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Item | Index | |
High Grade | First Grade | |
Content | 99.50 % min | 99.00 % min |
Moisture | 0.20 % max | 0.20 % max |
Density d2020 | 1.035-1.041 | 1.035-1.041 |
Refractive index (25°C) | 1.431-1.435 | 1.426-1.435 |
Distillation range, IBP | 184.0 °C min | 183.0 °C min |
Distillation range, DP | 189.0 °C max | 190.0 °C max |
IR test | pass | -- |
Alkalinity | 0.0020 % max | 0.01 % max |
Chloride | 0.007 % max | -- |
Sulphate | 0.006 % max | -- |
Heavy metal | 5 ppm max | -- |
Residue on ignition | 0.0070 % max | -- |
Oxidizing substance | Not required | -- |
Reducing matter | Not required | -- |
Organic volatile matter-chloroform | 60 ppm max | -- |
Organic volatile matter-dioxane | 380 ppm max | -- |
Organic volatile matter-methylene chloride | 600 ppm max | -- |
Organic volatile matter-trichloroethylene | 80 ppm max | -- |
Color (Pt-Co) | 10 max | 16 max |
Appearance | Colorless, Viscous, transparent liquid | |
Propylene Glycol Cas 57-55-6 (PG) 99.9%min