Osmotic Coefficients of Aqueous H2SO4

The experimental data are listed in the tables below. Notes at the end of each one define the tabulated quantities, and identify the sources of the measurements.

New measurements by the following group have been made since the work of Clegg and Brimblecombe (1995):

These freezing points with respect to ice are tabulated here.

1.  Stoichiometric Osmotic Coefficients of Aqueous H2SO4 from Isopiestic or Vapour Pressure Measurements

   mH2SO4       osm      T       ref.  weight   method 
   4.3760     1.2004    298.15    a     0.0       1
   4.8810     1.2815    298.15    a     1.0       1
   5.0020     1.2980    298.15    a     0.0       1
   5.1440     1.3196    298.15    a     0.0       1
   6.0560     1.4517    298.15    a     1.0       1
   6.8650     1.5568    298.15    a     1.0       1
   7.9370     1.6828    298.15    a     1.0       1
   2.0831     0.85936   298.15    b     1.0       2
   3.0051     0.99378   298.15    b     1.0       2
   3.1495     1.01556   298.15    b     1.0       2
   3.4061     1.05403   298.15    b     1.0       2
   3.5567     1.07730   298.15    b     1.0       2
   3.5738     1.07912   298.15    b     1.0       2
   3.9005     1.13328   298.15    b     1.0       2
   3.9455     1.13787   298.15    b     1.0       2
   4.0465     1.15449   298.15    b     1.0       2
   4.3242     1.20112   298.15    b     1.0       2
   4.3481     1.20247   298.15    b     1.0       2
   4.3537     1.20577   298.15    b     1.0       2
   0.0958     0.67520   298.15    c     0.25      2
   0.1881     0.66480   298.15    c     0.25      2
   0.2867     0.66132   298.15    c     0.25      2
   0.3842     0.66463   298.15    c     0.25      2
   0.5197     0.67204   298.15    c     0.25      2
   0.6401     0.68200   298.15    c     0.25      2
   0.7335     0.69083   298.15    c     0.25      2
   0.8820     0.70534   298.15    c     0.25      2
   1.0460     0.72390   298.15    c     0.25      2
   1.2680     0.74999   298.15    c     0.25      2
   1.5440     0.78577   298.15    c     0.25      2
   2.1830     0.87445   298.15    c     0.25      2
   2.8300     0.96496   298.15    c     0.25      2
   3.1560     1.01363   298.15    c     0.25      2
   3.8150     1.11232   298.15    c     0.00      2
   4.3490     1.20584   298.15    c     0.25      2
   0.0909     0.68573   298.15    d     0.00      3
   0.0908     0.68199   298.15    d     0.25      3
   0.0908     0.68435   298.15    d     0.25      3
   0.0940     0.68124   298.15    d     0.25      3
   0.1858     0.66973   298.15    d     0.25      3
   0.1889     0.66712   298.15    d     0.25      3
   0.1901     0.66871   298.15    d     0.25      3
   0.1965     0.66762   298.15    d     0.25      3
   0.2792     0.66849   298.15    d     0.25      3
   0.2846     0.66796   298.15    d     0.25      3
   0.3662     0.67079   298.15    d     0.25      3
   0.3742     0.67144   298.15    d     0.25      3
   0.4609     0.67575   298.15    d     0.25      3
   0.4705     0.67617   298.15    d     0.25      3
   0.6222     0.68300   298.15    d     0.25      3
   0.8867     0.70243   298.15    d     0.25      3
   0.8892     0.70233   298.15    d     0.25      3
   1.3651     0.76309   298.15    d     0.75      3
   1.7065     0.80488   298.15    d     0.75      3
   1.9351     0.83697   298.15    d     0.75      3
   1.9998     0.84440   298.15    d     0.75      3
   2.6023     0.93105   298.15    d     0.75      3
   2.8298     0.96633   298.15    d     0.75      3
   0.09082    0.67958   298.15    d     0.25      2
   0.09079    0.68546   298.15    d     0.00      2
   0.09405    0.67951   298.15    d     0.25      2
   0.18577    0.66674   298.15    d     0.25      2
   0.18892    0.66569   298.15    d     0.25      2
   0.19006    0.66718   298.15    d     0.25      2
   0.19655    0.66602   298.15    d     0.25      2
   0.27916    0.66632   298.15    d     0.25      2
   0.28463    0.66682   298.15    d     0.25      2
   0.36619    0.67098   298.15    d     0.25      2
   0.37419    0.67000   298.15    d     0.25      2
