Polyoxymethylene dimethyl ethers explained

Polyoxymethylene dimethyl ethers (PODE or DMMn) are a class of chemical compounds with the molecular formula H3CO(CH2O)nCH3 where n is typically about 3 to 8.

PODE can be produced from methylal and formaldehyde or a formaldehyde equivalent such as paraformaldehyde[1] or trioxane.[2]

PODE is used as a diesel fuel additive[3] and as a solvent.

Notes and References

  1. 10.1016/0304-5102(87)80118-9 . 41 . 3 . Lithium halide-assisted formation of polyoxymethylene dimethyl ethers from dimethoxymethane and formaldehyde . 1987 . Journal of Molecular Catalysis . 391–393 . Arvidson M., Fakley M.E., Spencer M.S..
  2. Journal of Fuel Chemistry and Technology . 39 . 12 . 2011 . 918–923 . Synthesis of polyoxymethylene dimethyl ethers from methanol and trioxymethylene with molecular sieves as catalysts . Qi Zhao . Hui Wang . Zhang-feng Qin . Zhi-wei Wu . Jian-bing Wu . Wei-bin Fan . Jian-guo Wang . 10.1016/S1872-5813(12)60003-6.
  3. Book: Pellegrini, L., Marchionna, M., Patrini, R., and Florio, S. . SAE Technical Paper Series . 1 . SAE Technical Paper 2013-01-1035 . 2013 . 10.4271/2013-01-1035. Emission Performance of Neat and Blended Polyoxymethylene Dimethyl Ethers in an Old Light-Duty Diesel Car .

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