IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Nitromethane with Water-d2

Components:
   (1) Nitromethane; CH3NO2; [75-52-5]  NIST Chemistry WebBook for detail
   (2) Water-d2; D2O; [7789-20-0]  NIST Chemistry WebBook for detail

Original Measurements:
   Rabinovich, I.B.; Fedorov, V.D.; Pashkin, N.R.; Avdeshyak, M.A.; Pimenov, N.Ya., Dokl. Akad. Nauk. SSSR 105, 108-11 (1955).

Variables:
   Temperature = 293 K to 379 K

Prepared By:
   V. P. Sazonov

Experimental Data:   (Notes on the Nomenclature)

Effect of deuteration on solubility of nitromethane in water
t/°C	T/K	Ostwald coefficient, L /dimensionless	Comment(s)
20.0	293.2	5.5	100(L_{H-L_{D)/L_H^a}}
26.0	299.2	5.5	100(L_{H-L_{D)/L_H^a}}
40.0	313.2	4.1	100(L_{H-L_{D)/L_H^a}}
66.0	339.2	4.3	100(L_{H-L_{D)/L_H^a}}
80.0	353.2	5.4	100(L_{H-L_{D)/L_H^a}}
100.0	373.2	10	100(L_{H-L_{D)/L_H^a}}
103.0	376.2	43 (b)	100(L_{H-L_{D)/L_H^a}}

Notes:
   ^a  L_H and L_D are the solubilities (in mole %) of nitromethane in H₂O and nitromethane in D₂O, respectively.
   ^b  This value refers to a temperature that corresponds to within ±0.5 °C to the UCST of the nitromethane+water system. USCT is 105.5 °C.

Method/Apparatus/Procedure:
   The synthetic method (cloud-clear points) of Alekseev was used. This involves observing the temperature at which a measured mass of one liquid becomes visually soluble in a measured mass of the other liquid.

Source and Purity of Materials:
   (1) Source not specified; purity not specified; purified.
   (2) Not specified.

Estimated Errors:

   Temperature: ± 0.2 K.