Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
Inhibited Propylene Glycol 50/50 with OAT Inhibitor — Data Center Coolant
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 Inhibited Propylene Glycol 50/50 with OAT Inhibitor — Data Center Coolant. Source-record results are reference values, not measurements for your lot.
- Assay specification
- 49.0 - 51.0 % w/w
Specifications
| Parameter | Specification | Source reference result | Test Method |
|---|---|---|---|
| Assay | 49.0 - 51.0 % w/w | 50.0 % | — |
| Propylene glycol concentration | 49.0 - 51.0 % w/w | 50.0 % | — |
| Inhibitor loading (OAT package) | 1.0–2.5 % OAT inhibitor package | 1.75 % | Batch charge record / ion chromatography of carboxylates |
| Reserve alkalinity | ≥ 3.0 mL at 50 wt % propylene glycol | 3.6 | ASTM D1121 |
| Silicate, phosphate, nitrite, nitrate, borate and amine content | None detected (< 10 ppm each) | 0.3 ppm | ICP-OES / ion chromatography |
| Foaming tendency | Volume ≤ 150 mL; break time ≤ 5 s | Passes test | ASTM D1881 |
| Dipropylene glycol (DPG) | 0.25 wt% max | 0.125 wt% | GC area % (ASTM E202) |
| Freeze point | -28.3 °F (-33.5 °C) max | -28.3 °F (-33.5 °C) | ASTM D1177 |
| Burst protection | ≤ -45 °C (-49 °F) | -47 °C (-53 °F) | Burst test |
| 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 % | — |
| Color, Pt-Co | 10 APHA (maximum) | 2.5 APHA | — |
| 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 |
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.