Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
Sodium Bisulfite 15% ACS Grade
ACS
Sample COA. Contact Alliance Chemical with your lot number to request a lot-specific COA.
- CAS number
- 7631-90-5
- Structure
Structure · PubChem - Grade
- ACS
- Assay specification
- 14.5 - 15.5 % by wt
- Answer summary
Sample specification reference for Sodium Bisulfite 15% 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 (NaHSO3) | 14.5 - 15.5 % by wt | 14.92 % | — |
| Sulfur dioxide (SO2), available | 8.9 - 9.5 % by wt | 9.2 % | Iodometric titration (I2 / Na2S2O3 back-titration) |
| Chloride (Cl) | 0.003 % max | 0.00018 % | — |
| Heavy metals (as Pb) | 0.00015 % max | 0.000060 % | — |
| Insoluble matter | 0.00075 % max | 0.00017 % | — |
| Iron (Fe) | 0.0003 % max | 0.000061 % | — |
| Composition | 15 % sodium hydrogen sulfite in deionized water, by weight | Conforms | By formulation; confirmed by specific gravity |
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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