   0.46089    0.67468   298.15    d     0.25      2
   0.47046    0.67568   298.15    d     0.25      2
   0.62219    0.68269   298.15    d     0.25      2
   0.88666    0.70431   298.15    d     0.25      2
   0.88920    0.70336   298.15    d     0.25      2
   1.0109     0.72299   298.15    d     0.75      2
   1.3651     0.76535   298.15    d     0.75      2
   1.7065     0.80758   298.15    d     0.75      2
   1.9351     0.84090   298.15    d     0.75      2
   1.9998     0.84816   298.15    d     0.75      2
   2.6023     0.93390   298.15    d     0.75      2
   2.8298     0.96823   298.15    d     0.75      2
   3.1663     1.01900   298.15    d     0.75      2
   3.3892     1.05149   298.15    d     0.75      2
   3.9291     1.13661   298.15    d     0.75      2
   4.3145     1.19806   298.15    d     0.75      2
   4.3741     1.19954   298.15    d     0.00      2
   0.1946     0.66864   298.15    e     0.25      3
   0.2213     0.66712   298.15    e     0.25      3
   0.3495     0.66907   298.15    e     0.25      3
   0.3614     0.67183   298.15    e     0.25      3
   0.4832     0.67574   298.15    e     0.25      3
   0.5833     0.68227   298.15    e     0.25      3
   0.6376     0.68223   298.15    e     0.25      3
   0.7101     0.69101   298.15    e     0.25      3
   0.7492     0.69508   298.15    e     0.25      3
   0.7908     0.69972   298.15    e     0.25      3
   0.8666     0.70623   298.15    e     0.25      3
   0.9068     0.71021   298.15    e     0.25      3
   0.9788     0.72047   298.15    e     0.25      3
   1.015      0.72471   298.15    e     0.25      3
   1.024      0.72547   298.15    e     0.25      3
   1.051      0.72829   298.15    e     0.25      3
   1.151      0.73838   298.15    e     0.25      3
   1.185      0.74574   298.15    e     0.25      3
   1.316      0.75898   298.15    e     0.25      3
   1.368      0.76385   298.15    e     0.25      3
   1.456      0.77366   298.15    e     0.25      3
   1.575      0.79156   298.15    e     0.25      3
   1.627      0.79410   298.15    e     0.25      3
   1.776      0.81746   298.15    e     0.25      3
   1.873      0.82915   298.15    e     0.25      3
   1.873      0.82985   298.15    e     0.25      3
   1.951      0.83991   298.15    e     0.25      3
   2.108      0.86098   298.15    e     0.25      3
   2.127      0.85995   298.15    e     0.25      3
   2.203      0.86996   298.15    e     0.25      3
   2.283      0.88593   298.15    e     0.25      3
   2.302      0.88789   298.15    e     0.25      3
   2.308      0.89096   298.15    e     0.25      3
   2.412      0.90438   298.15    e     0.25      3
   2.412      0.90467   298.15    e     0.25      3
   2.476      0.91131   298.15    e     0.25      3
   2.518      0.91460   298.15    e     0.25      3
   2.544      0.92057   298.15    e     0.25      3
   2.629      0.93643   298.15    e     0.25      3
   2.639      0.93751   298.15    e     0.25      3
   2.641      0.93707   298.15    e     0.25      3
   2.663      0.94583   298.15    e     0.25      3
   2.696      0.95142   298.15    e     0.25      3
   2.711      0.95178   298.15    e     0.25      3
   2.757      0.95622   298.15    e     0.25      3
   2.777      0.95696   298.15    e     0.25      3
   2.800      0.96349   298.15    e     0.25      3
   2.866      0.97266   298.15    e     0.25      3
   2.867      0.97671   298.15    e     0.25      3
   3.024      1.00019   298.15    e     0.25      3
   3.032      1.00228   298.15    e     0.25      3
   3.120      1.01811   298.15    e     0.25      3
   3.136      1.02048   298.15    e     0.25      3
   1.918      0.83050   298.15    f     1.0       4
   2.239      0.87405   298.15    f     0.0       4
   3.659      1.09668   298.15    f     1.0       4
   3.776      1.11406   298.15    f     1.0       4
   4.218      1.18676   298.15    f     1.0       4
   4.279      1.19312   298.15    f     1.0       4
   4.339      1.20310   298.15    f     1.0       4
   4.947      1.29944   298.15    f     1.0       4
