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  • Malonic acid  (2)
  • propanedioic acid  (2)
  • 16 km ENE Cape Roberts; Cape Roberts Project; Carbon, organic, total; Carbon, organic, total, standard deviation; Carbon, total; Carbon, total, standard deviation; Core wireline system; CRP; CRP-1; CWS; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Element analyser CNS, Carlo Erba NA1500; Nitrogen, standard deviation; Nitrogen, total; off Cape Roberts, Ross Sea, Antarctica; Sampling/drilling ice; Sulfur, standard deviation; Sulfur, total  (1)
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  • 1
    facet.materialart.
    Unknown
    Carbon, nitrogen and sulphur of sediment core CRP-1 (Table 1) (1998)
    PANGAEA
    In:  Supplement to: Kettler, Richard M (1998): Preliminary results of bitumen and kerogen analyses of the CRP-1. Terra Antartica, 5(3), 669-672, hdl:10013/epic.28326.d001
    Details
    Publication Date: 2024-04-27
    Description: Sediments and rocks recovered in CRP-1 coring operations contain relatively little organic matter (average 0.4% TOC) and very small amounts of solvent-soluble organic matter ( average 60 µg bitumen/g rock). The kerogen recovered from these rocks has atomic H:C ratios that range from 0.7 to 1.0 and atomic O:C ratios that range from 0.14-0.22. This range of values could be produced by mixing coal detritus with aquatic organic matter. Coal with the O:C ratios necessary to produce the kerogen present in the CRP-1 samples occurs in outcrops of the Permian Beacon Supergroup proximal to the drillsite.
    Keywords: 16 km ENE Cape Roberts; Cape Roberts Project; Carbon, organic, total; Carbon, organic, total, standard deviation; Carbon, total; Carbon, total, standard deviation; Core wireline system; CRP; CRP-1; CWS; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Element analyser CNS, Carlo Erba NA1500; Nitrogen, standard deviation; Nitrogen, total; off Cape Roberts, Ross Sea, Antarctica; Sampling/drilling ice; Sulfur, standard deviation; Sulfur, total
    Type: Dataset
    Format: text/tab-separated-values, 250 data points
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    DATA PANGAEA
  • 2
    Electronic Resource
    Electronic Resource
    Dissociation quotients of malonic acid in aqueous sodium chloride media to 100°C (1992)
    Springer
    Journal of solution chemistry 21 (1992), S. 883-900 
    Details
    ISSN: 1572-8927
    Keywords: Malonic acid ; propanedioic acid ; dissociation constants ; thermodynamics ; potentiometry ; ionic strength
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The first and second molal dissociation quotients of malonic acid were measured potentiometrically in a concentration cell fitted with hydrogen electrodes. The hydrogen ion molality of malonic acid/bimalonate solutions was measured relative to a standard aqueous HCl solution from 0 to 100°C over 25° intervals at five ionic strengths ranging from 0.1 to 5.0 molal (NaCl). The molal dissociation quotients and available literature data were treated in the all anionic form by a seven-term equation. This treatment yielded the following thermodynamic quantities for the first acid dissociation equilibrium at 25°C: logK 1a =-2.852±0.003, ΔH 1a /o =0.1±0.3 kJ-mol−1, ΔS 1a o =−54.4±1.0 J-mol−1-K−1, and ΔC p,1a o =−185±20 J-mol−1-K−1. Measurements of the bimalonate/malonate system were made over the same intervals of temperature and ionic strength. A similar regression of the present and previously published equilibrium quotients using a seven-term equation yielded the following values for the second acid dissociation equilibrium at 25°C: logK2a=−5.697±0.001, ΔH 2a o =−5.13±0.11 kJ-mol−1, ΔS 2a o =−126.3±0.4 J-mol−1-K−1, and ΔC p,2a o =−250+10 J-mol−1-K−1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00651513
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  • 3
    Electronic Resource
    Electronic Resource
    Cadmium Malonate Complexation in Aqueous Sodium Trifluoromethanesulfonate Media to 75°C; Including Dissociation Quotients of Malonic Acid (1998)
    Springer
    Journal of solution chemistry 27 (1998), S. 195-216 
    Details
    ISSN: 1572-8927
    Keywords: Malonic acid ; propanedioic acid ; dissociation constants ; cadmium ; complexation constants ; sodium trifluoromethanesulfonate ; potentiometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The molal formation quotients for cadmium–malonate complexes were measured potentiometrically from 5 to 75°C, at ionic strengths of 0.1, 0.3, 0.6 and 1.0 molal in aqueous sodium trifluoromethanesulfonate (NaTr) media. In addition, the stepwise dissociation quotients for malonic acid were measured in the same medium from 5 to 100°C, at ionic strengths of 0.1, 0.3, 0.6, and 1.0 molal by the same method. The dissociation quotients for malonic acid were modeled as a function of temperature and ionic strength with empirical equations formulated such that the equilibrium constants at infinite dilution were consistent, within the error estimates, with the malonic acid dissociation constants obtained in NaCl media. The equilibrium constants calculated for the dissociation of malonic acid at 25°C and infinite dilution are log K 1a=-2.86 ± 0.01 and log K 2a=-5.71 ± 0.01. A single Cd–malonate species, CdCH2C2O4, was identified from the complexation study and the formation quotients for this species were also modeled as a function of temperature and ionic strength. Thermodynamic parameters obtained by differentiating the equation with respect to temperature for the formation of CdCH2C2O4 at 25°C and infinite dilution are: K = 3.45 ± 0.09, ΔS° = 7 ± 6 kJ-mol-1, ΔS° = 91 ± 22 J-K--mol-1, and ΔC p o =400±300 J­K-1­mol-1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022638817245
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