Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
Magnesium Hydroxide ACS
ACS
Sample COA. Contact Alliance Chemical with your lot number to request a lot-specific COA.
- CAS number
- 1309-42-8
- Structure
Structure · PubChem - Grade
- ACS
- Assay specification
- 95.00 - 100.5 %
- Answer summary
Sample specification reference for Magnesium Hydroxide ACS. Source-record results are reference values, not measurements for your lot.
Last reviewed 2026-06-17 by Andre Taki, Chief Commercial Officer, DOT Hazmat–certified (49 CFR 172.704).
Specifications
| Parameter | Specification | Source reference result | Test Method |
|---|---|---|---|
| Assay [Mg(OH)2] | 95.00 - 100.5 % | 97.77 % | — |
| Arsenic (As) | 3 ppm max | 0.08 ppm | — |
| Calcium (Ca) | 1.50 % max | 0.077 % | — |
| Carbonate (CO3) | To pass test | Passes test | — |
| Heavy metals (as Pb) | 0.01 % max | 0.0012 % | — |
| Loss on drying @ 105 C | 2.00 % max | 0.49 % | — |
| Loss on ignition | 30 - 33.00 % | 31.45 % | — |
| Identification (magnesium) | To pass test | Passes test | ACS identification test - flame reaction and precipitation with ammonium phosphate |
| Insoluble in dilute hydrochloric acid | 0.02 % max | 0.0082 % | Gravimetric - dissolve in dilute HCl, filter, ignite residue |
| Chloride (Cl) | 0.03 % max | 0.0059 % | Turbidimetric comparison with AgNO3 against chloride standard |
| Sulfate (SO4) | 0.10 % max | 0.011 % | Turbidimetric comparison with BaCl2 against sulfate standard |
| Iron (Fe) | 0.02 % max | 0.0023 % | Colorimetric, 1,10-phenanthroline (or ICP-OES) |
| Ammonium hydroxide precipitate (as R2O3) | 0.02 % max | 0.0055 % | Gravimetric - NH4OH precipitation, ignition to mixed oxides |
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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