Solubility Determination of Hydroquinone in Dichloromethane, Trichloromethane and Carbon Tetrachloride by Using the Co-solvent Calibration Method

Abstract

In this report, the solubility of hydroquinone (1,4-dihydroxybenzene) was determined in dichloromethane, trichloromethane and carbon tetrachloride at 298 K by using cyclic voltammetry. By the proposed cosolvent calibration method a mixed solvent was used for the determination of solubility where acetonitrile was the co-solvent. The molar ratios of the two solvents were uniform during the whole procedure both in the calibration solutions and in solutions used for solubility determinations. The solubility of hydroquinone decreased by the decrease of solvent permittivity, which were in dichloromethane 5.683 mmol•L −1 , in trichloromethane 2.785 mmol•L −1 and in carbon tetrachloride 0.321 mmol•L −1 .

Determination of Solubility of 4-(2-Hydroxyethyl)-1-piperazineethanesulfonic Acid and its Sodium Salt in Acetonitrile and Voltammetric Investigation of Sulphonamide Drugs in Different Solvents in Their Absence and Presence

“…As HEPES and its sodium salt are scarcely soluble in acetonitrile their solubilities were determined in it at 298 K. In a previous work the advantages of the co-solvent calibration method were demonstrated in the determination of the solubility of hydroquinone in chlorinated hydrocarbons [23]. This was applied in case of sodium salt of HEPES by using conductometry and on the other hand, as shown in the previous section, its conductivity was high.…”

Electrode Processes of 1,2,4-benzenetriol in Different non-aqueous Solvents

“…The most of quinones have been widely investigated both in aqueous and non-aqueous environments [9][10][11][12][13][14][15]. Most of them show reproducible current signals.…”

Highly Selective Chloromethanes Detection Based on Quartz Crystal Microbalance Gas Sensors with Ba-MOFs

“…Metal–organic frameworks (MOFs) have received particular attention due to their diverse structures, tunable porosity, and potential applications in supercapacitors, gas storage and separation, catalysis, and luminescence. − In addition, the extraordinary functionality of open metal sites may endow MOFs materials potential sensing properties. − Although several typical MOFs of MIL-101, HKUST-1, MOF-74, ZIF-8, and their derivatives have been reported to effectively detect some volatile organic compounds (VOCs) and toxic gas, such as HCHO, CH 3 CH 2 OH, (CH 3 ) 2 CO, C 6 H 6 , NO 2 , and NH 3 , etc. − However, there is very little work on sensing and detecting chloromethanes (CH 2 Cl 2 , CHCl 3 , and CCl 4 ) by MOFs materials. − As we all know, chloromethanes generally are used in solvents, chemical raw materials, pharmaceuticals, and chemical industries, etc. − Due to containing more chlorine atoms, chloromethanes are toxic and have high volatility at room temperature, which can cause chronic toxicity, mutagenicity, and carcinogenicity of organisms. ,− Therefore, chloromethanes have been listed as a priority pollutant by many countries . In such a situation, designing and synthesizing a stable MOF material that can detect chloromethanes rapidly and high selectively is a huge challenge.…”