Glutaric Acid Mixture Data

The tables of data are given below in the order the systems are listed on the main glutaric acid page.

(1a) Relative Humidity of Deliquescence of Mixtures with (NH4)2SO4

   DRH     xH2Glut     t         uncert.     ref.     weight
  80.8      0.0        20          2.1        a         -
  79.8      0.100      20          2.1        a         -
  79.2      0.202      20          2.1        a         -
  79.3      0.302      20          2.1        a         -
  79.5      0.403      20          2.1        a         -
  78.8      0.502      20          2.1        a         -
  80.6      0.603      20          2.1        a         -
  82.4      0.704      20          2.1        a         -
  85.1      0.794      20          2.1        a         -
  85.4      0.903      20          2.1        a         -
  89.4      1.0        20          2.1        a         -

Notes and References

Symbols: DRH - the equilibrium relative humidity (as a percentage) above an aqueous solution saturated with respect to a solid phase; xH2Glut - the mole fraction of the acid in the total solute, equal to nH2Glut/(nH2Glut + n(NH4)2SO4); t - experimental temperature (^oC); uncert. - uncertainty in the DRH determination; ref. - source of data; weight - the weight assigned in the fit of the model to determine parameter values.
Source: a - A. Pant, A. Fok, M. T. Parsons, J. Mak and A. K. Bertram (2004) Geophys. Res. Lett. 31, L12111.
These data were obtained from the authors. The value of xH2Glut for simultaneous saturation with respect to both solids is given as 0.5 ±0.1.

(1b) Relative Humidity of Deliquescence of Mixtures with (NH4)2SO4

  DRH     xH2Glut  Solid      t       uncert.(a)   uncert.(b)    ref.     weight
  0.82     0.0       1        24        0.03         0.05         a          -
  0.79     0.12      1        24        0.03         0.05         a          -
  0.775    0.53      1,2      24        0.03         0.05         a          -
  0.89     0.87      2        24        0.03         0.05         a          -
  0.87     1.0       2        24        0.03         0.05         a          -

Notes and References

Symbols: DRH - the equilibrium relative humidity (as a fraction, not %) above an aqueous solution saturated with respect to a solid phase; xH2Glut - the mole fraction of the acid in the solute, equal to nH2Glut/(nH2Glut + n(NH4)2SO4); t - experimental temperature (^oC); uncert.(a) - uncertainty in the DRH; uncert.(b) - uncertainty in xH2Glut; ref. - source of data; weight - the weight assigned in the fit of the model to determine parameter values.
Source: a - S. D. Brooks, M. E. Wise, M. Cushing and M. A. Tolbert (2002) Geophys. Res. Lett. 29, doi:10.1029/2002GL014733.
These data were extracted from Figure 2 of Brooks et al. The solids were not identified, and are assumed to be the solid acid and salt only.

(1c) Water Activities of Mixtures with (NH4)2SO4, of Eutonic Composition

   nS/nW      1/aW         aW     mH2Glut  m(NH4)2SO4         t    uncert.   ref.   weight  
  0.176432   1.30624     0.7656   5.1149     4.6787          25.0   0.009      a       -                                             -  
  0.176432   1.29819     0.7703   5.1149     4.6787          25.0   0.009      a       -                                             -  
  0.176528   1.30844     0.7643   5.1176     4.6812          25.0   0.009      a       -                                             -  
  0.115397   1.19168     0.8392   3.3454     3.0601          25.0   0.009      a       -                                             -  
  0.080512   1.13124     0.8840   2.3341     2.1350          25.0   0.009      a       -                                             -  
  0.061012   1.09407     0.9140   1.7688     1.6179          25.0   0.009      a       -                                             -  
  0.035627   1.05220     0.9504   1.0328     0.9448          25.0   0.009      a       -                                             -  
  0.015276   1.02350     0.9770   0.4429     0.4051          25.0   0.009      a       -                                             -  
  0.005648   1.01081     0.9893   0.1637     0.1498          25.0   0.009      a       -                                             -  
  0.011063   1.01395     0.9862   0.3207     0.2934          25.0   0.009      a       -            
  0.020212   1.03328     0.9678   0.5860     0.5360          25.0   0.009      a       -

