Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
Sodium Bisulfite 25% ACS Grade
ACS · 25%
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Sample COA. Lot-specific COAs ship with each order.
Last reviewed 2026-07-17.
COA · Answer summary
Typical certificate of analysis for Sodium Bisulfite 25% ACS Grade. Lot-specific results ship with every order.
- Assay (computed)
- 25.00%
- Grade
- ACS
Specifications
| Parameter | Specification | Typical Result | Test Method |
|---|---|---|---|
| Assay | 95 – 105 % | 25 % | Titration/Gravimetric |
| Appearance/Odor | — | — | Visual Inspection |
| Arsenic (As) | — | — | ICP-MS |
| Calcium (Ca) | — | — | ICP-MS |
| Chloride (Cl) | — | — | ICP |
| Fluoride (F) | — | — | Ion Chromatography |
| Heavy Metals (as Pb) | — | — | ICP-MS (as Pb) |
| Insoluble Matter | — | — | Gravimetric |
| Insolubles | ≤ 0.2 % | — | Filtration |
| Iron | ≤ 0.5 % | — | ICP |
| Lead (Pb) | — | — | ICP-MS |
| Magnesium (Mg) | — | — | ICP-MS |
| Mercury (Hg) | — | — | ICP-MS |
| Moisture | — | — | Karl Fischer |
| pH | 6 – 8 | 7 | pH Meter |
| Potassium (K) | — | — | ICP-MS |
| Residue/Non-volatile | — | — | Residue on Ignition |
| Selenium (Se) | — | — | ICP-MS |
| Silica (SiO2) | — | — | Gravimetric |
| Specific Gravity @20°C | 1.1 – 1.4 g/mL | 1.25 g/mL | Hydrometer @ 25°C |
| Sulfate | — | — | ICP-MS |
Generated . Published by Alliance Chemical from first-party canonical product data. Our authority is hands-on chemical handling, DOT/GHS-compliant shipping, and government-registered distribution — not bench chemistry. Values are representative of typical production lots and reflect the published specification range. Lot-specific COAs are provided with every shipment.