   5.454      1.36761   298.15    f     1.0       4
   5.833      1.42439   298.15    f     1.0       4
   6.671      1.53651   298.15    f     1.0       4
   7.540      1.64578   298.15    f     1.0       4
   8.383      1.74017   298.15    f     1.0       4
   9.400      1.83460   298.15    f     1.0       4
  10.135      1.89565   298.15    f     1.0       4
  11.235      1.98495   298.15    f     1.0       4
  12.720      2.07186   298.15    f     1.0       4
  15.120      2.19087   298.15    f     1.0       4
  20.650      2.35628   298.15    f     1.0       4
  22.630      2.38835   298.15    f     1.0       4
   0.073      0.6345    298.15    g     0.0       4
   0.241      0.6544    298.15    g     0.0       4
   0.315      0.6547    298.15    g     0.0       4
   0.549      0.6696    298.15    g     0.0       4
   0.636      0.6759    298.15    g     0.0       4
   0.892      0.7015    298.15    g     0.0       4
   1.097      0.7209    298.15    g     0.0       4
   1.282      0.74230   298.15    g     0.0       4
   1.671      0.80270   298.15    g     1.0       4
   1.772      0.81460   298.15    g     1.0       4
   2.009      0.84490   298.15    g     1.0       4
   2.468      0.90210   298.15    g     0.0       4
   2.871      0.97370   298.15    g     1.0       4
   0.34619    0.66456   298.15    h     1.0       2
   0.37271    0.66542   298.15    h     1.0       2
   0.48610    0.67204   298.15    h     1.0       2
   0.50343    0.67247   298.15    h     1.0       2
   0.60586    0.68031   298.15    h     1.0       2
   0.61247    0.68080   298.15    h     1.0       2
   0.70134    0.68850   298.15    h     1.0       2
   0.70516    0.68883   298.15    h     1.0       2
   0.79361    0.69804   298.15    h     1.0       2
   0.79934    0.69833   298.15    h     1.0       2
   0.90220    0.70856   298.15    h     1.0       2
   0.95040    0.71419   298.15    h     1.0       2
   1.0218     0.72171   298.15    h     1.0       2
   1.0751     0.72847   298.15    h     1.0       2
   1.1185     0.73250   298.15    h     1.0       2
   1.1282     0.73456   298.15    h     1.0       2
   1.2301     0.74712   298.15    h     1.0       2
   1.2514     0.74932   298.15    h     1.0       2
   1.3901     0.76658   298.15    h     1.0       2
   1.4815     0.77867   298.15    h     1.0       2
   1.6240     0.79665   298.15    h     1.0       2
   1.7355     0.81097   298.15    h     1.0       2
   1.7886     0.81825   298.15    h     1.0       2
   1.8285     0.82376   298.15    h     1.0       2
   1.9780     0.84375   298.15    h     1.0       2
   2.1108     0.86221   298.15    h     1.0       2
   2.3366     0.89431   298.15    h     1.0       2
   2.6413     0.93842   298.15    h     1.0       2
   2.7521     0.95516   298.15    h     1.0       2
   2.7926     0.96100   298.15    h     1.0       2
   3.2236     1.02737   298.15    h     1.0       2
   3.3335     1.04365   298.15    h     1.0       2
   3.4379     1.05994   298.15    h     1.0       2
   3.4872     1.06728   298.15    h     1.0       2
   3.5536     1.07813   298.15    h     1.0       2
   3.5573     1.07875   298.15    h     1.0       2
   3.6148     1.08741   298.15    h     1.0       2
   3.6827     1.09725   298.15    h     1.0       2
   3.7353     1.10609   298.15    h     1.0       2
   3.9047     1.13344   298.15    h     1.0       2
   4.0512     1.15616   298.15    h     1.0       2
   4.2265     1.18674   298.15    h     1.0       2
   4.3615     1.20807   298.15    h     1.0       2
   4.3599     1.20935   298.15    h     1.0       2
   1.1329     0.73400   298.15    i     0.1       4
   2.5490     0.92680   298.15    i     0.1       4
   3.3987     1.04610   298.15    i     0.0       4
   4.3697     1.20550   298.15    i     0.1       4
   5.4902     1.38360   298.15    i     0.0       4
   6.7973     1.55260   298.15    i     0.1       4
   8.3422     1.71600   298.15    i     0.1       4
  10.1960     1.86770   298.15    i     0.0       4
  12.4618     2.01010   298.15    i     0.0       4
  15.2940     2.17120   298.15    i     0.0       4