Notes and References

Symbols: nS/nW - moles of total solutes per mole of water; aW - water activity; prefix m denotes molality; t - experimental temperature (^oC); uncert. - uncertainty in the measured water activity (average of the 0.5% to 1.35% in RH given by Wise et al., 2003); ref. - source of data; weight - the weight assigned in the fit of the model to determine parameter values.
Source: a - M. E. Wise, J. D. Surratt, D. B. Curtis, J. E. Shilling and M. A. Tolbert (2003) J. Geophys. Res. 108, doi:10.1029/2003JD003775, 8 pages.
The original data of Wise et al. (2003), which are not tabulated in their paper, were obtained directly from the authors. The mole fraction of the acid in the eutonic solution is nH2Glut/(nH2Glut + n(NH4)2SO4) = 0.533. The uncertainty in this figure is approximately ±0.01. The solutions at the lowest water activity (about 0.77) are simultaneously saturated with respect to both solutes.

(1d) Water Activities of Aqueous H2Glut + (NH4)2SO4 Mixtures (1:1 Mole Ratio)

    aW        mfs       m         osm       np       t    uncert.  ref. weight  
  0.9880    0.05058   0.2016    0.8310     bulk    20-23   0.01     a    1.0  
  0.9740    0.11846   0.5085    0.7189     bulk    20-23   0.01     a    1.0  
  0.9640    0.16377   0.7411    0.6865     bulk    20-23   0.01     a    1.0  
  0.9500    0.20951   1.0030    0.7097     bulk    20-23   0.01     a    1.0  
  0.9290    0.28189   1.4855    0.6880     bulk    20-23   0.01     a    1.0  
  0.9010    0.34679   2.0091    0.7201     bulk    20-23   0.01     a    1.0  
  0.8760    0.39899   2.5123    0.7313     bulk    20-23   0.01     a    1.0  
  0.8560    0.43494   2.9129    0.7407     bulk    20-23   0.01     a    1.0  
  0.8250    0.48275   3.5319    0.7559     bulk    20-23   0.01     a    1.0  
  0.8030    0.51630   4.0393    0.7538     bulk    20-23   0.01     a    1.0  
  0.1929    1.0         -          -       1e      20-23   0.01     a     -   
  0.3739    0.9410      -          -       1e      20-23   0.01     a     -   
  0.3986    0.9308      -          -       1e      20-23   0.01     a     -   
  0.4594    0.9031      -          -       1e      20-23   0.01     a     -   
  0.4810    0.8958      -          -       1e      20-23   0.01     a     -   
  0.5335    0.8816      -          -       1e      20-23   0.01     a     -   
  0.5921    0.8544      -          -       1e      20-23   0.01     a     -   
  0.6056    0.7851      -          -       1e      20-23   0.01     a     -   
  0.6216    0.7066    9.1138    0.7240     1e      20-23   0.01     a    1.0  
  0.6358    0.6902    8.4310    0.7454     1e      20-23   0.01     a    1.0  
  0.6474    0.6674    7.5936    0.7946     1e      20-23   0.01     a    1.0  
  0.6607    0.6552    7.1910    0.7998     1e      20-23   0.01     a    1.0  
  0.6822    0.6363    6.6207    0.8016     1e      20-23   0.01     a    1.0  
  0.7137    0.6020    5.7240    0.8177     1e      20-23   0.01     a    1.0  
  0.7318    0.5726    5.0699    0.8547     1e      20-23   0.01     a    1.0  
  0.7537    0.5577    4.7717    0.8223     1e      20-23   0.01     a    1.0  
  0.7758    0.5386    4.4175    0.7975     1e      20-23   0.01     a    1.0  
  0.7999    0.5352    4.3575    0.7110     1e      20-23   0.01     a    1.0  
  0.8000    0.5236    4.1592    0.7445     1e      20-23   0.01     a    1.0  
  0.3655    0.9116      -         -        2e      20-23   0.01     a     -   
  0.3903    0.9014      -         -        2e      20-23   0.01     a     -   
  0.4200    0.8975      -         -        2e      20-23   0.01     a     -   
  0.4729    0.8928      -         -        2e      20-23   0.01     a     -   
  0.5265    0.8696      -         -        2e      20-23   0.01     a     -   
  0.5575    0.8334      -         -        2e      20-23   0.01     a     -   
  0.5867    0.7328   10.3785    0.7130     2e      20-23   0.01     a    1.0  
  0.6010    0.7210    9.7795    0.7225     2e      20-23   0.01     a    1.0     
  0.6188    0.7177    9.6209    0.6923     2e      20-23   0.01     a    1.0  
  0.6379    0.7063    9.1006    0.6855     2e      20-23   0.01     a    1.0  
  0.6474    0.6725    7.7708    0.7765     2e      20-23   0.01     a    1.0  
  0.6625    0.6623    7.4218    0.7699     2e      20-23   0.01     a    1.0  
  0.6822    0.6314    6.4824    0.8187     2e      20-23   0.01     a    1.0  
  0.7031    0.6108    5.9390    0.8231     2e      20-23   0.01     a    1.0  
  0.7188    0.5830    5.2908    0.8660     2e      20-23   0.01     a    1.0  
