The chemical ionization mass spectra of some tert‐octylphenol ethoxylates and linear alcohol ethoxylates have been determined using methane and ammonia as reactant gases. Proton, [C2H5]+ and [C3H5]+ adducts were observed with attachment on the ring as well as on the oxyethylene chain for the tertiary octylphenol ethoxylates. Proton and [NH4]+ addition reactions were also observed. Alkyl ion and olefin displacement reactions were also important fragmentations. Hydride abstraction and proton, [C2H5]+, [C3H5]+ and [NH4]+ attachment were the most important reactions occurring for the linear alcohol ethoxylates.
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Euripides G. Stephanou (1984) studied this question.
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