Components:

(1) Nitroethane, C₂H₅NO₂; [79-24-3] NIST WebBook
(2) 1-Propanol, C₃H₈O; [71-23-8] NIST WebBook
(3) Water, H₂O; [7732-18-5] NIST WebBook

Original Measurements

Malone, J. W.; Vining, R. W.; J. Chem. Eng. Data 12, 387-9 (1967).

Variables:

Ambient temperature: 298 K

Prepared by:

N.I. Lisov, V.P. Sazonov

Method/Apparatus/Procedure:

Two methods were used. The solubility curve was determined by the titration method. A measured amount of (1) was added to a tarred 50-mL Erlenmeyer flack and titrated to the cloud point with (3). To each succeeding sample of (1) a measured quantity of (2) was added and the mixture was titrated with (3). Weight measurements were made using an analytical balance. Titrations were performed using 5-mL certified micro burettes graduated in 0.01 mL divisions. The analytical method was used for determination of equilibrium liquid phases compositions. The mixture of (1), (2) and (3) was then agitated vigorously and allowed to separate into phases. Densities were used to determine compositions of the equilibrium phases. Refractive index readings were used primarily to identify phases and secondarily to check compositions from density measurements (see Tables 1 and 2).

Source and Purity of Materials:

1. Commercial Solvents Corp.; purity 93.9 mass% with 2.3 mass% of nitromethane and 3.8 mass% of 2-nitropropane; n(25°C,D) = 1.3890.
2. Fisher; certified reagent grade; b. p. = (97.0 to 97.4)°C, n(25°C,D) = 1.3871.
3. Distilled.

Estimated Errors:

Ambient temperature: ±1 K.