Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
Oxalic Acid, Dihydrate - Ethanedioic Acid Technical Grade
Technical
Sample COA. Contact Alliance Chemical with your lot number to request a lot-specific COA.
- CAS number
- 6153-56-6
- Structure
Structure · PubChem - Grade
- Technical
- Assay specification
- 98.5 - 101.5 %
- Answer summary
Sample specification reference for Oxalic Acid, Dihydrate - Ethanedioic Acid Technical Grade. Source-record results are reference values, not measurements for your lot.
Last reviewed 2026-07-17 by Andre Taki, Chief Commercial Officer, DOT Hazmat–certified (49 CFR 172.704).
Specifications
| Parameter | Specification | Source reference result | Test Method |
|---|---|---|---|
| Assay [(COOH)2•2H2O] | 98.5 - 101.5 % | 99.8 % | — |
| Appearance | Snow white crystals | Passes test | — |
| Calcium (Ca) | Max. 0.007 % | 0.0020 % | — |
| Chloride (Cl) | Max. 0.003 % | 0.00070 % | — |
| Heavy metals (as Pb) | Max. 0.001 % | 0.00020 % | — |
| Iron (Fe) | Max. 0.004 % | 0.00074 % | — |
| Magnesium (Mg) | Max. 0.005 % | 0.00039 % | — |
| Nitrogen compounds | Max. 0.008 % | 0.0009 % | — |
| Sulphated ash | Max. 0.04 % | 0.013 % | — |
| Sulphate (SO4) | 0.08 % max | 0.0069 % | — |
| Water insoluble matter | Max. 0.02 % | 0.0035 % | Gravimetric - 10 g in 100 mL water, filtered through tared sintered glass, dried at 105 C |
| Melting point | 99 - 102 C (with decomposition) | 100.5 C | Capillary melting point apparatus |
| ignition 850°c | 0.05 % max | 0.014 | — |
| sodium | 0.001 % max | 0.00029 | — |
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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