Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
Phosphoric Acid 50% ACS Grade
ACS · 50%
Sample COA. Contact Alliance Chemical with your lot number to request a lot-specific COA.
- CAS number
- 7664-38-2
- Structure
Structure · PubChem - Grade
- ACS · 50%
- Assay specification
- 49.5 - 50.5 %
- Answer summary
Sample specification reference for Phosphoric Acid 50% 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 (H3PO4) | 49.5 - 50.5 % | 50.10 % | — |
| Insoluble matter | 0.00059% max | 0.000054 % | — |
| Arsenic (As) | 0.59 ppm max | 0.022 ppm | — |
| Calcium (Ca) | 0.0012% max | 0.00014 % | — |
| Chloride (Cl) | 1.9 ppm max | 0.34 ppm | — |
| Heavy metals (as Pb) | 0.00059 % max | 0.000066 % | — |
| Iron (Fe) | 0.0018% max | 0.000043 % | — |
| Magnesium (Mg) | 0.0012% max | 0.00009 % | — |
| Nitrate (NO3) | 3.1 ppm max | 0.34 ppm | — |
| KMnO4 reducible matter (as O) | 0.00059% max | 0.000028 % | — |
| Sodium (Na) | 0.015% max | 0.0013 % | — |
| Sulfate (SO4) | 0.0018% max | 0.00052 % | — |
| Volatile acids (as CH3COOH) | 0.00059% max | 0.00017 % | — |
| Color (APHA) | Max 10 | 4 | — |
| Reducing substances | Passes Test | Passes test | — |
| Specific gravity (20 °C) | 1.331 - 1.341 | 1.337 | — |
| Composition | 50 % phosphoric 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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