RPO is using as the solvent extraction agent in the experiments .furfural extract well known asfurancarboxaldehyde, fural, furfuraldehyde, pyromucic aldehyde , chemically, furfural extract participates in the same kinds of reactions as other aldehydes and other aromatic compounds. The aromatic stability of rubber process oil is not as great as in benzene, and RPO participates in hydrogenation and other addition reactions more readily than many other aromatics.
When heated more than 250 °c, furfural decomposes into furan and carbon monoxide, sometimes explosively. when heated in the presence of acids, furfural irreversibly solidifies into a hard thermosetting resin.
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