Propylene glycol

Key Attributes.

Product name: Propylene glycol Molecular formula: C3H8O2 CAS No.: 57-55-6 Propylene Glycol Pharma Grade Item Index Color Tone (APHA) 10 max Water,% 0.2 max Specific gravity (20/25 °C) 1.0350~1.4010 Refractive index(25°C) 1.4307~1.4317 Distillation range (L), °C 184.0~189.0 Distillation range (U),°C 184.0~189.0 Distillation volume, Vol% 95 min Identification passed Acidity, ml 0.20 max Chloride, % 0.007 max Sulfate, % 0.006 max Heavy metals, ppm 5 max Residue on ignition, % 0.007 max Organic Volatile impurity Chloroform, µg/g 60 max Organic Volatile impurity 1.4 dioxane, µg/g 380 max Organic Voltile impurity methylene chloride,µg/g 600 max Organic Voltile impurity trichloroethylene, µg/g 80max Assay, GLC% 99.5 min