1,3,5-Trimethylbenzene
Abstract: By studying and calculating state variables from equations of state, such as the Peng-Robinson equation, the Clausius-Clapeyron equation, and the Antoine equation, one can see its dependence on thermodynamic properties of 1,3,5-Trimethylbenzene. After researching critical, triple, and melting point properties, other constants, and enthalpies of sublimation, fusion, and vaporization, many quantities were able to be calculated. The programs used to solve for these quantities were the Peng-Robinson Solver and Excel. These programs allowed for the calculations and comparisons of enthalpy versus temperature, specific heat versus temperature, the Joule-Thompson Coefficient versus temperature, pressure verses temperature, and pressure versus. molar volume. Having isotherms and isobars in these calculations allowed for the clear depiction of the relationship between two different variables and to see how the chemical compound 1,3,5-Trimethylbenzene, or Mesitylene, behaves thermodynamically.
Introduction:
1,3,5-Trimethylbenzene (1,3,5-TMB) is a hydrocarbon commonly known as Mesitylene, Symmetrical trimethylbenzene, or sym-trimethylbenzene. Mesitylene is an organic synthetic, or man-made, liquid that is clear and colorless with a distinctive, aromatic, and pleasant odor. Its molecular weight is 120.2 grams per mole and the molecular formula is C6H3(CH3)3 (“CDC” 1). This chemical compound has three methyl substituents connected to positions one, two, and three around a benzene ring made of six carbons (see Figure 1) (Helmenstine 1). There are three different isomers of trimethylbenzene. The first one is 1,2,3 and is called Hemellitol, the second one is 1,2,4- and is named Pseudocumene, and the last one is the 1,3,5-isomer discussed in this report (“Mesitylene” 1). The melting point of 1,3,5-TMB is -45 degrees C and the boiling point is 164.5 degrees C. The density of this compound is 0.864 g/cm3 (“WolframAlpha” 1). It is insoluble in water, however, it is
Introduction:
1,3,5-Trimethylbenzene (1,3,5-TMB) is a hydrocarbon commonly known as Mesitylene, Symmetrical trimethylbenzene, or sym-trimethylbenzene. Mesitylene is an organic synthetic, or man-made, liquid that is clear and colorless with a distinctive, aromatic, and pleasant odor. Its molecular weight is 120.2 grams per mole and the molecular formula is C6H3(CH3)3 (“CDC” 1). This chemical compound has three methyl substituents connected to positions one, two, and three around a benzene ring made of six carbons (see Figure 1) (Helmenstine 1). There are three different isomers of trimethylbenzene. The first one is 1,2,3 and is called Hemellitol, the second one is 1,2,4- and is named Pseudocumene, and the last one is the 1,3,5-isomer discussed in this report (“Mesitylene” 1). The melting point of 1,3,5-TMB is -45 degrees C and the boiling point is 164.5 degrees C. The density of this compound is 0.864 g/cm3 (“WolframAlpha” 1). It is insoluble in water, however, it is
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