  0.7420    0.5615    4.8458    0.8546     2e      20-23   0.01     a    1.0  
  0.7591    0.5402    4.4460    0.8603     2e      20-23   0.01     a    1.0  
  0.7800    0.5358    4.3680    0.7894     2e      20-23   0.01     a    1.0  
  0.8000    0.5197    4.0947    0.7562     2e      20-23   0.01     a    1.0  
  0.2000    1.0000      -         -        1g      20-23   0.01     a     -   
  0.3453    0.9870      -         -        1g      20-23   0.01     a     -   
  0.4262    0.9783      -         -        1g      20-23   0.01     a     -   
  0.4669    0.9773      -         -        1g      20-23   0.01     a     -   
  0.5099    0.9677      -         -        1g      20-23   0.01     a     -   
  0.5662    0.9556      -         -        1g      20-23   0.01     a     -   
  0.6092    0.9540      -         -        1g      20-23   0.01     a     -   
  0.6387    0.9299      -         -        1g      20-23   0.01     a     -   
  0.6601    0.9273      -         -        1g      20-23   0.01     a     -   
  0.6875    0.9252      -         -        1g      20-23   0.01     a     -   
  0.7082    0.8878      -         -        1g      20-23   0.01     a     -   
  0.7147    0.8798      -         -        1g      20-23   0.01     a     -   
  0.7229    0.8613      -         -        1g      20-23   0.01     a     -   
  0.7318    0.8389      -         -        1g      20-23   0.01     a     -   
  0.7387    0.8197      -         -        1g      20-23   0.01     a     -   
  0.7411    0.8099      -         -        1g      20-23   0.01     a     -   
  0.7460    0.7859      -         -        1g      20-23   0.01     a     -   
  0.7524    0.7654      -         -        1g      20-23   0.01     a     -   
  0.7568    0.7486      -         -        1g      20-23   0.01     a     -   
  0.7610    0.7172      -         -        1g      20-23   0.01     a     -   
  0.7632    0.6878      -         -        1g      20-23   0.01     a     -   
  0.7645    0.6600      -         -        1g      20-23   0.01     a     -   
  0.7661    0.6099      -         -        1g      20-23   0.01     a     -   
  0.7692    0.5457    4.5457    0.8011     1g      20-23   0.01     a     -   
  0.7882    0.5378    4.4033    0.7501     1g      20-23   0.01     a     -   
  0.7981    0.5270    4.2163    0.7423     1g      20-23   0.01     a     -   
  0.2000    1.0000      -         -        2g      20-23   0.01     a     -   
  0.2980    0.9916      -         -        2g      20-23   0.01     a     -   
  0.4207    0.9909      -         -        2g      20-23   0.01     a     -   
  0.4846    0.9870      -         -        2g      20-23   0.01     a     -   
  0.5535    0.9857      -         -        2g      20-23   0.01     a     -   
  0.5939    0.9805      -         -        2g      20-23   0.01     a     -   
  0.6274    0.9605      -         -        2g      20-23   0.01     a     -   
  0.7083    0.8498      -         -        2g      20-23   0.01     a     -   
  0.7128    0.7810      -         -        2g      20-23   0.01     a     -   
  0.7148    0.7917      -         -        2g      20-23   0.01     a     -   
  0.7186    0.7862      -         -        2g      20-23   0.01     a     -   
  0.7286    0.7777      -         -        2g      20-23   0.01     a     -   
  0.7313    0.7632      -         -        2g      20-23   0.01     a     -   
  0.7349    0.7347      -         -        2g      20-23   0.01     a     -   
  0.7375    0.7237      -         -        2g      20-23   0.01     a     -   
  0.7400    0.7013      -         -        2g      20-23   0.01     a     -   
  0.7455    0.6774      -         -        2g      20-23   0.01     a     -   
  0.7520    0.6539      -         -        2g      20-23   0.01     a     -   
  0.7553    0.6421      -         -        2g      20-23   0.01     a     -   
  0.7588    0.6145      -         -        2g      20-23   0.01     a     -   
  0.7607    0.5955      -         -        2g      20-23   0.01     a     -   
  0.7624    0.5707      -         -        2g      20-23   0.01     a     -   
  0.7630    0.5589      -         -        2g      20-23   0.01     a     -   
  0.7642    0.5536    4.6931    0.7952     2g      20-23   0.01     a     -   
  0.7664    0.5522    4.6666    0.7912     2g      20-23   0.01     a     -   
  0.7716    0.5468    4.5659    0.7881     2g      20-23   0.01     a     -   
  0.8019    0.5096    3.9325    0.7791     2g      20-23   0.01     a     -   
  0.8229    0.4903    3.6403    0.7431     2g      20-23   0.01     a     -

