2-Ethyl-l-hexanol

Chemical Designations - Synortyms 2-Ethyl-l-hexanol 2-Ethylhexyl alcohol Chemical Formula CH3(CH2)3CH(CjHj)CH20H. 

Lipase 1 from Candida rugosa Transesterification 2-ethyl-l-hexanol and rapeseed oil Oil-water (97/3) 99.6 103... 

Chapter 17 - Vapor-liquid equilibrium (VLE) data are important for designing and modeling of process equipments. Since it is not always possible to carry out experiments at all possible temperatures and pressures, generally thermodynamic models based on equations on state are used for estimation of VLE. In this paper, an alternate tool, i.e. the artificial neural network technique has been applied for estimation of VLE for the binary systems viz. tert-butanol+2-ethyl-l-hexanol and n-butanol+2-ethyl-l-hexanol. The temperature range in which these models are valid is 353.2-458.2K at atmospheric pressure. The average absolute deviation for the temperature output was in range 2-3.3% and for the activity coefficient was less than 0.009%. The results were then compared with experimental data. 

In this paper, attempt has been made to use ANN for estimating the VLE for the systems tert-butanol+2-ethyl-l-hexanol and n-butanol+2-ethyl-l-hexanol.In the next section, the theory of ANN has been explained and the type of ANN which is used for estimating the VLE has been defined. In section 3, the data inputs to the network has been shown at atmospheric pressure and in temperature range of 353.2-458.2 K within the results and in section 4, the outputs of ANN has been compared with experimental results. 

The neural network model for the two binary systems viz. tert-butanol+2-ethyl-l-hexanol and n-butanol+2-ethyl-l-hexanol is based on the experimental data reported by Ghanadzadeh et al. [23], The summary of the data is shown in tables 1 and 2. All neural networks take numeric input and produce numeric output. The transformation function of a neuron is typically chosen so that it can accept input in any range, and produce output in a strictly limited range. Although the input can be in any range, there is a saturation effect so that the unit is only sensitive to inputs within a fairly limited range. Numeric values have to be scaled into a range that is appropriate for the network. 

Figure 4. Boiling temperature diagram (T) for the system of 2-ethyl-l-hexanol + TBA. 

Vang, O., Wallin, H., Doehmer, J. Autrup, H. (1993) Cytochrome P450-mediated metabolism of tumour promoters modifies the inhibition of intercellular cormnunication a modified assay for tumour promotion. Carcinogenesis, 14, 2365-2371 Verschueren, K. (1996) Handbook of Environmental Data on Organic Chemicals, 3rd Ed., New York, Van Nostrand Reinhold, pp. 866-873 Vitali, M., Leoni, V, Chiavarini, S. Cremisini, C. (1993) Determination of 2-ethyl-l-hexanol as contaminant in drinking water. J. Assoc, off anal. Chem. int., 76, 1133-1137... 

Problem 17.31 Use aldol condensations to synthesize the following useful compounds from cheap and readily available compounds (a) the food preservative sorbic acid, CHjCH=CH—CH==CH—COOH (fe) 2-ethyl-l-hexanol (c) 2-ethyl-l,3-hexanediol, an insect repellant (d) the humectant pentaerythritol, CCCHjOHjo. ... 

Ethyl-l-hexanol [104-76-7J M 130.2, b 184.3", d 0.833, n 1.431. Dried with sodium, then fractionally distd. 

The carbon skeleton of 2-ethyl-1-hexanol is the same as that of the aldol condensation product derived from butanal. Hydrogenation of this compound under conditions in which both the carbon-carbon double bond and the carbonyl group are reduced gives 2-ethyl-l-hexanol. 

Storage rooms Alcohol 2-Propanol 2-Ethyl-l -hexanol... 

Scheme 13.4 Hydrolysis of diethylhexylphthalate to form 2-ethyl-l-hexanol.

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