Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
Sodium Hydroxide 25% Technical Grade
25%
Sample COA. Contact Alliance Chemical with your lot number to request a lot-specific COA.
- CAS number
- 1310-73-2
- Structure
Structure · PubChem - Grade
- 25%
- Assay specification
- 24.0 - 26.0 wt%
- Answer summary
Sample specification reference for Sodium Hydroxide 25% Technical Grade. Source-record results are reference values, not measurements for your lot.
Last reviewed 2026-07-06 by Andre Taki, Chief Commercial Officer, DOT Hazmat–certified (49 CFR 172.704).
Specifications
| Parameter | Specification | Source reference result | Test Method |
|---|---|---|---|
| Assay (NaOH) | 24.0 - 26.0 wt% | 24.9 wt% | — |
| Appearance | Transparent liquid | Passes test | — |
| Sodium Chloride (NaCl) | 50 ppm max | 15 ppm | Turbidimetry |
| Color (APHA) | Max 20 | 6 | ASTM D1209 (Pt-Co) |
| Nickel (Ni) | 0.51 ppm max | 0.13 ppm | ICP-OES |
| Mercury (Hg) | 0.025 ppm max | 0.00056 ppm | Cold vapor AAS |
| Sodium chlorate (NaClO3) | 20 ppm max | 9.3 PPM | Ion Chromatography |
| Iron (Fe) | 1.5 ppm max | 0.23 ppm | Colorimetry |
| Sodium Carbonate (Na2CO3) | 0.05 % max | 0.015 % | Titrimetry |
| Sodium sulfate (Na2SO4) | 20 ppm max | 2.5 ppm | Ion Chromatography |
| Specific gravity (20 °C) | 1.269 - 1.279 | 1.272 | — |
| Composition | 25 % sodium hydroxide in deionized water, by weight | Conforms | By formulation; confirmed by specific gravity |
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.
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