Notes and References

Symbols: aW - water activity; mfs - total mass fraction of solutes in the particle, as given by Choi and Chan (2002) and at http://ihome.ust.hk/~keckchan/hygroscopic.html); m denotes the molality of each solute (only for those particles that appear to be fully aqueous); osm - stoichiometric osmotic coefficient, equal to -ln(aW)/(0.0180152 × 4 × m); np - particle number ('bulk' indicates bulk solution measurements of equilibrium water activity, suffix e indicates an edb evaporation experiment in an atmosphere of decreasing relative humidity, and suffix g particle growth in an atmosphere of increasing relative humidity); t - experimental temperature (^oC); uncert. - probable uncertainty in the water activity; ref. - source of data; weight - the weight assigned in the fit of the model to determine parameter values.
Source: a - M. Y. Choi and C. K. Chan (2002) Environ. Sci. Technol. 36, 2422-2428.
The uncertainty associated with mfs for the edb experiments (and so also the molality m) has three sources: the determination of the dc balancing voltage, solute evaporation, and the standardisation of the particle composition to a single reference state (either dilute solution or solid particle). An overall uncertainty of at least ±0.01 seems likely. The corresponding values for the molality of each component can be obtained using the conversion equation m = (mfs/(1 - mfs)) × (1000/(MW) where MW is the sum of the molar masses of the two solutes (132.14 + 132.11 g).

(2a) Relative Humidity of Deliquescence of Mixtures with NaCl

  DRH     xH2Glut     t       uncert.    ref.     weight
  75.5     0          20       2.1        a         -
  75.5     0.1        20       2.1        a         -
  73.7     0.199      20       2.1        a         -
  73.8     0.3        20       2.1        a         -
  75.9     0.401      20       2.1        a         -
  78.8     0.493      20       2.1        a         -
  81       0.6        20       2.1        a         -
  83.6     0.704      20       2.1        a         -
  85.8     0.802      20       2.1        a         - 
  87.9     0.898      20       2.1        a         -
  89.4     1          20       2.1        a         -

