Nonanol solubility

Reported aqueous solubilities of 1-nonanol at various temperatures Stephenson Stuart 1986... 

FIGURE 11.1.1.13.1 Logarithm of mole fraction solubility (In x) versus reciprocal temperature for 1-nonanol. 

The term HYS A, thus, can be assumed to represent the quantity that relates to the effect of the hydrocarbon part on the solubility. The effect is negative, and the magnitude of t is 17.7 erg/cm. The magnitude of OHSA is found to be 59.2 A. As an example, the surface areas of each carbon atom and the hydroxyl group in the molecule 1-nonanol were estimated (Table 3.15). It is seen that the surface area of the terminal methyl group (84.9 A ) is approximately three times larger than the methylene groups (31.82 A, or 31.82 x 1(T ° m ). 

After addition of 4-nonanol (190 pg) as standard, the wine were passed through a solvent washed Amberlite XAD-2 column (1 cm i.d. x 35 cm) with a flow rate of 2.0 ml/min [4]. The column was then rinsed with 100 ml of distilled water to eliminate sugars, acids and other water-soluble compounds. The fractions containing free aroma was eluted by 50 ml of pentane/dichloromethane (2V/1V). The eluate was dried over anhydrous calcium sulfate, eoncentrated to 50 pi under reduced pressure (rotavapor) and then subjected to GC analyses. 

Kerosene, a heavy aromatic naphtha, or petroleum products with a high aromatic content such as Amsco G , Solvesso 100 , etc., have been used as diluents. A small proportion of a long chain alcohol such as tridecanol, or nonanol, is sometimes added also, to increase the solubility, in the case of amine solvents. It is also claimed to improve aqueous-solvent phase separation. 0 T M amine and 2 3 per cent alcohol are typical concentrations. 

As the size of the hydrophobic region increases, solubifity in water decreases. For example, octanol exhibits extremely low solubility in water at room temperature. Alcohols with more than eight carbon atoms, such as nonanol and decanol, are considered to be insoluble in water. 

The magnitude of the surface area of the CH3 group is obviously expected to be larger than the CHj groups. One can estimate the magnitude of TSA of n-decanol it will be (TSA of nonanol + TSA of CHj) 431 + 32 = 463 A. From this value, one can estimate its solubility. 

A wide range of alcohols were oxidized with TOFs ranging from 10 to 100, depending on the solubility of the alcohol in water (since the reaction occurs in the aqueous phase the alcohol must be at least sparingly soluble in water). Thus, in a series of straight-chain secondary alcohols the TOFs deaeased from 100 to 13 on increasing the chain length from 1-pentanol to 1-nonanol. 

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