Propylene Glycol Pharma Grade
| ITEM | STANDARD |
| Color(APHA) | 10max |
| Moisture% | 0.2max |
| Specific Gravity | 1.035-1.037 |
| Refractive index | 1.4307-1.4317 |
| Distillation range (L),℃ | 184-189 |
| Distillation range (U),℃ | 184-189 |
| Distillation volume | 95min |
| Identification | passed |
| Acidity | 0.20max |
| Chloride | 0.007max |
| Sulfate | 0.006max |
| Heavy metals | 5max |
| Residue on ignition | 0.007max |
| Organic Volatile impurity Chloroform(µg/g) | 60max |
| Organic Volatile impurity 1.4 dioxane(µg/g) | 380max |
| Organic Voltile impurity methylene chloride(µg/g) | 600max |
| Organic Voltile impurity trichloroethylene(µg/g) | 80max |
| Assay | 99.5min |
| Color(APHA) | 10max |
| Moisture% | 0.2max |
| Specific Gravity | 1.035-1.037 |
Propylene glycol Tech Grade
| ITEM | STANDARD |
| Color | =<10 |
| Content (Weight %) | >=99.0 |
| Moisture(Weight %) | =<0.2 |
| Specific Gravity (25℃ ) | 1.035-1.039 |
| Free Acid (CH3COOH) ppm) | =<75 |
| Residue(ppm) | =<80 |
| Distallation rang | 184-189 |
| Index of refraction | 1.433-1.435 |
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