Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
50% Propylene Glycol Technical Grade
Technical Grade · 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 Technical Grade. Source-record results are reference values, not measurements for your lot.
- Assay specification
- 49.0 - 51.0 %, by volume
- Grade
- Technical Grade
Specifications
| Parameter | Specification | Source reference result | Test Method |
|---|---|---|---|
| Assay | 49.0 - 51.0 %, by volume | 50.0 % | — |
| Propylene glycol concentration | 49.0 - 51.0 % v/v | 50.0 % | — |
| Dilution water quality (conductivity @ 25 °C) | Deionized water; ≤ 10 µS/cm | 1.0 | ASTM D1125 |
| 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 % | — |
| Color, Pt-Co | 10 APHA (maximum) | 2.5 APHA | — |
| Appearance | Pass | Passes test | — |
| Suspended Matter | Pass | Passes test | — |
| Composition | 50 % propylene glycol / 50 % deionized water, by volume | Conforms | By formulation; confirmed by specific gravity |
| Freeze point | -28.6 °F (-33.7 °C) max | -28.6 °F (-33.7 °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.