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Propylene glycol USP

Propylene glycol USP

Product Details:

  • Chemical Name Propylene glycol
  • Type PVC Solvent
  • Physical State Liquid Coating
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Propylene glycol USP Product Specifications

  • Propylene glycol
  • PVC Solvent
  • Liquid Coating

Product Description

Propylene glycol (IUPAC name: propane-1,2-diol) is a synthetic organic compound with the chemical formula C3H8O2. It is a viscous, colorless liquid which is nearly odorless but possesses a faintly sweet taste. Chemically it is classed as a diol and is miscible with a broad range of solvents, including water, acetone, and chloroform.

It is produced on a large scale and is primarily used in the production of polymers, but also sees use in food processing, and as a process fluid in low-temperature heat-exchange applications. In the European Union, it has the E-number E1520 for food applications.

Industrially, propylene glycol is produced from propylene oxide[7] (for food-grade use), and global capacity in 1990 was 900,000 tonnes per year.[8]Different manufacturers use either non-catalytic high-temperature process at 200oC (392oF) to 220oC (428oF), or a catalytic method, which proceeds at 150 C (302oF) to 180oC (356oF) in the presence of ion exchange resin or a small amount of sulfuric acid or alkali.

1,2-Propandiol Synthesis V1.svg

Final products contain 20% propylene glycol, 1.5% of dipropylene glycol and small amounts of other polypropylene glycols.[9] Further purification produces finished industrial grade or USP/JP/EP/BP grade propylene glycol that is typically 99.5% or greater.


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