Propylene Glycol

CAS 57-55-6
Propylene Glycol
MPG
1 2 Propylene Glycol

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Item		Standard
Appearance		Clear and transparent without mechanical impurities
Color Apha color		≤10
Moisture %		≤0.2
Specific Gravity 25℃		1.035-1.037
Distillation range (L), ℃		185
Distillation range (U), ℃		189
Distillation volume Vol%		≥95
Identification		passed
Acidity ml		≤0.20
Chlorine in CL- mg/kg		1.0
Iron mg/kg		0.50
Chloride ppm		≤70
Sulfate ppm		≤60
Heavy metals ppm		≤5
Residue on ignition Weight %		≤0.007
Organic Volatile impurity Chloroform(μg/g)		≤60
Organic Volatile impurity 1,4-dioxane(μg/g)		≤380
Organic Volatile impurity methylene chloride(μg/g)		≤600
Organic Volatile impurity trichloroethylene(μg/g)		≤80
Dipropylene Glycol %m/m		0.1000
Diethylene glycol %m/m		0.0010
Ethylene glycol %m/m		0.0010
Assay GLC%		≥99.5

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Category: Pharmaceutical material