1. For staining purposes Sudan IV can be made up in propylene glycol . 2. Propylene glycol was once a common ingredient in soft moist cat food.3. The risk is probably low from the inhalation of propylene glycol and glycerin. 4. The dispersants used contain propylene glycol , 2-butoxyethanol, and dioctyl sodium sulfosuccinate. 5. Other ingredients are : propylene glycol , alcohol, herbal extracts, and even some vitamins. 6. It is readily soluble in alcohol solvents, including propylene glycol and dipropylene glycol. 7. Propylene glycol can also be converted from glycerol, a biodiesel byproduct.8. Propylene glycol is used as a de-icing agent for the planes.9. High-dose or prolonged parenterally administered lorazepam is sometimes associated with propylene glycol poisoning. 10. Propylene glycol plays a significant role in the application of a glycol chiller.