Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
50% Propylene Glycol Inhibited
50%
Sample COA. Contact Alliance Chemical with your lot number to request a lot-specific COA.
- CAS number
- 57-55-6
- Structure
Structure · PubChem - Grade
- 50%
- Answer summary
Sample specification reference for 50% Propylene Glycol Inhibited. Source-record results are reference values, not measurements for your lot.
Last reviewed 2026-07-16 by Andre Taki, Chief Commercial Officer, DOT Hazmat–certified (49 CFR 172.704).
Specifications
| Parameter | Specification | Source reference result | Test Method |
|---|---|---|---|
| Propylene glycol content | 49.5 - 50.5 % w/w | 50.0 % w/w | Formulation (batch weights); verified by refractive index against an in-house propylene glycol calibration / relative density (ASTM D1122) |
| Appearance | Clear, colorless to pale yellow liquid, free of sediment and suspended matter (not dyed) | Conforms | Visual |
| Corrosion inhibitor package | 1.8 - 2.2 % w/w (nitrite-containing hybrid organic-acid) | 2.0 % w/w | Formulation (batch weights) |
| Nitrite (as NO2) | 1,200 ppm min. (calculated 1,300–2,700 ppm at the 2.0% dose) | Conforms | Formulation minimum (calculated from inhibitor dose) |
| Freeze point | -27 °F (-32.8 °C) max | approx. -28 °F (-33 °C) | ASTM D1177 |
| pH, as supplied | 7.0 - 9.0 (typical) | Conforms | ASTM D1287 |
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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