Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
40% Propylene Glycol Inhibited
Technical · 40%
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 40% 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 | 37.0 – 43.0 (% by weight) | 40.0 % | — |
| Color | Clear, "Water-White" | Passes test | — |
| pH of Solution (50% glycol) | 9.5 – 10.5 | 10.0 | — |
| Reserve alkalinity | ≥ 4.0 mL at 40 wt % propylene glycol | 4.6 | 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) | 0.2 wt% max | 0.100 wt% | GC area % (ASTM E202) |
| Acidity as Acetic Acid | 0.002 % max | 0.0006 % | — |
| Chlorides as Cl | 0.64 ppm max | 0.16 ppm | — |
| Heavy Metals as Pb | 2 ppm max | 0.08 ppm | — |
| Iron | 0.41 ppm max | 0.04 ppm | — |
| ash | 0.002% max | 0.00032 % | — |
| Appearance | Pass | Passes test | — |
| Suspended Matter | Pass | Passes test | — |
| Composition | 40 % propylene glycol in deionized water with the OAT inhibitor package, by weight | Conforms | By formulation; confirmed by specific gravity |
| Freeze point | -6.0 °F (-21.1 °C) max | -6.0 °F (-21.1 °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.