Components:

(1) Nitromethane, CH3NO2 ; [75-52-5] NIST WebBook
(2) 2,2-Dimethylpentane, C7H16; [590-35-2] NIST WebBook

Original Measurements

Riccardi, R.; Franzosini, P.; Rolla, M.; Z. Naturforsch. A 23, 1816-8 (1968).
Ferloni, P.; Riccardi, R.; Int. Data Series: Sel. Data Mixtures, Ser. A(2), 79 (1977).

Variables:

Ambient temperature: 371 - 376 K

Prepared by:

V.P. Sazonov

Method/Apparatus/Procedure:

The synthetic method1 was used. Tubes were filled under vacuum with known masses of degassed and moisture-free components, sealed, and then placed in a thermostat bath filled with paraffin oil. The mixtures in the tubes were shaken by a Chemap vibromixer type E-1. Temperatures were measured with Degussa Pt resistance thermometers, which were checked against standards. Phase changes (cloud points) were observed as mixtures were cooled.

Source and Purity of Materials:
  1. Fluka AG; purity 99 mole%; fractionally distilled, degassed and finally distilled through a P2O5 filled tube.
  2. Fluka AG; purity 99 mole%; purification as above.
Estimated Errors:

Ambient temperature: reproduced better than 0.1 K.

References

1 Franzosini, P.; Z. Naturforsch. A 18, 224 (1963).

Experimental Values:
Mutual solubility of nitromethane and 2,2-dimethylpentane
T (°C) T (K) x1 100w1a
97.3 370.5 3.85 x 10-1 27.6
97.3 370.5 - -
97.7 370.9 - -
97.7 370.9 8.30 x 10-1 74.8
97.7 370.9 - -
97.7 370.9 8.28 x 10-1 74.6
99.6 372.8 - -
99.6 372.8 7.85 x 10-1 69.0
99.9 372.9 4.41 x 10-1 32.5
99.9 372.9 - -
101.4 374.6 5.10 x 10-1 38.8
101.4 374.6 - -
101.9 375.1 - -
101.9 375.1 7.91 x 10-1 60.9
101.9 375.1 - -
101.9 375.1 6.81 x 10-1 56.5
102.1 375.3 5.86 x 10-1 46.3
102.1 375.3 - -
102.3 375.5 6.08 x 10-1 48.6
102.3 375.5 - -
102.4 376.6 6.35 x 10-1 51.1
102.4 376.6 6.35 x 10-1 51.5

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