Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
Propylene Glycol 40% – Technical Grade
Technical Grade · 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 Propylene Glycol 40% – Technical Grade. Source-record results are reference values, not measurements for your lot.
- Assay specification
- 39.0 - 41.0 %, by volume
- Grade
- Technical Grade
Specifications
| Parameter | Specification | Source reference result | Test Method |
|---|---|---|---|
| Assay | 39.0 - 41.0 %, by volume | 40.0 % | — |
| Propylene glycol concentration | 39.0 - 41.0 % v/v | 40.0 % | — |
| Dilution water quality (conductivity @ 25 °C) | Deionized water; ≤ 10 µS/cm | 1.0 | ASTM D1125 |
| Dipropylene glycol (DPG) | 0.2 wt% max | 0.100 wt% | GC area % (ASTM E202) |
| Acidity as Acetic Acid | 0.002 % max | 0.00061 % | — |
| Chlorides as Cl | 0.64 ppm max | 0.16 ppm | — |
| Heavy Metals as Pb | 2 ppm max | 0.081 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 / 60 % deionized water, by volume | Conforms | By formulation; confirmed by specific gravity |
| Freeze point | -6.7 °F (-21.5 °C) max | -6.7 °F (-21.5 °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.