Industrial chemicals · Taylor, TXCertificate of Analysis
Certificado de análisis de muestra
Propylene Glycol USP Grade
USP Grade
COA de muestra. Contacte con Alliance Chemical con su número de lote para solicitar un COA específico de ese lote.
Última revisión el 2026-06-17 por Andre Taki, DOT Hazmat Specialist.
COA · Answer summary
Referencia de especificaciones de muestra para Propylene Glycol USP Grade. Los resultados del documento fuente son valores de referencia, no mediciones de su lote.
- Especificación de pureza
- not less than 99.5 percent
- Grado
- USP Grade
Especificaciones
| Parámetro | Especificación | Resultado de referencia del documento fuente | Método de ensayo |
|---|---|---|---|
| Assay (C3H8O2) | not less than 99.5 percent | 99.9 % | GC, thermal conductivity detector, 1-m x 4-mm column packed with 5% G16 on support S5, area normalization excluding air and water |
| Acidity | not more than 0.20 mL of 0.10 N sodium hydroxide is required | 0.04 | Titration of 10 mL with 0.10 N sodium hydroxide to phenolphthalein endpoint |
| Chloride | 0.007% | 0.00003 % | USP <221> |
| Color, Pt-Co | 10 APHA (maximum) | 5 | HOC 0641 |
| Heavy metals | 5 ppm | 0.5 ppm | USP <231> |
| Identification A (Infrared Absorption) | Infrared Absorption 〈197F〉 on undried specimen | Passes test | USP <197F> |
| Iron | 0.50 weight ppm (maximum) | 0.05 ppm | HOC 0290 |
| Limit of Diethylene Glycol | NMT 0.10% | 0.003% | GC, flame ionization detector, 0.53-mm x 30-m fused-silica G43 column, 2,2,2-trichloroethanol internal standard |
| Limit of Ethylene Glycol | NMT 0.10% | 0.002% | GC, flame ionization detector, 0.53-mm x 30-m fused-silica G43 column, 2,2,2-trichloroethanol internal standard |
| Odor | Pass | Passes test | HOC 0610 |
| Refractive index | 1.4310 - 1.4330 | 1.4320 | — |
| Residual solvents | Pass | Passes test | USP <467> |
| Residue on ignition | 0.0070 wt% max (3.5 mg from 50 g) | 0.0005 wt% | Ignition of 50 g, residue moistened with 0.5 mL sulfuric acid and ignited to constant weight |
| Specific gravity | between 1.035 and 1.037 | 1.036 | USP <841> |
| Sulfate | 0.006% | 0.0005 % | USP <221> |
| Suspended matter | Pass | Passes test | HOC 0171 |
| Water | not more than 0.2% | 0.03 % | USP <921> Method I (Karl Fischer) |
| Elemental impurities | Meets USP <232> / ICH Q3D oral limits | Passes test | USP <232> / <233>, ICP-MS |
| Microbial enumeration | TAMC ≤ 100 CFU/g; TYMC ≤ 10 CFU/g | Passes test | USP <61> |
| arsenic | 1 ppm max | 0.02 ppm | — |
| distillation dp | 189 deg C max | 188.2 °C | — |
| distillation dp@760mmhg | 189 degrees C max | 188.2 °C | — |
| distillation ibp | 185 deg C min | 186.8 °C | — |
| distillation ibp@760mmhg | 186 degrees C min | 186.8 °C | — |
| dp | 189 Deg.C max | 188.2 °C | — |
| dpg | 0.1 %m/m max | 0.03 %m/m | — |
| ibp | 185 Deg.C min | 186.8 °C | — |
| pb | 1 mg/kg max | 0.01 ppm | — |
| meg | 0.001 %m/m max | 0.0005 %m/m | — |
| oxidizing substances | 0.2 ml max | 0.03 | — |
| po | 0.001 %m/m max | 0.0002 %m/m | — |
| tpg | 0.03 %m/m max | 0.006 %m/m | — |
| residue | 0.005 % max | < 0.001 % | — |
Los límites de especificación y los resultados del documento fuente se reproducen de la referencia actual del producto utilizada en la ficha técnica. Esta muestra no es un certificado emitido y no identifica un lote analizado. Contacte con Alliance Chemical indicando el producto y el número de lote para obtener documentación específica del lote.