  18.9354     2.27860   298.15    i     0.0       4
  23.7907     2.56310   298.15    i     0.0       4
   1.1328     0.69980   298.15    j     0.0       4
   2.5490     0.91020   298.15    j     0.0       4
   4.3697     1.22230   298.15    j     0.0       4
   6.7973     1.56210   298.15    j     0.0       4
   8.3422     1.72550   298.15    j     0.1       4
  10.1960     1.89300   298.15    j     0.1       4
  12.4618     2.07490   298.15    j     0.0       4
  15.2940     2.23090   298.15    j     0.0       4
  18.9354     2.31960   298.15    j     0.1       4
  23.7907     2.41100   298.15    j     0.1       4
  30.587      2.464     298.15    j     0.0       4
  40.782      2.504     298.15    j     0.0       4
   4.3555     1.20838   298.15    k     1.0       2
   4.3181     1.20212   298.15    k     1.0       2
   4.0952     1.16618   298.15    k     1.0       2
   3.9153     1.13631   298.15    k     1.0       2
   3.7477     1.10889   298.15    k     1.0       2
   3.5780     1.08263   298.15    k     1.0       2
   3.4443     1.06100   298.15    k     1.0       2
   3.2965     1.03806   298.15    k     1.0       2
   3.0323     0.99788   298.15    k     1.0       2
   2.7721     0.95934   298.15    k     1.0       2
   2.5275     0.92192   298.15    k     1.0       2
   2.3034     0.88946   298.15    k     1.0       2
   2.2993     0.88910   298.15    k     1.0       2
   2.1296     0.86479   298.15    k     1.0       2
   2.1114     0.86196   298.15    k     1.0       2
   2.0910     0.85946   298.15    k     1.0       2
   0.16953    0.66803   298.15    l     1.0       3
   0.15862    0.66778   298.15    l     1.0       3
   0.14817    0.66778   298.15    l     1.0       3
   0.14053    0.66806   298.15    l     1.0       3
   0.44226    0.66692   298.15    m     1.0       3
   0.45410    0.66699   298.15    m     1.0       3
   0.48702    0.67086   298.15    m     1.0       3
   4.4197     1.2154    298.15    n     1.0       2
   4.2431     1.1880    298.15    n     1.0       2
   4.0255     1.1513    298.15    n     1.0       2
   4.0669     1.1585    298.15    n     1.0       2
  13.880      2.13600   298.15    o     1.0       4  
  18.510      2.30980   298.15    o     1.0       4
  27.740      2.43400   298.15    o     1.0       4
   0.48348    0.65699   323.15    p     1.0       2
   0.41644    0.65315   323.15    p     1.0       2
   0.35785    0.64884   323.15    p     1.0       2
   0.30366    0.65034   323.15    p     0.0       2
   0.25758    0.64818   323.15    p     0.0       2
   0.25754    0.64524   323.15    p     1.0       2
   0.18939    0.64996   323.15    p     0.0       2
   0.75427    0.68122   323.15    p     1.0       2
   0.49867    0.65967   323.15    p     1.0       2
   0.51328    0.65938   323.15    p     1.0       2
   0.62428    0.66861   323.15    p     1.0       2
   0.86313    0.69151   323.15    p     1.0       2
   1.00724    0.70623   323.15    p     1.0       2
   1.17741    0.72456   323.15    p     1.0       2
   1.40172    0.74902   323.15    p     1.0       2
   1.47854    0.75658   323.15    p     1.0       2
   1.55297    0.76754   323.15    p     1.0       2
   1.78155    0.79353   323.15    p     1.0       2
   2.21655    0.84729   323.15    p     1.0       2
   2.11572    0.82994   323.15    p     0.0       2
   2.54162    0.88993   323.15    p     1.0       2
   3.90137    1.07018   323.15    p     1.0       2
   3.84788    1.06224   323.15    p     1.0       2
   4.17546    1.10770   323.15    p     1.0       2
   3.57396    1.02585   323.15    p     1.0       2
   3.51826    1.01843   323.15    p     1.0       2
   3.10283    0.96363   323.15    p     1.0       2
   1.85523    0.80420   323.15    p     1.0       2
   0.75731    0.68167   323.15    p     1.0       2
   0.78004    0.68432   323.15    p     1.0       2
   1.01753    0.70779   323.15    p     1.0       2
   1.59317    0.77275   323.15    p     1.0       2
   1.76761    0.79354   323.15    p     1.0       2
   1.32924    0.74210   323.15    p     1.0       2
   1.49506    0.76104   323.15    p     1.0       2
