How is polypropylene glycol made?
Polypropylene glycol is produced by ring-opening polymerization of propylene oxide. The initiator is an alcohol and the catalyst a base, usually potassium hydroxide. When the initiator is ethylene glycol or water the polymer is linear. Conventional polymerization of propylene oxide results in an atactic polymer.
What is the chemical structure of propylene glycol?
Propylene glycol (IUPAC name: propane-1,2-diol) is a viscous, colorless liquid, which is nearly odorless but possesses a faintly sweet taste. Its chemical formula is CH3CH(OH)CH2OH. Containing two alcohol groups, it is classed as a diol.
Is propylene glycol and polypropylene glycol the same?
Abstract: Propylene Glycol is an aliphatic alcohol manufactured as a reaction product of propylene oxide and water. Polypropylene Glycol is a polymer formed by adding propylene oxide to dipropylene glycol.
What is propylene glycol used for?
It is used to absorb extra water and maintain moisture in certain medicines, cosmetics, or food products. It is a solvent for food colors and flavors, and in the paint and plastics industries. Propylene glycol is also used to create artificial smoke or fog used in fire-fighting training and in theatrical productions.
What is poly propylene glycol used for?
Polypropylene glycols are liquids, mostly insoluble in water, used to suppress foaming in industrial processes and for making polyurethane resins, hydraulic fluids, and various other materials.
What is structure of glycol?
C2H6O2
Ethylene glycol/Formula
What is polypropylene glycol used for?
What is difference between polypropylene and propylene?
Main Difference – Propylene vs Polypropylene Propylene is an organic compound and a hydrocarbon. Polypropylene is produced from propylene monomer polymerization. The main difference between propylene and polypropylene is that propylene is a simple molecule whereas polypropylene is a giant macromolecule.
What propylene glycol is used for?
What is propylene used for?
Propylene is used mainly to produce polypropylene plastics for injection molding and fibers and for manufacturing cumene (used in phenol production). Propylene is also used to make propylene oxide, acrylic acid, oxo alcohols and isopropanol.
What is the structural formula of propylene glycol?
The formula of the chemical compound Propylene glycol is C3H8O2
What are the properties of propylene glycol?
The properties of propylene glycol are similar to those of ethylene glycol (monoethylene glycol, or MEG). Propylene glycol is miscible with water and various organic solvents such as ethanol, ether, acetone , and chloroform. Moreover, it is hygroscopic, that is, it readily absorbs water from the surrounding air.
What is boiling point of polypropylene glycol?
According to the Material Safety Data Sheet (MSDS) for propylene glycol, it’s a colorless liquid with a slightly sweet taste and is notably more viscous than water, meaning that it flows slowly, like syrup. Its melting point is -72.4 degrees F, and its boiling point is 370.8 degrees F.
What is the flash point of propylene glycol?
Auto Ignition : while propylene glycol has a high auto-ignition temperature, its relatively low flash point of 220° F (104° C) limits the upper temperature range in many applications to 175° F (80° C)