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  • 1
    Electronic Resource
    Electronic Resource
    Microcrystalline cellulose powders: structure, surface features and water sorption capability (1999)
    Springer
    Cellulose 6 (1999), S. 57-69 
    Details
    ISSN: 1572-882X
    Keywords: BET ; microcrystalline cellulose ; water exchange ; XRD
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Characterization of an Avicel PH 102 MCC powder through polymerization degree determination, X‐ray diffraction and N2 adsorptions at subcritical temperatures is described. Specific characterizations of MCC/H2O exchange in different environments were performed by means of thermogravimetric weight losses on time/temperature scale and analyses of water adsorption/absorption from saturated vapors at 310 K. The reversibility of MCC/H2O interactions and the influence of different ‘surface area probes’ on the specific surface area are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009204309120
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Thermodynamics of the hydrogen-silver chloride cell in ethanol-water mixtures from −10 to +40°C (1988)
    Springer
    Journal of solution chemistry 17 (1988), S. 417-427 
    Details
    ISSN: 1572-8927
    Keywords: Ethanol-water solvent mixtures ; primary medium effect ; hydrogen-silver chloride cell ; standard emf ; standard thermodynamic functions ; activity coefficients of hydrochloric acid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract From emf E measurements of the reversible cell $$Pt|H_2 (g,1 atm)|HCl(m)|AgCl|Pt$$ at 0.01〈m〈0.1 mol-kg−1 in 70% (w/w) ethanol-water solvent mixtures over the temperature range from −10 to +40°C, the standard emf E° of the cell with the related thermodynamic functions of the cell reaction and the mean molal activity coefficients of hydrochloric acid have been determined. The present E data at 70% (w/w) ethanol have been combined with earlier data at ≤50% (w/w) ethanol to be analyzed critically by a one-stage multilinear regression method leading to an optimized set of E° values for the range 0–70% (w/w) ethanol which are essential for the assessment of pH standards in these solvent media.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00647309
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Standards for pH measurements and first ionization constants ofo-phthalic acid. Methylcellosolve-water solvent mixtures from −10 to 45°C (1995)
    Springer
    Journal of solution chemistry 24 (1995), S. 1265-1279 
    Details
    ISSN: 1572-8927
    Keywords: Acidity scales ; pH-metric standards ; mixed solvents ; methylcellosolve-water ; 2-methoxyethanol ; potassium hydrogenphthalate buffer ; ionization constants ; o-phthalic acid ; benzene-1,2-dicarboxylic acid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract From reversible emf measurements of the cell Pt/H2/KHPh+KCl/AgCl/Ag/Pt, reference value pH-metric standards, pH RVS , for 0.05 mol-kg−1 potassium hydrogenphthalate (KHPh) reference buffer solutions in 20, 50, and 80 wt % methylcellosolve (2-methoxyethanol, CH3O-CH2CH2OH)-water solvent mixtures from −10 to +45°C, have been determined in compliance with the criteria endorsed by IUPAC. The corresponding values of the first ionization constant ofo-phthalic acid (H2Ph, benzene-1,2-dicarboxylic acid), which is a key quantity for the acquisition of pH RVS standards, have been determined from emf measurements of the reversible cell Pt/H2/H2Ph+KHPh+KCl/AgCl/Ag/Pt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00972832
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    Paper (German National Licenses)
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