Notes and References

Symbols: DRH - the equilibrium relative humidity (as a percentage) above an aqueous solution saturated with respect to a solid phase; xH2Glut - the mole fraction of the acid in the total solute, equal to nH2Glut/(nH2Glut + n(NH4)2SO4); t - experimental temperature (^oC); uncert. - uncertainty in the DRH determination; ref. - source of data; weight - the weight assigned in the fit of the model to determine parameter values.
Source: a - A. Pant, A. Fok, M. T. Parsons, J. Mak and A. K. Bertram (2004) Geophys. Res. Lett. 31, L12111.
These data were obtained from the authors. The value of xH2Glut for simultaneous saturation wtih respect to both solids is given as 0.3 ±0.1.

(2b) Relative Humidity of Deliquescence of Mixtures with NaCl

  DRH    wt%H2Glut       t       uncert.    ref.     weight
  75.0     0         22.9-25.6    0.5        a         -
  75.2     2.0       22.9-25.6    0.5        a         -
  75.4     5.0       22.9-25.6    0.5        a         -
  75.3     5.0       22.9-25.6    0.5        a         -
  74.0     2.5       22.9-25.6    0.5        a         -
  73.9     2.5       22.9-25.6    0.5        a         -
  73.4     5.0       22.9-25.6    0.5        a         -
  73.8     10.0      22.9-25.6    0.5        a         -
  73.5     10.0      22.9-25.6    0.5        a         -
  73.2     10.0      22.9-25.6    0.5        a         -
  72.7     20.0      22.9-25.6    0.5        a         -
  72.7     20.0      22.9-25.6    0.5        a         -
  72.3     20.0      22.9-25.6    0.5        a         -
  72.6     40.0      22.9-25.6    0.5        a         -
  71.8     40.0      22.9-25.6    0.5        a         -
  71.7     40.0      22.9-25.6    0.5        a         -
  71.2     60.0      22.9-25.6    0.5        a         -
  70.6     60.0      22.9-25.6    0.5        a         -
  70.4     60.0      22.9-25.6    0.5        a         -

Notes and References

Symbols: DRH - the equilibrium relative humidity (as a percentage) above an aqueous solution saturated with respect to NaCl(s); wt%H2Glut - the mole fraction of the acid in the total solute; t - experimental temperature (^oC); uncert. - uncertainty in the DRH determination; ref. - source of data; weight - the weight assigned in the fit of the model to determine parameter values.
Source: a - Y. Y. Chen and W.-M. G. Lee (2001) J. Environ. Sci. Health A36, 229-242.
Note that the data were obtained from Figure 5 of Chen and Lee. The listed uncertainty is an approximate value, from visual inspection of the graph.

(2c) Water Activities of Aqueous H2Glut + NaCl Mixtures (1:1 Mass Ratio)

