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1,3-Propanediol

Trimethylene glycol | NFPA-H = 2 | NFPA-F = 2 | NFPA-R = 0

1,3-Propanediol is the organic compound with the formula . This 3-carbon diol is a colorless viscous liquid that is miscible with water.

Products

It is mainly used as a building block in the production of polymers such as polytrimethylene terephthalate.

1,3-Propanediol can be formulated into a variety of industrial products including composites, adhesives, laminates, coatings, moldings, aliphatic polyesters, and copolyesters. It is also a common solvent. It is used as an antifreeze and as a component in wood paint.

Production

1,3-Propanediol is mainly produced by the hydration of acrolein. An alternative route involves the hydroformylation of ethylene oxide to form 3-hydroxypropionaldehyde. The aldehyde is subsequently hydrogenated to give 1,3-propanediol. Biotechnological routes are also known.

Two other routes involve bioprocessing by certain micro-organisms:

  • Conversion from glucose effected by a genetically modified strain of E. coli by DuPont Tate & Lyle BioProducts (See: bioseparation of 1,3-propanediol). An estimated 120,000 tons were produced in 2007". According to DuPont, the Bio-PDO process uses 40% less energy than conventional processes, Because of DuPont and Tate & Lyle's success in developing a renewable Bio-PDO process, the American Chemical Society awarded the Bio-PDO research teams the "2007 Heroes of Chemistry" award.
  • Conversion from glycerol (a by-product of biodiesel production) using Clostridium diolis bacteria and Enterobacteriaceae.

Safety

1,3-Propanediol does not appear to pose a significant hazard via inhalation of either the vapor or a vapor/aerosol mixture.

References

References

  1. {{pubchem. 10442. 1,3-Propanediol
  2. (2018). "Propanediols".
  3. (2008-07-15). "Alcohols, Polyhydric". Wiley-VCH Verlag GmbH & Co. KGaA.
  4. (2005-05-11). "Biobased 1,3-Propanediol A New Platform Chemical For The 21st Century". BREW Symposium.
  5. (2007-06-12). "Growing Demand for Products Manufactured from DuPont's Bio-Based Propanediol". AZoM.com.
  6. H. Biebl. (1999). "Microbial production of 1,3-propanediol". Applied Microbiology and Biotechnology.
  7. (2005). "Inhalation toxicity of 1,3-propanediol in the rat". [[Inhal Toxicol]].
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