   1.91911    0.81210   323.15    p     1.0       2
   2.48833    0.88348   323.15    p     1.0       2
   3.02716    0.95405   323.15    p     1.0       2
   3.59460    1.02877   323.15    p     1.0       2
   3.87614    1.06748   323.15    p     1.0       2
   3.19111    0.97970   323.15    p     0.0       2
   3.25903    0.98452   323.15    p     1.0       2
   2.89278    0.93643   323.15    p     1.0       2
   2.19278    0.84626   323.15    p     1.0       2
   1.033      0.7305    273.15    q     0.25      5
   1.450      0.7935    273.15    q     0.0       2
   2.075      0.8856    273.15    q     0.25      2
   2.186      0.9091    273.15    q     0.0       2
   2.966      1.0314    273.15    q     0.25      2
   3.086      1.0561    273.15    q     0.25      2
   3.576      1.1522    273.15    q     0.25      2
   4.087      1.2495    273.15    q     0.25      2
   4.096      1.2467    273.15    q     0.25      2
   16.326     2.2355    298.15    r     1.0       6
   16.821     2.2529    298.15    r     1.0       6
   17.346     2.2705    298.15    r     1.0       6
   17.906     2.2881    298.15    r     1.0       6
   18.503     2.3058    298.15    r     1.0       6
   19.141     2.3237    298.15    r     1.0       6
   19.825     2.3408    298.15    r     1.0       6
   20.559     2.3572    298.15    r     1.0       6
   21.349     2.3730    298.15    r     1.0       6
   22.203     2.3879    298.15    r     1.0       6
   23.129     2.4013    298.15    r     1.0       6
   24.134     2.4131    298.15    r     1.0       6
   25.231     2.4219    298.15    r     1.0       6
   26.433     2.4288    298.15    r     1.0       6
   27.754     2.4326    298.15    r     1.0       6
   28.466     2.4332    298.15    r     1.0       6
   29.215     2.4328    298.15    r     1.0       6
   30.005     2.4323    298.15    r     1.0       6
   30.838     2.4304    298.15    r     1.0       6
   31.719     2.4278    298.15    r     1.0       6
   32.652     2.4245    298.15    r     1.0       6
   33.642     2.4200    298.15    r     1.0       6
   34.693     2.4142    298.15    r     1.0       6
   35.812     2.4067    298.15    r     1.0       6
   37.006     2.3983    298.15    r     1.0       6
   38.282     2.3885    298.15    r     1.0       6
   39.649     2.3770    298.15    r     1.0       6

Notes and References


2.  Stoichiometric Osmotic Coefficients of Aqueous H2SO4 From Freezing Temperatures With Respect to Ice

   mH2SO4       osm       T      ref.  weight     
   0.1005     0.7085    272.753   a    0.0
   0.2021     0.6835    272.380   a    0.001
   0.3038     0.6828    271.994   a    0.001
   1.0395     0.7241    268.961   a    0.001
   1.5892     0.8427    265.707   a    0.001
   2.1652     0.9399    261.854   a    0.001
   2.7680     1.0605    256.875   a    0.001
   0.1005     0.7085    272.753   b    0.001
   1.0395     0.7243    268.960   b    0.001
   1.5892     0.8427    265.707   b    0.001
   2.1652     0.9399    261.854   b    0.001
   2.7680     1.0604    256.875   b    0.001
   0.001348   0.9312    273.143   c    0.0
   0.003591   0.9189    273.132   c    0.0
   0.005825   0.9020    273.121   c    0.0
   0.008053   0.8640    273.111   c    0.0
   0.01027    0.8504    273.101   c    0.0
   0.01348    0.8288    273.088   c    0.0
   0.05679    0.7358    272.917   c    0.0
   0.07736    0.7157    272.841   c    0.0
   0.09725    0.7079    272.766   c    0.0
   0.03142    0.7763    273.014   d    0.0
   0.06489    0.7324    272.885   d    0.0
   0.10770    0.7078    272.725   d    0.0
   0.0078672  0.8662    273.112   e    0.0
   0.0733023  0.7267    272.853   e    0.0
   0.0841741  0.7117    272.816   e    0.0
   0.1054870  0.7090    272.733   e    0.0
   0.1250920  0.6940    272.666   e    0.0
   0.1436170  0.6969    272.592   e    0.001
   0.1653680  0.6867    272.517   e    0.001
   0.1853060  0.6824    272.445   e    0.001
   0.0026925  0.9324    273.136   e    0.0
   0.0073672  0.8520    273.115   e    0.0
   0.0103288  0.8507    273.101   e    0.0
   0.0143046  0.8400    273.083   e    0.0
