Propylene glycol (PG)
[57-55-6] Molecular formula: C3H8O2
Item: Index
Color Tone (APHA): 10 max
Water, %: 0.2 max
Specific gravity (20/25 C): 1.0350~1.4010
Refractive index(25C): 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,: 60 max
Organic Volatile impurity 1.4 dioxane,: 380 max
Organic Voltile impurity methylene chloride, 600 max
Organic Voltile impurity trichloroethylene, 80max
Assay, GLC%: 99.5 min