3,3'-methylenebis[5-methyloxazolidine]

3,3'-methylenebis[5-methyloxazolidine], abbreviated as MBO, is an oil-soluble broad-spectrum biocide. Pure MBO (MBO 100%) is effective in controlling microbial growth and the formation of interfacial biofilms at a concentration of 500 ppm (active ingredient). Its 50% formulation is commonly used as a multifunctional fuel additive. MBO neutralises the organic acids produced by microbial metabolism; this property helps to maintain a stable pH in the system and reduces the damage caused by acidic by-products to fuel and equipment [1–2].

[1] Bücker, F., Barbosa, C. S., Quadros, P. D., Bueno, M. K., Fiori, P., te Huang, C., Frazzon, A. P. G., Ferrão, M. F., de Oliveira Camargo, F. A., Bento, F. M. (2014). Fuel biodegradation and molecular characterization of microbial biofilms in stored diesel/biodiesel blend B10 and the effect of biocide. International Biodeterioration & Biodegradation, 95, Pages 346-355. https://doi.org/10.1016/j.ibiod.2014.05.030
[2] Zimmer, A. R., Oliboni, A., Viscardi, S. L. C., Teixeira, R. M., Ferrão, M., Bento, F. (2017). Biodiesel blend (B10) treated with a multifunctional additive (biocide) under simulated stored conditions: a field and lab scale monitoring. 0. https://doi.org/10.18331/BRJ2017.4.2.7