Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
Hydrochloric Acid 31% ACS Grade
ACS · 31%
Sample COA. Contact Alliance Chemical with your lot number to request a lot-specific COA.
- CAS number
- 7647-01-0
- Structure
Structure · PubChem - Grade
- ACS · 31%
- Assay specification
- 30.5 - 31.5 %
- Answer summary
Sample specification reference for Hydrochloric Acid 31% ACS Grade. Source-record results are reference values, not measurements for your lot.
Last reviewed 2026-10-08.
Specifications
| Parameter | Specification | Source reference result | Test Method |
|---|---|---|---|
| Assay (HCl) | 30.5 - 31.5 % | 30.85 % | — |
| Ammonium (NH4) | 2.5 ppm max | 0.21 ppm | — |
| Arsenic (As) | 0.0084 ppm max | 0.0017 ppm | — |
| Bromide (Br) | 0.0042% max | 0.00085 % | — |
| Extractable organic substances | 4.2 ppm max | 0.44 ppm | — |
| Free chlorine (Cl) | 0.84 ppm max | 0.118 ppm | — |
| Heavy metals (as Pb) | 0.84 ppm max | 0.067 ppm | — |
| Iron (Fe) | 0.17 ppm max | 0.026 ppm | — |
| Residue after ignition | 4.5 ppm max | 0.59 ppm | — |
| Sulfate (SO4) | 1 ppm max | 0.23 ppm | — |
| Sulfite (SO3) | 0.84 ppm max | 0.034 ppm | — |
| Color (APHA) | 10 max | 1 | — |
| Appearance | Clear, Colorless | Passes test | — |
| Composition | 31 % hydrochloric acid 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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