Dodecyl phenol

DODECYL PHENOL or DODECYL PHENOL, MIXED ISOMERS... 

Dodecyl phenol Dodecylphenol Dodecylphenol (mixed isomers) Dodecylphenols EINECS 248-312-8 HSDB 386 NSC 6812 Phenol, dodecyl- Phenol, dodecyl-, mixed isomers T-Det, Mixture of 0, m and p-isomers. 

Figure 3.1 TGA weight loss plotted against temperature (a) p-dodecyl-phenol-formaldehyde resin, (b) phenol-formaldehyde resin. Source Author s own files...

The most widely used alkylphenols in the manufacture of nonionic surfactants are described as follows in the order of their importance. APEs derived from p-nonylphenol account approximately 80% of the total market whereas those derived from octyl phenol account for 15-20%. Dodecyl phenol, di-nonylphenol, and DSBP ethoxylates run a poor third at <5%. 

Alkylphenol p-dodecyl phenol is the product of a mixture of branched-chain, 12-carbon-containing olefins, and phenol yielding the general structure as shown in Structure 3.14. Although the major use of PDDP is in lube-oil additives (primarily through its conversion to a calcium phenolate), a minor, higher purity portion is ethoxylated to produce specialty surfactants. 

The chemical composition of either olefins is an extremely complex mixtnre of predominately 9 or 12 carbon atom olefins, respectively. Indeed, high-resolution gas chromatographic analysis of p-nonylphenol has achieved resolution of 22 distinct para isomers, each alkene moiety identified as being a distinct and different configuration of the compound described for simplicity as propylene trimer or nonene. Although such an exhaustive study has not yet been condncted on p-dodecyl phenol, results would be expected to be at least as, if not more, complex. 

Mo-dithiophosphates and Mo-dithiocarbamates Reaction product of sulfurized dodecyl phenol and alkylbenzene sulfonic acid... 

The second largest use of ethylene oxide is in the production of nonionic and anionic surfactants. These fall into two broad classes. One is ethoxylates of alkylphenols, principally nonyl phenol and, to a lesser extent, dodecyl phenol. These... 

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