Liquid density as a function of temperature of five organic solvents

Murrieta-Guevara, Florentino; Trejo, Arturo

doi:10.1021/je00036a032

Cited by 75 publications

(40 citation statements)

References 5 publications

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“…or EA infinitely diluted in water, are collected in Tables 3 Molar functions (x;j and 4 and compared with available literature data (13)(14)(15)(16)(17)(18).…”

Section: Resultsmentioning

confidence: 99%

A comprehensive thermodynamic investigation of water–ethanolamine mixtures at 10, 25, and 40 °C

Pagé¹,

Huot²,

Jolicoeur³

1993

Can. J. Chem.

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. The density, isobaric specific heat capacity, and isentropic compressibility of water-ethanolamine (W-EA) mixtures have been measured at three temperatures (10, 25, and 40°C) over the entire composition range. The results were used to calculate various thermodynamic excess functions of these mixtures, namely: the excess molar volume (v:), excess molar isentropic and isothermal compressibilities ( K : . , , K:,,), excess molar isobaric and isochoric heat capacities (CF,,,,, CB,,,), and excess molar isobaric expansion (aVt/aT),. The corresponding partial molar quantities for ethanolamine in the mixtures were also computed. These excess and partial molar quantities were compared with those observed earlier in the water -ethylene glycol (W-EG) (1) and in the water-2-methoxyethanol (W-ME) (2) mixtures. The similarities and differences in the properties of these systems are interpreted on the basis of the specific molecular features of the cosolvents and the concepts of cooperative fluctuations and hydrogen-bonding connectivity in liquid water and dilute aqueous solutions. [Traduit par la redaction]

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“…or EA infinitely diluted in water, are collected in Tables 3 Molar functions (x;j and 4 and compared with available literature data (13)(14)(15)(16)(17)(18).…”

Section: Resultsmentioning

confidence: 99%

A comprehensive thermodynamic investigation of water–ethanolamine mixtures at 10, 25, and 40 °C

Pagé¹,

Huot²,

Jolicoeur³

1993

Can. J. Chem.

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“…The temperature was controlled within ±0.002 K using a Haake A80 bath-circulator and measured with a digital thermometer, Hewlett Packard 2804 A, using a quartz sensor with a precision of ±0.001 K. The readings from this thermometer were compared with those from a calibrated thermometer Hart Scientific, 1529 Chub-E4 model whose accuracy of ±0.005 K is traceable to the US NIST. The details on the calibration of the densimeter together with the experimental procedure have been included in several previous works [21][22][23][24][25]. The reported density results for each saturated liquid phase were obtained from the average period of vibration, which was in turn obtained from at least 20 stable measurements, whose average standard deviation was ±0.0005.…”

Section: Densitymentioning

confidence: 99%

Liquid–liquid phase behaviour, liquid–liquid density, and interfacial tension of multicomponent systems at 298K

García-Flores¹,

Trejo²,

Águila-Hernández³

2007

Fluid Phase Equilibria

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“…An extensive literature search identified two papers with diethanol amine density measurements over a range of temperature [1,2]. The range of temperature (293-353 K, and 298-333 K) for each paper did not extend to the desired 400 K point, and the pressure was not specified in these references.…”

Section: Justification For Recommendationmentioning

confidence: 99%

“…Comparisons with literature values for the density of diethanol amine were also considered; i.e., reference [2] …”

Section: Determination Of Uncertaintymentioning

confidence: 99%

Fluid properties simulation challenge: Recommendations for problem II(d): diethanol amine density

Watts¹

2004

Fluid Phase Equilibria

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Problem conditionsRecommended value(1) 0.1 MPa, 330 K 1072.7 ± 0.3 kg m −3 (2) 5.0 MPa, 400 K 1025.2 ± 0.3 kg m −3Primary source of recommendation:The values indicated above were taken from measurements performed for the challenge at NIST, Boulder, CO, Physical and Chemical Properties Division. Experimental details are given below. Justification for recommendation:An extensive literature search identified two papers with diethanol amine density measurements over a range of temperature [1,2]. The range of temperature (293-353 K, and 298-333 K) for each paper did not extend to the desired 400 K point, and the pressure was not specified in these references. It was decided to measure this compound at NIST.Two vibrating-tube densimeters within a dynamic phase equilibrium apparatus [3] were used to measure density of the pure liquid under controlled pressure and temperature. This apparatus was constructed of corrosion-resistant materials for all of the wetted parts. Measurements can be performed from 250 to 425 K, and to 35 MPa. The apparatus consists of an equilibrium cell with a sapphire viewing window, vapor and liquid pumps for recirculation, and the vibrating-tube densimeters. The total volume of the apparatus is approximately 300 ml. The equilibrium cell and densimeters are housed in an aluminum block to minimize the temperature gradients. The temperature was measured with a standard-reference-grade 25 PRT in the equilibrium cell wall, and a 100 PRT for each of the densimeters. The temperature was maintained using a convection oven and recir-ଝ Contribution of the National Institute of Standards and Technology. Not subject to copyright in the United States.E-mail address: watts@boulder.nist.gov (L.A. Watts).culating cooling bath, as needed. For these experiments, the vapor pump was not used, and the system was filled with condensed liquid. Pressure was determined with a commercial pressure transducer (0-70 MPa, 0.01% accuracy over this range) that had been calibrated with a dead-weight gauge traceable to NIST standards. The densimeters were calibrated from 280 to 400 K using vacuum, high-purity distilled, deionized and degassed water and degassed 2-trifluoromethyl-3-ethoxydodecafluorohexane (HFE-7500) as standards. The density of water was obtained from the equation of state of Wagner and Pruß [4]. The density of the HFE-7500 was determined over the temperature range of 285-400 K with pressures to 20 MPa using a double-sinker densimeter, with calibration traceable to NIST. The HFE-7500 was from the same lot used in the vibrating-tube densimeters and was degassed and handled in the same way.Each densimeter was calibrated using the equation [5,6] ρ(T, P) = β 1 + β 2 T + β 3 Pwhere β i are the calibration constants unique to each densimeter, τ(T,P) is the measured vibrational period, and τ(T 0 ,0) is the vibrational period at the reference temperature and vacuum. All state points measured for this substance were within the range of the calibration in temperature, pressure, and vibrational period; no extrapolation was...

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Liquid density as a function of temperature of five organic solvents

Cited by 75 publications

References 5 publications

A comprehensive thermodynamic investigation of water–ethanolamine mixtures at 10, 25, and 40 °C

A comprehensive thermodynamic investigation of water–ethanolamine mixtures at 10, 25, and 40 °C

Liquid–liquid phase behaviour, liquid–liquid density, and interfacial tension of multicomponent systems at 298K

Fluid properties simulation challenge: Recommendations for problem II(d): diethanol amine density

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