Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
Hydrofluorosilicic Acid 23% (HFS)
Technical · 23%
Sample COA. Contact Alliance Chemical with your lot number to request a lot-specific COA.
- CAS number
- 16961-83-4
- Structure
Structure · PubChem - Grade
- Technical · 23%
- Assay specification
- 23.0 % min.
- Answer summary
Sample specification reference for Hydrofluorosilicic Acid 23% (HFS). 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 (H2SiF6) | 23.0 % min. | 23.8 % | — |
| Free acid (HF) | 1.0 maximum % | 0.31 % | — |
| Color | water white to straw yellow | Passes test | — |
| Heavy Metals (as lead, Pb) | <0.02% | 0.00064 % | — |
| Suspended matter | clean and free of visible suspended matter | Passes test | — |
| Specific gravity @ 60 F (15.6 C) | 1.185 - 1.215 | 1.199 | Hydrometer, AWWA B703 |
| Arsenic (As) | 10 mg/kg maximum | 1.3 mg/kg | ICP-MS |
| Sulfate (SO4) | 0.5 % maximum | 0.17 % | Ion chromatography / gravimetric (BaSO4) |
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.
Need the Certificate of Analysis for your lot? Just ask.
Tell us the lot number from the container label and we will send the certificate over at no charge.