Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
Oxalic Acid ACS Grade
ACS Grade
Sample COA. Contact Alliance Chemical with your lot number to request a lot-specific COA.
- CAS number
- 6153-56-6
- Structure
Structure · PubChem - Grade
- ACS Grade
- Assay specification
- 99.5-102.5%
- Answer summary
Sample specification reference for Oxalic Acid ACS 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 | 99.5-102.5% | 101.2 % | Redox Titration |
| Calcium (Ca) | 0.001 % max | 0.00014 % | — |
| Chloride (Cl) | 0.002 % max | 0.00036 % | — |
| Heavy metals | 5 ppm max | 0.39 ppm | ICP-OES |
| Insoluble material | ≤0.005% | 0.0007% | — |
| Iron (Fe) | 2 ppm max | 0.38 ppm | — |
| Nitrogen compounds (as N) | ≤0.001% | 0.00018 % | — |
| Residue after ignition | 0.01 % max | 0.0017 % | — |
| Substances darkened by hot sulfuric acid | To pass test | Passes test | — |
| Sulfates (SO4) | 0.005 % max | 0.0011 % | — |
| Identification (Infrared absorption) | Conforms to reference spectrum of oxalic acid dihydrate | Passes test | FTIR, KBr disc, comparison to reference spectrum |
| Melting range | 99 - 102 C (with decomposition) | 100.5 C | Capillary melting point apparatus |
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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