Industrial chemicals · Taylor, TXCertificate of AnalysisSample Certificate of Analysis
Sodium Bisulfite 40% ACS Grade
ACS Grade · 40%
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Sample COA. Lot-specific COAs ship with each order.
Specifications
| Parameter | Specification | Typical Result | Test Method |
|---|---|---|---|
| Assay | 39.5 – 40.5 % | 40 % | Titration/Gravimetric |
| Appearance/Odor | — | — | Visual Inspection |
| Arsenic (As) | ≤ 0.01 ppm | 0.01 ppm | ICP-MS |
| Calcium (Ca) | ≤ 50 ppm | 20 ppm | ICP-MS |
| Chloride (Cl) | ≤ 50 ppm | 20 ppm | ICP |
| Insoluble Matter | ≤ 0.01 % | 0.01 % | Gravimetric |
| Iron | ≤ 10 ppm | 3 ppm | ICP |
| Magnesium (Mg) | ≤ 20 ppm | 10 ppm | ICP-MS |
| pH | 3.5 – 5 | 4 | pH Meter |
| Potassium (K) | ≤ 0.01 % | 0.01 % | ICP-MS |
| Specific Gravity @20°C | 1.31 – 1.37 g/mL | 1.33 g/mL | Hydrometer @ 25°C |
Generated . Values are representative of typical production lots and reflect the published specification range. Lot-specific COAs are provided with every shipment.