Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
Sodium Hydroxide 20% Technical Grade
Technical · 20%
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 · 20%
- Assay specification
- 19.5 - 20.5 % w/w
- Answer summary
Sample specification reference for Sodium Hydroxide 20% Technical Grade. 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 |
|---|---|---|---|
| Assay (NaOH) | 19.5 - 20.5 % w/w | 19.98 % | — |
| Color (APHA) | Max 20 | 5 | ASTM D1209 (Pt-Co) |
| Nickel (Ni) | 0.41 ppm max | 0.139 ppm | ICP-OES |
| Mercury (Hg) | 0.02 ppm max | 0.00055 ppm | Cold vapor AAS |
| Sodium chlorate (NaClO3) | 16 ppm max | 3.7 PPM | Ion Chromatography |
| Sodium Chloride (NaCl) | 40 ppm max | 11 ppm | Turbidimetry |
| Iron (Fe) | 1.2 ppm max | 0.21 ppm | Colorimetry |
| Sodium Carbonate (Na2CO3) | 0.04 % max | 0.014 % | Titrimetry |
| Sodium sulfate (Na2SO4) | 17 ppm max | 2.2 ppm | Ion Chromatography |
| Density (20 °C) | 1.212 - 1.226 g/cm³ | 1.220 | ASTM D4052 (digital density meter) |
| Composition | 20 % sodium hydroxide in deionized water, by weight | Conforms | By formulation; batch weights (scale ticket) |
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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