Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
Inhibited Propylene Glycol 40/60 with OAT Inhibitor — Data Center Coolant
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 Inhibited Propylene Glycol 40/60 with OAT Inhibitor — Data Center Coolant. Source-record results are reference values, not measurements for your lot.
- Assay specification
- 39.0 - 41.0 % w/w
Specifications
| Parameter | Specification | Source reference result | Test Method |
|---|---|---|---|
| Assay | 39.0 - 41.0 % w/w | 40.0 % | — |
| Propylene glycol concentration | 39.0 - 41.0 % w/w | 40.0 % | — |
| Inhibitor loading (OAT package) | 1.0–2.5 % OAT inhibitor package | 1.75 % | Batch charge record / ion chromatography of carboxylates |
| Reserve alkalinity | ≥ 2.4 mL at 40 wt % propylene glycol | 2.9 | 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) | 0.2 wt% max | 0.100 wt% | GC area % (ASTM E202) |
| Freeze point | -6.0 °F (-21.1 °C) max | -6.0 °F (-21.1 °C) | ASTM D1177 |
| Burst protection | ≤ -38 °C (-37 °F) | -40 °C (-40 °F) | Burst test |
| 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 % | — |
| Color, Pt-Co | 10 APHA (maximum) | 2 APHA | — |
| 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 |
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.