    aW      mfs(orig.)    mfs        mNaCl     mGlut     osm     np      t     uncert.  ref.   weight  
   0.3691    1.0000      1.0           -         -        -      1e    20-23    0.01     a       -
   0.3723    0.9925      0.9925        -         -        -      1e    20-23    0.01     a       -
   0.3981    0.9787      0.9787        -         -        -      1e    20-23    0.01     a       -
   0.4290    0.9636      0.9636        -         -        -      1e    20-23    0.01     a       -
   0.4550    0.9542      0.9542        -         -        -      1e    20-23    0.01     a       -
   0.5407    0.9501      0.9501        -         -        -      1e    20-23    0.01     a       -
   0.5706    0.9457      0.9457        -         -        -      1e    20-23    0.01     a       -
   0.5769    0.5357      0.5357      9.871     4.367    1.2665   1e    20-23    0.01     a      1.0
   0.5854    0.5243      0.5243      9.430     4.171    1.2905   1e    20-23    0.01     a      1.0
   0.5943    0.5134      0.5134      9.027     3.993    1.3102   1e    20-23    0.01     a      1.0
   0.6134    0.5030      0.5030      8.659     3.830    1.2828   1e    20-23    0.01     a      1.0
   0.6323    0.4924      0.4924      8.300     3.671    1.2553   1e    20-23    0.01     a      1.0
   0.6414    0.4841      0.4841      8.028     3.551    1.2572   1e    20-23    0.01     a      1.0
   0.6480    0.4708      0.4708      7.612     3.367    1.2955   1e    20-23    0.01     a      1.0
   0.6643    0.4606      0.4606      7.306     3.232    1.2724   1e    20-23    0.01     a      1.0
   0.6802    0.4500      0.4500      7.000     3.097    1.2512   1e    20-23    0.01     a      1.0
   0.6976    0.4395      0.4395      6.709     2.968    1.2200   1e    20-23    0.01     a      1.0
   0.7137    0.4252      0.4252      6.329     2.800    1.2112   1e    20-23    0.01     a      1.0
   0.7279    0.4158      0.4158      6.090     2.694    1.1853   1e    20-23    0.01     a      1.0
   0.7480    0.3988      0.3988      5.675     2.511    1.1627   1e    20-23    0.01     a      1.0
   0.7856    0.3624      0.3624      4.863     2.151    1.1278   1e    20-23    0.01     a      1.0
   0.7999    0.3541      0.3541      4.691     2.075    1.0818   1e    20-23    0.01     a      1.0
   0.8000    0.3490      0.3490      4.587     2.029    1.1057   1e    20-23    0.01     a      1.0
   0.3628    1.0000      1.0           -         -         -     2e    20-23    0.01     a       -  
   0.3917    0.9589      0.9589        -         -         -     2e    20-23    0.01     a       -  
   0.4100    0.9771      0.9771        -         -         -     2e    20-23    0.01     a       -  
   0.4751    0.9611      0.9611        -         -         -     2e    20-23    0.01     a       -  
   0.5789    0.9526      0.9526        -         -         -     2e    20-23    0.01     a       -  
   0.5870    0.5697      0.5697     11.328     5.011    1.0689   2e    20-23    0.01     a      0.0
   0.6094    0.5491      0.5491     10.419     4.609    1.0804   2e    20-23    0.01     a      0.0
   0.6271    0.5367      0.5367      9.911     4.384    1.0701   2e    20-23    0.01     a      0.0
   0.6421    0.5193      0.5193      9.243     4.089    1.0893   2e    20-23    0.01     a      0.0
   0.6513    0.5004      0.5004      8.569     3.791    1.1372   2e    20-23    0.01     a      0.0
   0.6741    0.4771      0.4771      7.806     3.453    1.1482   2e    20-23    0.01     a      0.0
   0.6920    0.4595      0.4595      7.274     3.218    1.1504   2e    20-23    0.01     a      0.0
   0.7085    0.4404      0.4404      6.733     2.979    1.1632   2e    20-23    0.01     a      0.0
   0.7241    0.4217      0.4217      6.239     2.760    1.1760   2e    20-23    0.01     a      0.0
   0.7480    0.3908      0.3908      5.489     2.428    1.2023   2e    20-23    0.01     a      0.0
   0.7641    0.3740      0.3740      5.112     2.261    1.1963   2e    20-23    0.01     a      0.0
   0.7744    0.3582      0.3582      4.775     2.112    1.2169   2e    20-23    0.01     a      0.0
   0.7897    0.3419      0.3419      4.445     1.966    1.2072   2e    20-23    0.01     a      0.0
   0.8000    0.3305      0.3305      4.224     1.868    1.2008   2e    20-23    0.01     a      0.0
   0.2000    1.0000      0.9860        -         -         -     1g    20-23    0.01     a       -  
   0.2674    0.9894      0.9754        -         -         -     1g    20-23    0.01     a       -  
   0.4272    0.9707      0.9567        -         -         -     1g    20-23    0.01     a       -  
   0.5309    0.9678      0.9538        -         -         -     1g    20-23    0.01     a       -  
   0.5876    0.9799      0.9659        -         -         -     1g    20-23    0.01     a       -  
   0.6367    0.9647      0.9507        -         -         -     1g    20-23    0.01     a       -  
