Polyoxymethylene dimethyl ethers

Polyoxymethylene dimethyl ethers
Identifiers
ChemSpider	none;
Properties
Chemical formula	H3CO(CH2O)nCH3
Molar mass	Variable
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
	Infobox references

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.

References

Arvidson M., Fakley M.E., Spencer M.S. (1987). "Lithium halide-assisted formation of polyoxymethylene dimethyl ethers from dimethoxymethane and formaldehyde". Journal of Molecular Catalysis. 41 (3): 391–393. doi:10.1016/0304-5102(87)80118-9.CS1 maint: multiple names: authors list (link)
Qi Zhao; Hui Wang; Zhang-feng Qin; Zhi-wei Wu; Jian-bing Wu; Wei-bin Fan; Jian-guo Wang (2011). "Synthesis of polyoxymethylene dimethyl ethers from methanol and trioxymethylene with molecular sieves as catalysts". Journal of Fuel Chemistry and Technology. 39 (12): 918–923. doi:10.1016/S1872-5813(12)60003-6.
Pellegrini, L., Marchionna, M., Patrini, R., and Florio, S. (2013). "Emission Performance of Neat and Blended Polyoxymethylene Dimethyl Ethers in an Old Light-Duty Diesel Car". SAE Technical Paper Series. SAE Technical Paper 2013-01-1035. 1. doi:10.4271/2013-01-1035.CS1 maint: multiple names: authors list (link)

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[1] Arvidson M., Fakley M.E., Spencer M.S. (1987). "Lithium halide-assisted formation of polyoxymethylene dimethyl ethers from dimethoxymethane and formaldehyde". Journal of Molecular Catalysis. 41 (3): 391–393. doi:10.1016/0304-5102(87)80118-9.CS1 maint: multiple names: authors list (link)

[2] Qi Zhao; Hui Wang; Zhang-feng Qin; Zhi-wei Wu; Jian-bing Wu; Wei-bin Fan; Jian-guo Wang (2011). "Synthesis of polyoxymethylene dimethyl ethers from methanol and trioxymethylene with molecular sieves as catalysts". Journal of Fuel Chemistry and Technology. 39 (12): 918–923. doi:10.1016/S1872-5813(12)60003-6.

[3] Pellegrini, L., Marchionna, M., Patrini, R., and Florio, S. (2013). "Emission Performance of Neat and Blended Polyoxymethylene Dimethyl Ethers in an Old Light-Duty Diesel Car". SAE Technical Paper Series. SAE Technical Paper 2013-01-1035. 1. doi:10.4271/2013-01-1035.CS1 maint: multiple names: authors list (link)