS |
| Nitrogen | ≤ 10 ppm | 5 ppm | Kjeldahl / Chemiluminescence |
| Phosphate (PO4) | ≤ 10 ppm | 5 ppm | ICP |
| Potassium (K) | ≤ 0.02 % | 0.01 % | ICP-MS |
| Sulfate | ≤ 5 ppm | 0 ppm | Ion chromatography |
Generated . Values are representative of typical production lots and reflect the published specification range. Lot-specific COAs are provided with every shipment.