   0.6594    0.8987      0.8847        -         -         -     1g    20-23    0.01     a       -  
   0.6695    0.8792      0.8652        -         -         -     1g    20-23    0.01     a       -  
   0.6753    0.8613      0.8473        -         -         -     1g    20-23    0.01     a       -  
   0.6810    0.8323      0.8183        -         -         -     1g    20-23    0.01     a       -  
   0.6867    0.8061      0.7921        -         -         -     1g    20-23    0.01     a       -  
   0.6921    0.7783      0.7643        -         -         -     1g    20-23    0.01     a       -  
   0.6993    0.7334      0.7194        -         -         -     1g    20-23    0.01     a       -  
   0.7023    0.7093      0.6953        -         -         -     1g    20-23    0.01     a       -  
   0.7065    0.6645      0.6505        -         -         -     1g    20-23    0.01     a       -  
   0.7090    0.6296      0.6156        -         -         -     1g    20-23    0.01     a       -  
   0.7111    0.5986      0.5846        -         -         -     1g    20-23    0.01     a       -  
   0.7132    0.5568      0.5428        -         -         -     1g    20-23    0.01     a       -  
   0.7153    0.5147      0.5007        -         -         -     1g    20-23    0.01     a       -  
   0.7172    0.4799      0.4659        -         -         -     1g    20-23    0.01     a       -  
   0.7200    0.4344      0.4204      6.206     2.745    1.2031   1g    20-23    0.01     a      1.0
   0.7259    0.4273      0.4133      6.027     2.666    1.2080   1g    20-23    0.01     a      1.0
   0.7615    0.4064      0.3924      5.525     2.444    1.1207   1g    20-23    0.01     a      1.0
   0.7703    0.3974      0.3834      5.320     2.353    1.1149   1g    20-23    0.01     a      1.0
   0.7772    0.3901      0.3761      5.158     2.282    1.1107   1g    20-23    0.01     a      1.0
   0.7924    0.3781      0.3641      4.899     2.167    1.0795   1g    20-23    0.01     a      1.0
   0.8045    0.3636      0.3496      4.599     2.034    1.0750   1g    20-23    0.01     a      1.0
   0.8116    0.3536      0.3396      4.400     1.946    1.0783   1g    20-23    0.01     a      1.0
   0.2000    1.0000      1.0130        -         -         -     2g    20-23    0.01     a      0.0
   0.2317    0.9863      0.9993        -         -         -     2g    20-23    0.01     a      0.0
   0.3453    0.9824      0.9954        -         -         -     2g    20-23    0.01     a      0.0
   0.4568    0.9797      0.9927        -         -         -     2g    20-23    0.01     a      0.0
   0.5262    0.9787      0.9917        -         -         -     2g    20-23    0.01     a      0.0
   0.5796    0.9609      0.9739        -         -         -     2g    20-23    0.01     a      0.0
   0.6018    0.9493      0.9623        -         -         -     2g    20-23    0.01     a      0.0
   0.6287    0.9286      0.9416        -         -         -     2g    20-23    0.01     a      0.0
   0.6468    0.9036      0.9166        -         -         -     2g    20-23    0.01     a      0.0
   0.6648    0.8780      0.8910        -         -         -     2g    20-23    0.01     a      0.0
   0.6824    0.8153      0.8283        -         -         -     2g    20-23    0.01     a      0.0
   0.6875    0.7804      0.7934        -         -         -     2g    20-23    0.01     a      0.0
   0.6924    0.7488      0.7618        -         -         -     2g    20-23    0.01     a      0.0
   0.6948    0.7213      0.7343        -         -         -     2g    20-23    0.01     a      0.0
   0.6989    0.7011      0.7141        -         -         -     2g    20-23    0.01     a      0.0
   0.7035    0.6587      0.6717        -         -         -     2g    20-23    0.01     a      0.0
   0.7064    0.6210      0.6340        -         -         -     2g    20-23    0.01     a      0.0
   0.7086    0.5827      0.5957        -         -         -     2g    20-23    0.01     a      0.0
   0.7120    0.5132      0.5262        -         -         -     2g    20-23    0.01     a      0.0
   0.7127    0.4969      0.5099        -         -         -     2g    20-23    0.01     a      0.0
   0.7138    0.4716      0.4846        -         -         -     2g    20-23    0.01     a      0.0
   0.7162    0.4153      0.4283        -         -         -     2g    20-23    0.01     a      0.0
   0.7178    0.4063      0.4193      6.178     2.733    1.2198   2g    20-23    0.01     a      1.0
   0.7423    0.3747      0.3877      5.417     2.396    1.2502   2g    20-23    0.01     a      1.0
   0.7835    0.3553      0.3683      4.988     2.207    1.1116   2g    20-23    0.01     a      1.0
   0.7925    0.3482      0.3612      4.838     2.140    1.0926   2g    20-23    0.01     a      1.0
   0.8023    0.3421      0.3551      4.711     2.084    1.0627   2g    20-23    0.01     a      1.0