   0.0157158  0.8216    273.078   e    0.0
   0.0210062  0.7940    273.057   e    0.0
   0.0265172  0.7845    273.034   e    0.0
   0.0313263  0.7843    273.013   e    0.0
   0.0364480  0.7627    272.995   e    0.0
   0.0415748  0.7635    272.973   e    0.0
   0.0527401  0.7379    272.933   e    0.0
   0.0630419  0.7226    272.896   e    0.0
   0.0733023  0.7193    272.856   e    0.0
   0.0841741  0.7074    272.818   e    0.0
   0.1054870  0.7005    272.738   e    0.0
   0.1250920  0.6883    272.670   e    0.0
   0.1436170  0.6869    272.600   e    0.001
   0.1653680  0.6801    272.523   e    0.001
   0.1853060  0.6767    272.451   e    0.001
   0.2076570  0.6808    272.362   e    0.001
   0.2943600  0.6705    272.050   e    0.001
   0.3162070  0.6753    271.960   e    0.001
   0.3689280  0.6664    271.780   e    0.001
   0.4211840  0.6732    271.570   e    0.001
   0.0081531  0.8798    273.110   f    0.0
   0.0143046  0.8475    273.082   f    0.0
   0.0162477  0.8223    273.076   f    0.0
   0.0182938  0.8136    273.067   f    0.0
   0.0204738  0.8067    273.058   f    0.0
   0.0246830  0.7956    273.040   f    0.0
   0.0286085  0.7949    273.023   f    0.0
   0.0329885  0.7888    273.005   f    0.0
   0.0364480  0.7764    272.992   f    0.0
   0.0409684  0.7648    272.975   f    0.0
   0.0461717  0.7594    272.954   f    0.0
   0.0510714  0.7540    272.935   f    0.0
   0.123452   0.7044    272.665   f    0.0
   0.144173   0.6982    272.589   f    0.001
   0.165389   0.6950    272.509   f    0.001
   0.186438   0.6914    272.431   f    0.001
   0.001339   0.9375    273.143   g    0.0
   0.002243   0.9194    273.138   g    0.0
   0.004175   0.9020    273.129   g    0.0
   0.009420   0.8586    273.105   g    0.0
   0.01646    0.8248    273.074   g    0.0
   0.0041400  0.9053    273.129   h    0.0
   0.0060200  0.8847    273.120   h    0.0
   0.0009760  0.9554    273.145   h    0.0
   0.0031240  0.9185    273.134   h    0.0
   0.0051260  0.8956    273.124   h    0.0
   0.0063320  0.8836    273.119   h    0.0
   0.0076490  0.8675    273.113   h    0.0
   0.0007826  0.9624    273.146   h    0.0
   0.0011087  0.9543    273.144   h    0.0
   0.0023097  0.9239    273.138   h    0.0
   0.0045200  0.8966    273.127   h    0.0
   0.0074880  0.8693    273.114   h    0.0
   0.0111160  0.8421    273.098   h    0.0
   0.0166120  0.8237    273.074   h    0.0
   0.0220140  0.8040    273.051   h    0.0
   0.0357780  0.7724    272.996   h    0.0
   0.0541600  0.7444    272.925   h    0.0
   0.1055900  0.7151    272.729   h    0.0
   0.1051600  0.7152    272.731   h    0.0
   0.0009783  0.9715    273.145   h    0.0
   0.0013135  0.9557    273.143   h    0.0
   0.0017968  0.9382    273.141   h    0.0
   0.0028863  0.9195    273.135   h    0.0
   0.0009289  0.9653    273.145   h    0.0
   0.0011841  0.9541    273.144   h    0.0
   0.0019566  0.9349    273.140   h    0.0
   0.0312230  0.7806    273.014   h    0.0
   0.0390920  0.7657    272.983   h    0.0
   0.0694949  0.7293    272.867   h    0.0
   0.1012600  0.7151    272.746   h    0.0
   0.5781220  0.7049    270.88    i    0.5
   0.9369810  0.7363    269.31    i    0.5
   1.22261    0.7557    268.01    i    0.5
   1.56467    0.8060    266.14    i    0.5
   2.08168    0.8903    262.86    i    0.5
   2.62644    0.9941    258.67    i    0.5
   3.20450    1.1236    253.20    i    0.5
   3.62508    1.2279    248.49    i    0.5
   3.94444    1.3177    244.34    i    0.5
   4.32688       -      238.81    i    0.5
   4.76010       -      231.97    i    0.5
   4.93685       -      228.17    i    0.0
   5.14324       -      223.71    i    0.0
   5.36114       -      218.53    i    0.0
   5.55844       -      213.92    i    0.0
   5.66049       -      211.24    i    0.0
   5.81299       -      207.84    i    0.0
   5.95277       -      203.93    i    0.0
   6.01884       -      201.94    i    0.0

Notes and References


3.  Freezing Points of Single Suspended Aerosol Droplets of Aqueous H2SO4, with Respect to Ice, to Very Low Temperature

   wt%           T       ref.                wt%           T       ref.
