Densities and viscosities of aqueous solutions of 1-propanol and 2-propanol at temperatures from 293.15 K to 333.15 K

Pang, Fong-Meng; Seng, Chye‐Eng; Teng, Tjoon Tow; Ibrahim, Mahamad Hakimi

doi:10.1016/j.molliq.2007.01.003

Cited by 265 publications

(132 citation statements)

References 16 publications

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“…It has been shown that using a trained version of the Jouyban−Acree model for representing the density of solvent mixtures in the absence of a solute, one may predict the solute saturated density by employing the density values of the saturated solutions in the monosolvents. 18−23 To provide such a predictive tool for densities of TRIS saturated solutions in water + 1-PrOH mixtures at various temperatures, densities of the solute-free mixtures of water + 1-PrOH mixtures in various mole fraction compositions of the binary mixtures, taken from the literature, 24 are fit to the model, and obtained equation is …”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…The measured ρ 1,T sat and ρ 2,T sat values for TRIS saturated solutions of water and 1-PrOH at various temperatures along with their solute free values 24 are listed in Table 5. There are decreased patterns for the densities of water and 1-PrOH in the absence of TRIS due to volume expansion of the solvents at higher temperatures.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Solubility of Tris(hydroxymethyl)aminomethane in Water + 1-Propanol Mixtures at Various Temperatures

Jouyban-Gharamaleki

Soleymani³

et al. 2014

J. Chem. Eng. Data

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Solubility of tris(hydroxymethyl)aminomethane (TRIS) in various mass fraction compositions of water + 1-propanol solvent mixtures at (293.2, 298.2, 303.2, 308.2, and 313.2) K was measured using a laser monitoring technique. The generated data were mathematically represented using the Jouyban−Acree model. The correlated mole fraction solubilities are in good agreement with the corresponding experimental values as documented by an overall mean percentage deviation of 2.3 %. Densities of TRIS saturated solutions in water and 1-propanol at various temperatures were measured and employed to predict the density of TRIS saturated solutions in their binary solvent mixtures using a well-established method. ■ INTRODUCTIONBuffering agents dissolved in mixed solvents are used as mobile phases and/or background electrolytes in analytical separation methods such as high performance liquid chromatography (HPLC) or capillary electrophoresis (CE) where the low solubility of the buffering agents at higher concentrations of the organic solvent may cause practical problems. The addition of organic solvents to aqueous solutions may improve the solubility of the analyte, the resolution of the peaks of various analytes, or determine other relevant analytical parameters like pK a values, partition coefficients, or electrophoretic and electroosmotic mobilities. 1 Tris(hydroxymethyl)aminomethane (TRIS), the chemical abstract service number of 77-86-1 and acid dissociation constant (pK a ) of 8.1, is a common buffering agent in chemical and biochemical areas. It possesses good solubility in water; however, in many applications, organic solvents are added to the aqueous solutions to alter some other parameters. The addition of organic solvents to the aqueous solutions causes some solubility problems for TRIS, and the solubility data of TRIS in water + organic solvent mixtures are required in practice. The available solubility data of TRIS in various solvent mixtures is reviewed in a recent publication along with a report of TRIS solubility in water + methanol mixtures at 293.2 K to 313.2 K.2 A quick survey on the published HPLC and CE methods for pharmaceutical analysis showed that TRIS buffer has been used in water +1-propanol (1-PrOH) with considerable frequency. 3Owing to practical importance and to continue our systematic investigations on the solubility of solutes in solvent mixtures, the solubility of TRIS in aqueous mixtures of 1-PrOH at different temperatures is measured using a lab-made setup. This setup has been validated using measured solubilities of acetaminophen (as a nonelectrolyte) and TRIS (as an electrolyte) and their comparison with previously reported data taken from the literature.2,4 To provide a predictive tool for the calculation of the solubility of TRIS at any composition of the binary solvent mixture and temperatures, the data are fitted to the Jouyban−Acree model and its combined version with the van't Hoff equation.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Solubility of Tris(hydroxymethyl)aminomethane in Water + 1-Propanol Mixtures at Various Temperatures

