Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
Propylene Glycol Inhibited ACS Grade
ACS Grade
Sample COA. Contact Alliance Chemical with your lot number to request a lot-specific COA.
- CAS number
- 57-55-6
- Structure
Structure · PubChem - Grade
- ACS Grade
- Assay specification
- >= 99.5 %
- Answer summary
Sample specification reference for Propylene Glycol Inhibited ACS Grade. Source-record results are reference values, not measurements for your lot.
Last reviewed 2026-06-17 by Andre Taki, Chief Commercial Officer, DOT Hazmat–certified (49 CFR 172.704).
Specifications
| Parameter | Specification | Source reference result | Test Method |
|---|---|---|---|
| Assay (CH3CHOHCH2OH), corrected for water | >= 99.5 % | 99.91 % | — |
| Titrable acid | <= 0.0005 meq/g | 0.00017 meq/g | — |
| Chloride | 1 ppm max. | 0.26 ppm | — |
| Color (APHA) | 10 max. | 4 | — |
| Residue after ignition | <= 0.005 % | 0.00035 % | — |
| Water | <= 0.2 % | 0.029 % | Karl Fischer titration |
| Sulfate (SO4), base glycol | ≤ 5 ppm | 1.0 ppm | Turbidimetric (BaCl2) / ion chromatography |
| Heavy metals (as Pb), base glycol | ≤ 1 ppm | 0.18 ppm | Colorimetric sulfide / ICP-OES |
| Iron (Fe), base glycol | ≤ 0.2 ppm | 0.053 ppm | ICP-OES / 1,10-phenanthroline |
| Refractive index n20/D @ 20 °C, base glycol | 1.4310 - 1.4330 | 1.4322 | ASTM D1218 / Abbe refractometer |
| Distillation range, base glycol | 185.0 - 189.5 °C | 187.0 °C | ASTM D1078 |
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.
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