Molecular Volume of Liquid Alkanes at Corresponding Temperatures

Egloff, Gustav; Kuder, Robert C.

doi:10.1021/ie50387a027

Ind. Eng. Chem.

1942

DOI: 10.1021/ie50387a027

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Molecular Volume of Liquid Alkanes at Corresponding Temperatures

Gustav Egloff¹,

Robert C. Kuder²

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1946

1957

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Cited by 2 publications

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“…9, 10, 12, IS, 15, 18), or at characteristic temperatures such as the boiling point (6, 14), the melting point (8, 16), or a given fraction of the critical temperature. The latter is preferred (5) when the necessary data are available.…”

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“…The metadialkylbenzenes have nearly the same molecular volumes as 1-and 2-phenylalkanes of the same molecular weight. The molecular volumes of normal alkanes is a linear function of the number of carbon atoms at any reduced temperature (5). Molecular volumes of the two aromatic series studied are also linear with respect to the number of carbon atoms, and may be expressed by Equation 1.…”

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Molecular Volumes of Mononuclear Aromatic Hydrocarbons.

Corbin¹,

Alexander²,

Egloff³

1946

Ind. Eng. Chem.

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T h e inolecular *olunies of 1-phenylalkanes and 2-pheii) 1-alkanes at any @\en fraction of the critical temperature are linear functions of the nuniber of carbon atoms. RIolecuIar\ olunies of fourteen homologous series of mononuclear aromatic h>drocarbons at 20' C. are also linear functions of the number of carbon atonis. Both of these relationships may be expressed by equations of the forni : M / d = V = a -+ bn Constants a and b are simple functions of the reduced temperature. These functions may be expressed by equations of the form :study reported her<% correlates existing density d:ita THE with structure for fourteen homologous series of mononurlcar aromatic hydrocarbons, and thus provides n method for cstirnntiug the molecular volumes (molecular weiplit divided by t1r:nsity) and densities of unknown or unmcasurctl Incmhcrs of t h r serica.('omparison:: of moleuuinr volumes must he m:i& a t specified temperatures berause of the variation of density with tempcrature. Compari3ons niny be made a t u constant tempcrnturc,, such as 20" C,. ( 1 , 2 , Y,, 9, 10, 12, 13, 16, 18), or at characteristic tcmperatures wi>h :ID the boiling point (6, 1 4 ) , the melting point (8,16), or a yivisn fraction of the c?itical temperature. 'rhc 1;ittcr is preferred ( 5 ) when thc necessary dnta :w available.The studies already published arc. concerned principally with aliphatic and alicyclic compounds. The present corrclation was carried out for fourtt.c.11 homologous series of arom:itic 1Iydroc:irbons a t 20' c.nncl for tvio series a t corre--1)oncling reduced temperatures (fr.ictions of the critical templXr:ltures). By both of these nwthods the molecular volume IY:IS found t o 1,c :In ntlditirc function oi thc. iiunit)i,1, cJi' w rt,oil atom-\vitllin :i I~OIY.O~OKOLIS .-i.ries. This 1elation>nip may I W c*spressud LIT 1 II(' c~qmitiori

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confidence: 99%

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confidence: 99%

Molecular Volumes of Mononuclear Aromatic Hydrocarbons.

Corbin¹,

Alexander²,

Egloff³

1946

Ind. Eng. Chem.

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Die Brechzahlen und Dichten innerhalb homologer Kohlenwasserstoffreihen Theoretische Deutung der empirischen Beziehungen von J. Smittenberg und D. Mulder

Hubert

Schultze

1957

Zeitschrift für Elektrochemie, Berichte der Bunsengesellschaft

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Ausgehend von einfachen Vorstellungen über die Polarisierbarkeit und die Raumerfüllung der Molekeln und unter Benutzung eines Molekelmodelles von K. Wisseroth werden die empirisch gefundenen Smittenberg‐Mulderschen Beziehungen, die den Verlauf der Brechzahlen und Dichten innerhalb homologer Kohlenwasserstoffreihen wiedergeben, physikalisch begründet. Die Zahlenwerte der theoretischen Parameter stimmen innerhalb der Fehlergrenze mit den empirisch gefundenen Werten überein.Für die n‐Alkine‐1, die 2‐Methylalkane, die 3‐Methylalkane und die 2,3‐Dimethylalkane werden die empirischen Parameterwerte angegeben, mit deren Hilfe die Berechnung der Brechzahlen und Dichten von flüssigen Homologen dieser Reihen mit mindestens 5 C‐Atomen in der Molekel möglich ist.Es wird gezeigt, daß sich die Wiedergabegüte der Meßwerte einer Reihe durch die Smittenberg‐Mulderschen Gleichungen aus der Konstitution des Grundkohlenwasserstoffes voraussagen läßt.

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Molecular Volume of Liquid Alkanes at Corresponding Temperatures

Cited by 2 publications

References 3 publications

Molecular Volumes of Mononuclear Aromatic Hydrocarbons.

Molecular Volumes of Mononuclear Aromatic Hydrocarbons.

Die Brechzahlen und Dichten innerhalb homologer Kohlenwasserstoffreihen Theoretische Deutung der empirischen Beziehungen von J. Smittenberg und D. Mulder

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