Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
Sodium Bisulfite 40% Technical Grade
Technical · 40%
Sample COA. Contact Alliance Chemical with your lot number to request a lot-specific COA.
- CAS number
- 7631-90-5
- Structure
Structure · PubChem - Grade
- Technical · 40%
- Assay specification
- 38.0 - 42.0 % by wt
- Answer summary
Sample specification reference for Sodium Bisulfite 40% 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 (NaHSO3) | 38.0 - 42.0 % by wt | 40.4 % | — |
| SO2 available | 23.4 - 25.8 % by wt | 24.9 % | — |
| Specific Gravity @ 25°C | 1.310 - 1.370 | 1.343 | — |
| Iron (Fe) | ≤ 15 ppm | 1.1 ppm | — |
| pH | 3.8 - 5.0 | 4.4 | — |
| Sodium sulfate | ≤ 3.5 wt. % | 0.67 wt. % | — |
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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