Phenols 4-dodecylphenol

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. 

The major use of technical grade 4-dodecylphenol is in lube oil additives. 4-Dodecylphenol is converted to a calcium phenolate [50910-68-4] and... 

These were probably the first ethoxylates produced in large quantities and were important from the mid- 1940s. They were largely based on nonylphenol with much smaller quantities of octyl and dodecylphenol derivatives. The first mole of ethylene oxide adds with relative ease to the alkyl phenol and then additional moles of ethylene oxide add to produce a Poisson distribution certainly up to the 10-mol derivative [8, 9]. 

The alkylphenols behave in the same manner as fatty alcohols. The nonyl (or octyl) phenol is widely used with 8 to 12 molecules of ethylene oxide. Nonylphenol is completely soluble in water at room temperature and exhibits excellent detergency. Dodecylphenol ethoxylate is used in certain agriculture emulsifiers and dinonylphenol as low or nonfoaming ingredients of household washing machine powders [3, 4]. 

Mainly POE p-nony I phenol, p-octylphenol, or p-dodecylphenol (sometimes, dinon-ylphenol), derived from disobutylene, propylene trimer, or propylene tetramer. 

Calcium salt of thiobis(C12-alkylated phenol) Calcium thiobis(dodecylphenolate) EINECS 248-159-7 Phenol, thiobisjdodecyl-, calcium salt (1 1). 

Organic sulphonic acids can be used instead of sulphuric acid. For example, phenol and a propene polymer having 9-24 C atoms react in the presence of 4-methylbenzenesulphonic acid monohydrate at 80-150°C to produce an 81.7% yield of 4-nonylphenol. 4-Dodecylphenol is obtained similarly (ref.11). 

In addition, phenols and naphthols are oxyalkylated to give products with varying units of either ethylene oxide or propylene oxide. The compositions are commercially available as nonionic detergents. An interesting property of dodecylphenol condensed with 6 moles of ethylene oxide is that it has a negative temperature coefficient of solubility in water, i.e., becomes less soluble at higher temperatures. 

The most important applications for phenol are phenolic resins and the production of caprolactam and bisphenol A. Smaller amounts of phenol are used in the production of adipic acid, nonylphenol, acetylsalicylic add, dodecylphenol, chlorophenols and xylenols. 

The most important commercial alkylphenols are the methyl derivatives (the cre-sols and xylenols), butylated phenols, predominantly tertiary butylphenols, and phenols with long alkyl chains, for example nonylphenol and dodecylphenol. The latter are commonly used in the production of surfactants. 

Dodecylphenol, in the form of its calcium or magnesium sulfonate, is used as an additive for lubricants. It is produced by the reaction of phenol with propylene tetramer in the molar ratio 3 1 at a temperature of 100 °C on ion-exchange resins. West European production in 1985 was around 20,000t. 

Alkylation of phenol with dodecene (propylene tetramer) produces 4-dodecylphenol. It is most commonly used in the manufacture of compounds for a wide variety of lube-oil additives but also of specialty surfactants and demulsifiers. It is available in liquid form and generally sold in 55 gallon drums, bulk shipments of 5000 gallon tank wagons, or up to 25,0(X) gallon railcars [1, p. 133 2] (Structure 3.5). 

About 45% of phenol is used as a feedstock to produce bisphenol A. Another 30% is used to produce phenolic resins. An additional 10% is used to make caprolactam. About 2% is used to produce aniline. Phenol is used as a feedstock to produce alkyl-phenols such as /hnonylphenol and p-dodecylphenol. In addition, it is used to make xylenols as well as adipic acid and salicylic acid. Phenol is used in the synthesis of various dyes and biocides. 

Synonyms Dodecylphenol ethoxylates Classification Ethoxylated alkyl phenol Ionic Nature Nonionic... 

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