Propylene Glycol / Mono Propylene Glycol
Structural formula:C3H8O2
Relative Molecular weight : 76.09
CAS No.: 57-55-6
Application of propylene glycol
Anti-freezen: PG is one of the most important raw material of antifreeze.
Cosmetic: PG could be used as humidor, emollient and solvent in cosmetic and industry.
Pharmacy: PG is used as the carrier of medicine and agent for particle medicine.
Food: PG is used as solvent of perfume and edible pigment,emollient in food packing,and anti-adhesive.
Solvent: PG is used as solvent in resin, detergent, painting, pesticide and dope industry, etc
Propylene glyclo pharma grade specification
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Item
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Index
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Color Tone (APHA)
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10 max
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Water,%
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0.2 max
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Specific gravity (20/25 °C)
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1.0350~1.0410
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Refractive index(25°C)
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1.4307~1.4317
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Distillation range (L), °C
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184.0~189.0
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Distillation range (U),°C
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184.0~189.0
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Distillation volume, Vol%
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95 min
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Identification
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passed
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Acidity, ml
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0.20 max
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Chloride, %
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0.007 max
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Sulfate, %
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0.006 max
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Heavy metals, ppm
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5 max
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Residue on ignition, %
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0.07 max
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Organic Volatile impurity Chloroform, µg/g
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60 max
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Organic Volatile impurity 1.4 dioxane, µg/g
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380 max
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Organic Voltile impurity methylene chloride,µg/g
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600 max
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Organic Voltile impurity trichloroethylene, µg/g
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80max
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Assay, GLC%
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99.8 min
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Packing:In 215kgs galvanized iron drums,17.2tons/20'fcl.
In flexitank, 23tons/20'fcl.
In IBC drums, 20tons/20'fcl.
In ISO tank, 23 tons/20'fcl.
Prve: Maleic Anhydride
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