Notes and References

Symbols: aW - water activity; mfs(orig.) - total mass fraction of solutes in the particles (corrected by Choi and Chan from from those given in their paper, see http://ihome.ust.hk/~keckchan/hygroscopic.html); mfs - same as mfs(orig.) but with particles 1g and 2g restandardised to improve agreement with the other particles at high relative humidity; prefix m denotes the molality of each solute (only for those particles that appear to be fully aqueous); osm - stoichiometric osmotic coefficient, equal to -ln(aW)/(0.0180152 × (2×mNaCl + mH2Glut)); np - particle number (suffix e indicates an edb evaporation experiment in an atmosphere of decreasing relative humidity, and suffix g particle growth in an atmosphere of increasing relative humidity); t - experimental temperature (^oC); uncert. - probable uncertainty in the water activity; ref. - source of data; weight - the weight assigned in the fit of the model to determine parameter values.
Source: a - M. Y. Choi and C. K. Chan (2002) Environ. Sci. Technol. 36, 2422-2428.
The uncertainty associated with mfs for the edb experiments (and so also the molality m) has three sources: the determination of the dc balancing voltage, solute evaporation, and the standardisation of the particle composition to a single reference state (either dilute solution or solid particle). An overall uncertainty of at least ±0.01 seems likely. The corresponding values for the molality of each component can be obtained using the conversion equation m = (mfs/(1 - mfs)) × (1000/(2MW) where MW is the molar mass of either the NaCl (58.44 g) or the acid (132.11 g).

(3) Polytherm of Solubilities in Aqueous H2Glut + NH4NO3 Mixtures

 wt%NH4NO3   wt%H2Glut    solid       t        ref.    weight                         
    0          25.0        0,1       -2.9       a        -         
    17.0       16.4        0,1       -9.6       a        -                        
    35.0       13.2        0,1      -17.4       a        -                        
    36.2       13.0        0,1,2    -18.5       a        -                        
    43.8       13.0        1,2       -7.2       a        -                        
    47.0       15.8        1,2       13.5       a        -                        
    53.6       16.0        1,2,3     22.6       a        -                        
    52.4       23.8        3,?       33.5       a        -                      
    52.0       26.0        1,3       36.9       a        -                      
    50.4       30.0        1,3       42.0       a        -                      
    45.6       37.8        1,3       51.0       a        -                      
    37.2       50.0        1,3       62.4       a        -                      
    40.0        6.0        1,?      -17.5       a        -                      
    43.0        0.0        0,2      -17.0       a        -                      
    61.2        8.0        2,?       24.8       a        -                      
    66.6        3.6        2,3       28.5       a        -                      
    71.0        0.0        2,3       32.5       a        -

Notes and References

Symbols: prefix wt% indicates weight percent in solution; solid: 0 - ice, 1 - H2Glut(s), 2 - (alpha)NH4NO3, 3 - (beta)NH4NO3; t - experimental temperature (^oC); ref. - source of data; weight - the weight assigned in the fit of the model to determine parameter values.
Source: a - T. N. Kuldashev, A. Kh. Narkhodjaev, and S. Tukhtaev (1994) Uzbekskii Khimicheskii Zh. 3, 3-4.
Solids marked as '?' were not legible on our copy of the article.