SDS Volume

Volume 72. Nitromethane with Water or Organic Solvents: Ternary and Quaternary Systems, p 1574

Source Publication

Sazonov, V. P.; Zhilyaeva, I. N.; Zh. Fiz. Khim. 45, 733-4 (1971).

Conditions:

Room Temp: 286 - 307 $\pu{K}$

Compilers:

N.V. Sazonov, V.P. Sazonov

Methodology:

The synthetic method (Alekseev [1]) was used. Mixtures of (1), (2) and (3) of total mass 10 g were heated with vigorous stirring to a temperature higher than the homogenization temperature, then slowly cooled until turbidity appeared. Heating and cooling cycles were repeated twice. Temperature values obtained for appearing and disappearing turbidity were averaged.

Sample Information:
  1. Source not specified; pure grade reagent; dried and twice distilled in glass packed column.
  2. Source not specified, analytical purity; twice distilled at vacuum; 0.03 mass% of water by the Karl Fischer analysis.
  3. Source not specified, pure grade reagent; dried and twice distilled at vacuum.
Measurement Errors:

Ambient temperature: ±0.02 K.

Methodology Citation

1 Alekseev, V. F.; Zh. Russ. Fiz. -Khim. O-va 8, 249 (1876).

System Components:
  1. Nitromethane, $\ce{ CH3NO2 }$; [75-52-5] NIST WebBook
  2. 1,2,3-Propanetriol, $\ce{ C3H8O3 }$; [56-81-5] NIST WebBook
  3. Octanoic acid, $\ce{ C8H16O2 }$; [124-07-2] NIST WebBook
Experimental Data

The temperatures of phase transitions were determined in ternary mixtures with a constant mass content of (2), respectively, 2.5, 5.0, 7.5, 10.0, 20.0, 40.0, 70.0 mass % and also in ternary mixtures with constant mass relationship of (1) and (3) as 45.0:55.0, 57.5:42.5, and 70.0:30.0, respectively. L1 nitromethane-rich phase; L2 propanetriol-rich phase; L3 acid-rich phase. The phase which is being dissolved is indicated in the table.

$T$ (°C) $T$ ($\pu{K}$) w1 w2 $x_{1}$ $x_{2}$
19.15292.30 0.82880.0250 0.91350.0183
19.15292.30 0.80750.0500 0.89630.0368
23.00296.15 0.76000.0500 0.87000.0379
24.52297.67 0.71250.0500 0.84200.0392
25.17298.32 0.66500.0500 0.81220.0405
25.27298.42 0.61750.0500 0.78030.0419
19.18292.33 0.78630.0750 0.87880.0556
23.02296.17 0.74000.0750 0.85250.0573
23.44296.59 0.41630.0750 0.61100.0730
24.52297.67 0.69380.0750 0.82460.0591
24.52297.67 0.46260.0750 0.65340.0702
25.06298.21 0.50880.0750 0.69250.0677
25.17298.32 0.64750.0750 0.79480.0610
25.27298.42 0.59260.0750 0.75680.0635
25.29298.44 0.57820.0750 0.74640.0642
25.30a298.45 0.55500.0750 0.72900.0653
12.70285.85 0.81020.1000 0.88600.0725
19.05292.20 0.31490.1000 0.50080.1054
19.23292.38 0.76490.1000 0.86100.0746
21.57294.72 0.35990.1000 0.54970.1012
23.05296.20 0.71990.1000 0.83480.0768
23.41296.56 0.40500.1000 0.59490.0974
24.50297.65 0.44990.1000 0.63660.0938
24.57297.72 0.67500.1000 0.80690.0792
25.05298.20 0.49490.1000 0.67550.0905
25.18298.33 0.63000.1000 0.77720.0818
25.28298.43 0.58510.1000 0.74570.0845
25.29298.44 0.56270.1000 0.72910.0859
25.29a298.44 0.53990.1000 0.71170.0874
18.95292.10 0.28010.2000 0.44270.2095
19.31292.46 0.68000.2000 0.78760.1535
21.37294.52 0.32010.2000 0.48810.2022
23.07296.22 0.64010.2000 0.76170.1578
23.28296.43 0.36000.2000 0.53040.1953
24.45297.60 0.40000.2000 0.56990.1889
24.61297.76 0.60000.2000 0.73420.1622
25.00298.15 0.44000.2000 0.60700.1828
25.22298.37 0.56000.2000 0.70520.1669
25.28298.43 0.52010.2000 0.67450.1719
25.29a298.44 0.50020.2000 0.65850.1745
25.30a298.45 0.48000.2000 0.64170.1772
17.90291.05 0.21000.4000 0.32800.4141
19.43292.58 0.50970.4000 0.62690.3261
20.87294.02 0.24000.4000 0.36500.4032
23.00296.15 0.26990.4000 0.40000.3929
23.10296.25 0.48010.4000 0.60320.3331
24.27297.42 0.30010.4000 0.43360.3830
24.68297.83 0.45000.4000 0.57790.3405
24.96298.11 0.33010.4000 0.46530.3737
25.24298.39 0.42010.4000 0.55180.3482
25.27298.42 0.36000.4000 0.49540.3648
25.27298.42 0.40480.4000 0.53790.3523
25.30298.45 0.39000.4000 0.52420.3563
25.30a298.45 0.37510.4000 0.51000.3605
19.48292.63 0.11990.7000 0.18160.7029
19.55292.70 0.25510.7000 0.34560.6286
21.97295.12 0.13510.7000 0.20200.6937
23.15296.30 0.24000.7000 0.32900.6361
23.58296.73 0.15000.7000 0.22140.6849
24.73297.88 0.16500.7000 0.24050.6762
24.75297.90 0.22500.7000 0.31220.6438
25.15298.30 0.17990.7000 0.25900.6679
25.26298.41 0.20980.7000 0.29470.6517
25.30a298.45 0.19490.7000 0.27710.6597

(a) Critical opalescence.

(a) Critical opalescence.

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