Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
Sodium Hydroxide 25% ACS Grade
ACS Grade · 25%
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Sample COA. Lot-specific COAs ship with each order.
Last reviewed 2026-05-20.
COA · Answer summary
Typical certificate of analysis for Sodium Hydroxide 25% ACS Grade. Lot-specific results ship with every order.
- Assay (computed)
- 25.00%
- Grade
- ACS Grade
Specifications
| Parameter | Specification | Typical Result | Test Method |
|---|---|---|---|
| Assay (Titration) | 24.5 – 25.5 % | 25 % | Titration |
| Calcium (Ca) | ≤ 50 ppm | 20 ppm | ICP-MS |
| Carbonate | ≤ 0.1 % | 0 % | Titration |
| Chloride | ≤ 50 ppm | 9 ppm | Ion chromatography |
| Iron | ≤ 2 ppm | 1 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 | ≤ 20 ppm | 8 ppm | Ion chromatography |
Generated . Published by Alliance Chemical from first-party canonical product data. Our authority is hands-on chemical handling, DOT/GHS-compliant shipping, and government-registered distribution — not bench chemistry. Values are representative of typical production lots and reflect the published specification range. Lot-specific COAs are provided with every shipment.