Propylene Glycol
Name:1,2-Propylene glycol
Molecular formula: C3H8O2
Relative Molecular weight:76.09
CAS No.: 57-55-6
Propylene Glycol Technical grade：
| Item |
Index |
| Color, (APHA) |
≤10 |
| Content, % |
≥99.0 |
| Moisture, % |
≤0.2 |
| Specific gravity (20/20) |
1.035-1.039 |
| Free acid, (As CH3OOH), ppm |
≤75 |
| Residue, ppm |
≤80 |
| Distillation rang＞95%,（Vol） |
184-190 |
| Index of retraction（n20D） |
1.433-1.435 |
Propylene Glycol Pharmaceutical grade：
| Item |
Index |
| Color Tone (APHA) |
10 max |
| Water,% |
0.2 max |
| Specific gravity (20/25 ℃) |
1.0350~1.0410 |
| Refractive index(25℃) |
1.4307~1.4317 |
| Distillation range (L), ℃ |
184.0~189.0 |
| Distillation range (U),℃ |
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, % |
0.07 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 |
Packing:
Packed in galvanized iron drums, net weight 200Kg/drum. Or packed in IBC drums, flexi bag or according to the clients' requirement
Storage and transportation:
Propylene Glycol is combustible. If coming into contact with oxidization it will burn. It should be stored in a cool and windy special warehouse far from fire and transported as a combustible chemical product.
Applications of MPG:
Pharmaceutical industry: Propylene Glycol is used as the carrier of medicine and the agent for particle medicine.
Food industry: Propylene Glycol is used as solvent of perfume and edible pigment, emollient in food packing, and anti-adhesive,
Cosmetic industry: Propylene Glycol is used as humidor, emollient and solvent.
Tobacco industry: Propylene Glycol is used as tobacco flavor, lubricated solvent, and preservative.
Other fields: Propylene Glycol can be used as the raw material of non-saturated alkyd resin, plasticizer, dehydration, surface active agent, solidification agent, and cohesive agent.
Propylene Glycol is also used in paint industry, pesticide industry and dope industry etc.
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