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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 105 (1983), S. 1252-1255 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Macromolecules 21 (1988), S. 2330-2335 
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of organic chemistry 45 (1980), S. 5009-5011 
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 258 (1980), S. 1202-1203 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 252 (1974), S. 486-490 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Zusammenfassung Die Lbslichkeit des Toluols in Wasser, Äthylenglykol und Harnstoff- oderp-Toluolsulfonsdure-ÄthylenglykolLösungen wurde bei 10°-Intervallen von 5-55 °C bestimmt. Aus den Ergebnissen wurden die thermodynamischen Parameter für die folgenden Prozesse berechnet: (i) Lösungsprozeß des Toluols in Wasser oder in Äthylenglykol und (ii) Übergang eines Mols des Toluols aus reinem Äthylenglykol in Harnstoff oderp-Toluolsulfonsäure-Äthylenglykol-Lösungen. Aus den thermodynamischen Parametern für die Lösungsprozesse ist es wie folgt geschlossen: Der Ordnungsgrad der Struktur des flüssigen Äthylenglykols soll viel niedriger sein als derselbe des Wassers, obgleich Äthylenglykol eine Ordnungsstruktur hat. In Äthylenglykol zeigte Harnstoff keine hydrotrope Wirksamkeit, und zwar erniedrigte es die Löslichkeit des Toluols. Dagegen zeigte p-Toluolsulfonsäure eine hydrotrope Wirksamkeit sogar in Äthylenglykol, aber sie ist viel weniger als die in Wasser. Aus diesen Resultaten wird geschlossen, daß die Wirksamkeit hydrotroper Verbindungen auf den Grad der Ordnungsstruktur von Lösungsmitteln beruhen sollte.
    Notes: Summary The solubilities of toluene in water, ethylene glycol and urea- orp-toluenesulfonic acidethylene glycol solutions were determined at 10 degress intervals from 5 to 55 °C. From the results the thermodynamic parameters for the following processes were calculated: (i) solution process of toluene in water or in ethylene glycol and (ii) transfer of one mole of toluene from pure ethylene glycol to urea- or p-toluenesulfonic acidethylene glycol solutions. From the thermodynamic parameters for the solution process it is concluded as follows: the degree of the order of the structure of liquid ethylene glycol would be much less than that of water, although ethylene glycol has an ordered structure. In ethylene glycol urea showed no hydrotropic action, and it rather decreased the solubility of toluene. On the contrary, p-toluenesulfonic acid showed a hydrotropic action even in ethylene glycol, but this action is less than in water. From these results it is concluded that the action of the hydrotropic agents is based on the degree of the ordered structure of solvents.
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 252 (1974), S. 566-569 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Zusammenfassung Die Extrahierung von Methansulfonsäure aus Wasser in ein basisches und organisches Lösungsmittel, Tri-n-butylphosphat (TBP), wurde untersucht, um Aussagen über den Zustand von Methansulfonsäure in TBP zu erhalten. Die Extrahierung wurde als ein Modell für die Färbung von Nylon mit Säurefarbstoffen angesehen. Es wurde gefunden, daß die Säure im mit Wasser gesättigten TBP hauptsächlich als Tetrahydrat vorlag. Die Protonenresonanz des Wassers in TBP relativ zum äußeren Standard, Tetramethylsilan, wurde gemessen. Die beobachtete Protonenresonanz war einfach und bewegte sich nach höherem Feld mit zunehmender Konzentration der Säure in TBP. Das Resultat zeigt, daß das Proton in der organischen Phase praktisch frei beweglich ist. Eine Modellvorstellung des Zustandes von Methansulfonsäure in TBP wurde vorgeschlagen.
    Notes: Summary The extraction of methanesulfonic acid from water into a basic organic solvent, tri-n-butyl phosphate (TBP) was investigated in order to obtain the information on the state of methanesulfonic acid in TBP. This extraction was taken as a model of dyeing of nylon with acid dyes. It was found that the acid in water saturated TB P was essentially tetrahydrated. The water proton resonance in TBP relative to the external standard, tetramethylsilane, was measured. The observed proton resonance was single and moved to higher field with increasing the concentration of the acid in TBP. The result indicates that the proton in the organic phase is practically freely movable. A model of the state of methanesulfonic acid in TBP was suggested.
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 202 (1965), S. 157-161 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Zusammenfassung Die Löslichkeiten folgender Verbindungen wurden in Wasser und wä\rigen Harnstofflösungen bei 25 und 35
    Notes: Summary The solubilities of the following compounds in water and urea aqueous solutions were determined at 25
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 210 (1966), S. 126-132 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Zusammenfassung Die Löslichkeiten folgender Verbindungen wurden in Wasser bei 5°-Intervallen von 0° bis 40° bestimmt; Anilin, Mtrobenzol, Chlorbenzol,β-Oxynaphthalin undα-Nitronaphthalin. Aus diesen Ergebnissen wurden die thermodynamischen Parameter für den Lösungsprozeß der reinen flüssigen Verbindungen in Wasser berechnet. Das Resultat wurde mit Hilfe des Begriffs der „Eisberge“ erklärt. Beim Benzol, Anilin und Chlorbenzol waren die Lösungswärmen negativ bei niedrigeren Temperaturen und wurden mit steigender Temperatur positiver. Dagegen traten beim Nitrobenzol,β-Oxynaphthalin undα-Nitronaphthalin stets die positiven Lösungswärmen auf. Dies sollte auf die großen intermolekularen Kräfte in der reinen Flüssigkeit zurückzuführen sein.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 206 (1965), S. 162-166 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Zusammenfassung Die Löslichkeiten folgender Verbindungen in Wasser und wÄ\rigerp-ToluolsulphonsÄure-Lösung wurden bei 5, 25 und 40
    Notes: Summary The solubilities of the following compounds in water andp-toluenesulphonic acid aqueous solution were determined at 5, 25 and 40
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 215 (1967), S. 45-47 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Summary Some organic acids, alcohol and amine which have an asymmetric carbon atom were used for an investigation of asymmetric absorption on wool. Racemic mixture of hydratropic acid, mandelic acid andα-phenethylamine have shown the selective absorption on wool from their aqueous and alcoholic aqueous solutions and S-form of their diastereoisomers preferentially absorbed on wool. According to the results we obtained so far, it is concluded that the preferential absorption strongly depends on the configuration of the substance of which wool is composed.
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