Q:

From what is propylene glycol made?

A:

Propylene glycol is manufactured from glycerin or petroleum. Glycerin is a coproduct that is produced when biodiesel and fatty acids are being made, and propylene glycol can be derived from it. On the other hand, there are ways to get propylene glycol from petroleum as well.

Propylene glycol is also known as 1,2-propanediol or propane-1,2-diol. In science, it is recognized as an organic compound and has the chemical formula C3H8O2. It could be difficult for humans to recognize propylene glycol if they are not familiar with the substance, since it is nearly odorless, colorless, clear, hygroscopic and miscible with acetone, chloroform and water. Its main defining feature is its viscosity, which leaves it denser than water. It is typically used as chemical feedstock for the production of unsaturated polyester resin.

At ADM, their propylene glycol is derived from glycerin. They claim that their propylene glycol meets the same specifications as the propylene glycol that comes from petroleum. The difference is that the glycerin-derived PG is made up of 100 percent biobased carbon content. In traditional manufacturing, it would be normal to see PG made from a petrochemical intermediate with no biobased content, according to ADM.

Functionally, both types of propylene glycol work the same. Their molecular structures are the same, making both types identical chemically.


Is this answer helpful?

Similar Questions

  • Q:

    What is glycol made of?

    A:

    A glycol molecule is made of two hydroxy (OH) groups and carbon atoms of varying sizes and structures. It belongs to an alcohol family of organic compounds. The most basic of glycol compounds is ethylene glycol. Ethylene glycol, which has the molecular formula HOCH2CH2OH, is also known as a 1,2-ethanediol.

    Full Answer >
    Filed Under:
  • Q:

    Is glycerin flammable?

    A:

    Glycerin is a flammable substance. Unlike many other substances, its flammability rating stands at a 1, which makes it very likely to not become ignited.

    Full Answer >
    Filed Under:
  • Q:

    What is the viscosity of ethylene glycol?

    A:

    At 68 degrees Fahrenheit, the viscosity of ethylene glycol is 16.9 centipoise, nearly 17 times that of water. However, if it is heated to 140 degrees Fahrenheit, its viscosity drops to 5.2 centipoise. Viscosity is the measure of a substance's resistance to flow.

    Full Answer >
    Filed Under:
  • Q:

    What is tin(II) oxide?

    A:

    Tin(II) oxide is compound made of one atom of tin and one atom of oxygen, as represented by the chemical formula SnO. It appears as either a blue-black solid or a red solid, depending on the production method.

    Full Answer >
    Filed Under:

Explore