Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
50% Propylene Glycol Inhibited
Technical · 50%
Sample COA. Contact Alliance Chemical with your lot number to request a lot-specific COA.
Last reviewed 2026-07-16 by Andre Taki, DOT Hazmat Specialist.
COA · Answer summary
Sample specification reference for 50% Propylene Glycol Inhibited. Source-record results are reference values, not measurements for your lot.
- Grade
- Technical
Specifications
| Parameter | Specification | Source reference result | Test Method |
|---|---|---|---|
| Propylene glycol content | 48.0 – 54.0 (% by weight) | 50.0 % | — |
| Color | Clear, "Water-White" | Passes test | — |
| pH of Solution (50% glycol) | 9.5 – 10.5 | 10.0 | — |
| Reserve alkalinity | ≥ 5.0 mL at 50 wt % propylene glycol | 5.8 | ASTM D1121 |
| Corrosion performance | Weight loss within ASTM D3306 limits on all six metals | Passes test | ASTM D1384 |
| Chloride in dilution water | < 25 ppm | 0.5 ppm | ASTM D512 |
| Dipropylene glycol (DPG) | 0.25 wt% max | 0.125 wt% | GC area % (ASTM E202) |
| Acidity as Acetic Acid | 0.0025 % max | 0.00075 % | — |
| Chlorides as Cl | 0.7 ppm max | 0.2 ppm | — |
| Heavy Metals as Pb | 2.5 ppm max | 0.1 ppm | — |
| Iron | 0.51 ppm max | 0.05 ppm | — |
| ash | 0.0025% max | 0.0004 % | — |
| Appearance | Pass | Passes test | — |
| Suspended Matter | Pass | Passes test | — |
| Composition | 50 % propylene glycol in deionized water with the OAT inhibitor package, by weight | Conforms | By formulation; confirmed by specific gravity |
| Freeze point | -28.3 °F (-33.5 °C) max | -28.3 °F (-33.5 °C) | ASTM D1177 |
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.