Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
Sodium Bisulfite 10% ACS Grade
ACS · 10%
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 · 10%
- Assay specification
- 9.5 - 10.5 % by wt
- Answer summary
Sample specification reference for Sodium Bisulfite 10% 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) | 9.5 - 10.5 % by wt | 10.0 % | — |
| Sulfur dioxide (SO2), available | 5.9 - 6.5 % by wt | 6.2 % | Iodometric titration (I2 / Na2S2O3 back-titration) |
| Chloride (Cl) | 0.002 % max | 0.00013 % | — |
| Heavy metals (as Pb) | 0.0001 % max | 0.000025 % | — |
| Insoluble matter | 0.0005 % max | 0.0001 % | — |
| Iron (Fe) | 0.0002 % max | 0.00003 % | — |
| Composition | 10 % 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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