Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
Nitric Acid 25% Technical Grade
Technical · 25%
Sample COA. Contact Alliance Chemical with your lot number to request a lot-specific COA.
- CAS number
- 7697-37-2
- Structure
Structure · PubChem - Grade
- Technical · 25%
- Assay specification
- 24.5 - 25.5%
- Answer summary
Sample specification reference for Nitric Acid 25% 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 (HNO3) | 24.5 - 25.5% | 24.90 % | — |
| Color (APHA) | <= 100 | 5 | — |
| Nitrite (NO2) | <= 100 ppm | 0.55 ppm | — |
| Chloride (Cl) | <= 10 ppm | 0.025 ppm | — |
| Iron (Fe) | <= 10 ppm | 0.011 ppm | — |
| Phosphate (PO4) | 0.0001 % max | 0.0000023 % | Molybdenum blue colorimetric |
| Substances reducing permanganate (as HNO2) | 0.00019 % max | 0.000028 % | Titrimetric, KMnO4 decolorization |
| Appearance | Colorless to a pale yellow | Passes test | — |
| Lead (Pb) | 0.0000025% max | 0.00000017 % | — |
| Residue after Ignition | 5.1 ppm max | 0.31 ppm | — |
| Sulfates (SO4) | 1.8 ppm max | 0.060 ppm | — |
| fluoride | 1.9 ppm max | 0.020 ppm | — |
| oxides of nitrogen | 38 ppm max | 0.36 ppm | — |
| oxidizable constituents as hno2 | 5.8 ppm max | 0.27 ppm | — |
| non-volatiles | 0.019 % max | 0.000051 % | — |
| Specific gravity (20 °C) | 1.141 - 1.151 | 1.145 | — |
| Composition | 25 % nitric 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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