Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
Sodium Hydroxide Flakes
Technical · 97%
Sample COA. Contact Alliance Chemical with your lot number to request a lot-specific COA.
- CAS number
- 1310-73-2
- Structure
Structure · PubChem - Grade
- Technical · 97%
- Assay specification
- 98% Min
- Answer summary
Sample specification reference for Sodium Hydroxide Flakes. Source-record results are reference values, not measurements for your lot.
Last reviewed 2026-06-18 by Andre Taki, Chief Commercial Officer, DOT Hazmat–certified (49 CFR 172.704).
Specifications
| Parameter | Specification | Source reference result | Test Method |
|---|---|---|---|
| Purity (dry basis), as NaOH | 98% Min | 99.6% | ASTM E291 |
| Appearance | White | Passes test | — |
| Sodium chloride (NaCl) | 100 Max ppm | 46 ppm | ASTM E291 |
| Heavy metals (as Pb) | ≤ 0.001% | 0.000072% | — |
| Iron (Fe) | 15 ppm max | 0.70 ppm | — |
| Nickel (Ni) | 5.0 Max ppm | 1.1 ppm | HACH 10220 |
| Sodium carbonate (Na2CO3) | 0.2 Max % | 0.13 % | ASTM E291 |
| Water (H2O) | 1.0 % Max | 0.4 % | Karl Fischer titration |
| Sodium sulfate (Na2SO4) | 0.05 % Max | 0.0008 % | Turbidimetric (BaSO4) |
| aluminum | 40 ppm max | 1.5 ppm | — |
| calcium | 45 ppm max | 0.7 ppm | — |
| copper | 1.5 ppm max | 0.13 ppm | — |
| excess sodium hydroxide | 98 % min | 99.0 % | — |
| magnesium | 30 ppm max | 0.30 ppm | — |
| manganese | 0.75 ppm max | 0.050 ppm | — |
| naclo3 | 40 ppm max | 13 ppm | — |
| retained 16mesh | 25 % max | 15.5 % | — |
| retained 4mesh | 95 % max | 82.6 % | — |
| silicon | 350 ppm max | 13 ppm | — |
| strontium | 15 ppm max | 0.33 ppm | — |
Specification limits and source-record results are reproduced from the current product reference used by the TDS. This sample is not an issued certificate and does not identify a tested lot. Contact Alliance Chemical with the product and lot number for lot-specific documentation.
Need the Certificate of Analysis for your lot? Just ask.
Tell us the lot number from the container label and we will send the certificate over at no charge.