IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: 1-Methylnaphthalene with Water

   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) 1-Methylnaphthalene; C11H10; [90-12-0]  NIST Chemistry WebBook for detail

   G.T. Hefter, School of Mathematical and Physical Sciences, Murdoch University, Perth, W.A., Australia. February 1986.

Critical Evaluation:

   Quantitative solubility data for the 1-methylnaphthalene (1) – water (2) system have been reported in the publications listed in Table 1.

The original data in all of these publications are compiled in the Data Sheets immediately following this Critical Evaluation.

For further convenience further discussion of this system is divided into two parts.


All the available data on the solubility of 1-methylnaphthalene in water are summarized in Table 1 with the exception of those of Schwarz and Wasik which have been rejected as they are much more scattered that those in the paper by Schwarz (ref 5). There are insufficient data to warrant plotting.

At 298K, the only temperature where comparison is possible, the data are in excellent agreement and the average value can be Recommended. At other temperatures only the data of Schwarz (ref 5) are available and must thus be considered as Tentative only.


As only the data of Englin et al. (ref 1) are available on the solubility of water in 1-methylnaphthalene no Critical Evaluation is possible. However, it may be noted that the solubility values of Englin et al. are generally reliable for T < 300K but are larger than Recommended values at higher temperatures. The interested user is referred to the relevant Data Sheet for experimental values.

Experimental Data:   (Notes on the Nomenclature)

Table 1. Quantitative Solubility Studies of the 1-Methylnaphthalene (1) - Water (2) System
Englin et al.273-3231(2) in (1)analytical
Eganhouse and Calder2982(1) in (2)GLC
Mackay and Shiu2983(1) in (2)spectrofluorometric
Schwarz and Wasik283-2984(1) in (2)spectrofluorometric
Schwarz282-3055(1) in (2)spectrophotometric
Table 2. Recommended (R) and Tentative Values of the Solubility of 1-Methylnaphathalene (1) in Water (2)
T/KReferenceSol. PowerSolubilitySol. NoteBest Sol. PowerBest SolubilityBest Sol. Notex1 Powerx1x1 Note
283532.05* g(1)/100g slna32.1 g(1)/100g slnb62.7b
293532.56* g(1)/100g slna32.6 g(1)/100g slnb63.3b
2982, 3, 532.58, 2.85, 2.95* g(1)/100g slna32.8 ± 0.2b (R) g(1)/100g slnb63.5 (R)b
303533.35* g(1)/100g slna33.4 g(1)/100g slnb64.3b
Table 2a  Values marked with an asterisk (*) have been obtained by the Evaluator by graphical interpolation of the original data.
Table 2b  Obtained by averaging where relevant; σn has no statistical significance.

References: (Click a link to see its experimental data associated with the reference)

   1  Englin, B.A.; Plate, A.F.; Tugolukov, V.M. Pryanishnikova, M.A., Khim. Tekhnol. Topl. Masel 1965, 10, 42-6.
   2  Eganhouse, R.P.; Calder, J.A., Geochim. Cosmochim. Acta 1976, 40, 555-61.
   3  Mackay, D.; Shiu, W.Y., J. Chem. Eng. Data. 1977, 22, 399-402.
   4  Schwarz, F.P.; Wasik, S.P., J. Chem. Eng. Data 1977, 22, 270-3.
   5  Schwarz, F.P., J. Chem. Eng. Data. 1977, 22, 273-7.