Dodecylphenol ethoxylates

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]. 

Dodecylphenol ethoxylates. See Dodoxynol Dodecylphosphate, potassium salt. See Potassium lauryl phosphate... 

Dodecyloxy) ethanol. See Laureth-1 2-[2-(Dodecyloxy) ethoxy] ethanol. See Laureth-2 2-[2-[2-(Dodecyloxy) ethoxy] ethoxy] ethanol. See Laureth-3 2,2 -[2-(Dodecyloxy)ethyl]imino]bisethanol. See TEA-lauryl ether Dodecylphenol ethoxylates. See Dodoxynol... 

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

Surfactants elimination via bile is faster in fed than in unfed fish [12,40], due to the higher secretion of bile into the digestive tract when fed. The fastest and slowest surfactants excreted were the linear alkylbenzene sulphonates (C12) and the alkyl sulphates (especially the C12-15) [12], respectively. Depuration of NP is quite rapid, 1.8-20 days in fathead minnows [32] and 4 days in the Atlantic salmon [41]. Within the same organism, differences in tissues were observed, with values of 20 h for adipose tissue and 18.5 h for muscle of rainbow trout [24]. The elimination rate of non-ionic surfactants is directly proportional to the ethoxylate unit number and inversely proportional to the alkyl chain length [33]. Average elimination rates (k2) of NPE02.8 and NP in clams were 1.8 and 1.4 per day, respectively [21], and decreasing k2 values from 0.19 to 0.001 per day were obtained from butylphenol to dodecylphenol in salmon [42]. 

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]. 

Chem. Descrip. Org. phosphate ester of ethoxylated dodecylphenol, free acid Ionic Nature Anionic CAS 39464-67-0... 

Dodecylphenol 6-mole ethoxylate separation by ethoxy chain length incomplete resolution NPE, E = 4 to 10 separation of homologs up to E = 18 Dodecylphenol 6-mole ethoxylate, NPE5, NPE6 collaborative study... 

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