Jouyban-Gharamaleki

Soleymani³

et al. 2014

J. Chem. Eng. Data

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“…43 The fact that the predicted values for the viscosity (see Table 3) is far away from the measured ones is due to the difficulty in predicting the viscosity for alcohol-water mixtures, as already mentioned by Wu, 44 where it was also suggested to fine-tune the UNIFAC-model parameters with viscosity data (this has not been done in this work). It can be noted, however, that the experimentally measured values of the mixture viscosities still matched the viscosity constraint, and did not make the product infeasible.…”

Section: Experimental Validation Stage (S3)mentioning

confidence: 89%

Design of formulated products: Experimental component

et al. 2011

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A systematic methodology for the design and verification of chemical-based products is proposed. By integrating modeling, and experiments, the search space is efficiently scanned to identify the feasible product candidates. The product design (or verification) problem consists of three stages: computer-aided design (Stage 1), which generates a list of feasible candidates, experimental planning (Stage 2), which generates a list of experiments and checks the available experimental set-ups, and experimental testing (Stage 3), which measures the necessary data and verifies the desirable attributes of the final product. The first stage (Stage 1) has been covered in previous publications, along with detailed case studies. The development of Stage 2 and Stage 3 is considered in this article and highlighted through two case studies involving the design and validation of an insect repellent lotion and a sunscreen lotion.

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“…The pseudo-binary gasoline+alcohol mixtures were prepared at room temperature for various volume fractions, in order to cover the entire composition range. 3 ) 0.7919 0.8034 0.7909 [13] 0.7950 [14] 0.7851 0.7855 [15] 0.7853 [16] 0.8102 0.8101 [17] 0.8097 [13] Dynamic viscosity at 40 o C (mPa•s) 0.3673 0.9081 0.829 [18] 0.837 [19] 1.3236 1.3470 [16] 1.3500 [20] 1.7769 1.7696 [21] Refractive index at 20 o C 1.4520 1.3624 1.362 [22] 1.3766 1.3750 [23] 1.3752 [24] 1.3991 1.3950 [22] 1.3991 [25] The experimental uncertainty in volume fraction was estimated to be less than ±0.002. The mixtures were prepared in airtight narrow-mouth ground glass stoppered bottle, in order to minimize the evaporative losses.…”

Section: Methodsmentioning

confidence: 99%

Study of the refractive index of gasoline+alcohol pseudo-binary mixtures

Nita

Geacai

Iulian

et al. 2017

Ovidius University Annals of Chemistry

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Abstract. The properties of gasoline change as a result of blending with a bioalcohol, affecting the behavior of the pseudo-binary system. The aim of this paper is to present experimental data of the refractive index for pseudobinary mixtures of a reformate gasoline with ethanol, isopropanol and n-butanol over the entire composition range and for temperature ranging from 293.15 K to 313.15 K. The accuracy of different equations to predict the refractive index of the mixtures was tested. The best prediction accuracy (the lower AAD) corresponded to Eykman and Lorentz-Lorenz mixing rules. A logarithmic equation proposed to correlate the refractive index with composition and temperature of gasoline+alcohol mixtures showed a good accuracy (the absolute average deviation AAD < 0.052%). The deviations in refractive index for investigated systems are negative over the entire composition range and at all investigated temperatures.

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Densities and viscosities of aqueous solutions of 1-propanol and 2-propanol at temperatures from 293.15 K to 333.15 K

Cited by 265 publications

References 16 publications

Solubility of Tris(hydroxymethyl)aminomethane in Water + 1-Propanol Mixtures at Various Temperatures

Solubility of Tris(hydroxymethyl)aminomethane in Water + 1-Propanol Mixtures at Various Temperatures

Design of formulated products: Experimental component

Study of the refractive index of gasoline+alcohol pseudo-binary mixtures

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