Name:Propylene Glycol 1,2-Propanediol
CAS No:57-55-6
Appearence:Colorless transparent LiquidPurity: 99.5%minThe detailed specifications are as below:
| Index | Pharmaceutical grade | Industrial excellent grade | Industrial first grade |
| Appearance | colorless transparent viscous liquid | colorless transparent viscous liquid | colorless transparent viscous liquid |
| Content | 99.5 % min | 99.5 % min | 99.0% min |
| Chroma(platinum-cobalt) | 10 max | 10 max | 16 max |
| Density (20/25 °C) | 1.0350~1.4010 | 1.0350~1.4010 | 1.0350~1.4010 |
| Refractive index(25°C) | 1.4307~1.4317 | 1.431~1.435 | 1.426~1.435 |
| Boiling range, IBP | 184.0 °C min | 184.0 °C min | 183.0 °C min |
| Boiling range, DP | 189.0 °C max | 190.0 °C max | 190.0 °C max |
| IR test | passed | — | — |
| Moisture | 0.2 wt% max | 0.1 wt% max | 0.2% max |
| Basicity | 0.0020 wt% max | 0.0020 wt% | 0.01% max |
| Chloride | 0.007 wt% max | — | — |
| Sulfate | 0.006 wt% max | — | — |
| Heavy metal | 5 ppm max | — | — |
| Ignition residue | 0.0070 wt% max | — | — |
| Oxidizing substance | Not required | — | — |
| Reduction material | Not required | — | — |
| Organic volatiles -trichloromethane | 60 ppm max | — | — |
| Organic volatiles -dioxane | 380 ppm max | — | — |
| Organic volatiles – dichloromethane | 600 ppm max | — | — |
| Organic volatiles -trichloroethylene | 80 ppm max | — | — |