  17.6914      261.250     a                36.3336      210.185     a     
  18.1207      261.000     a                36.7625      209.159     a     
  18.3205      260.750     a                36.6944      208.128     a     
  19.5995      260.495     a                37.2507      207.061     a     
  18.8115      260.245     a                37.1084      206.023     a     
  19.4848      259.995     a                36.7345      204.963     a     
  19.2037      259.745     a                36.8423      203.946     a     
  20.9063      258.445     a                35.7531      202.901     a     
  21.7632      257.430     a                36.3493      201.864     a     
  22.8937      256.430     a                37.7526      200.793     a     
  22.3697      255.430     a                36.7549      199.729     a                     
  23.2103      254.430     a                37.0253      198.694     a                     
  23.5377      253.430     a                37.7878      197.616     a                     
  24.3890      252.430     a                37.9295      196.589     a                     
  24.5390      251.430     a                36.9231      195.525     a                     
  26.3507      250.430     a                37.2569      194.495     a                     
  26.4782      249.430     a                38.0769      193.455     a                     
  26.6860      248.420     a                38.4351      192.440     a                     
  26.8745      247.408     a                38.1679      191.420     a                     
  27.4107      246.356     a                38.5183      190.400     a                     
  27.7431      245.348     a                38.7195      189.400     a                     
  28.6272      244.280     a                38.0009      188.390     a                     
  28.6835      243.238     a                38.3090      187.365     a                     
  28.2526      242.172     a                38.0224      186.345     a                     
  30.6572      241.155     a                38.7909      185.335     a                     
  29.8611      240.099     a                39.8746      184.290     a                     
  30.4050      239.025     a                39.3980      183.255     a                     
  29.6724      238.015     a                36.9582      182.245     a                     
  30.9006      233.478     a                38.7909      181.115     a                     
  32.2498      232.426     a                38.3008      180.065     a                     
  32.5173      231.388     a                38.6903      179.037     a                     
  32.9668      230.264     a                40.3550      178.008     a                     
  33.6164      229.199     a                39.8746      176.952     a                     
  32.5198      228.154     a                38.9252      175.896     a                     
  32.2112      227.077     a                39.3980      174.883     a                     
  33.0494      226.024     a                39.3980      173.797     a                     
  35.8893      224.905     a                40.8393      172.726     a                     
  34.9080      223.866     a                40.4240      171.706     a                     
  34.4492      222.852     a                40.0115      170.679     a                     
  33.3209      221.797     a                38.5146      169.606     a                     
  34.3733      220.620     a                40.8393      166.499     a                     
  35.9307      219.517     a                40.8393      165.485     a                     
  35.7486      218.440     a                40.4757      164.409     a                     
  35.6633      217.410     a                40.8393      163.386     a                     
  35.7706      216.370     a                40.8393      162.375     a                     
  35.0781      215.350     a                40.8393      161.321     a                     
  35.3454      214.325     a                41.2050      160.266     a                     
  35.7361      213.318     a                41.2050      159.215     a                     
  35.5994      212.287     a                41.2050      158.146     a                     
  35.9845      211.229     a                41.5729      157.131     a                     
                                            40.7179      155.963     a                

Notes and References