IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Potassium formate with Magnesium formate
Components:
   (1) Potassium formate; KCHO2; [590-29-4]  NIST Chemistry WebBook for detail
   (2) Magnesium formate; Mg(CHO2)2; [557-39-1]  NIST Chemistry WebBook for detail
Original Measurements:
   Pochtakova, E.I., Zh. Obshch. Khim. 44, 241-8 (1974).

 Variables:


Prepared By:
   P. Baldini

 Experimental Remarks:
   Note: The system was investigated at 0≤100x2≤25 due to thermal instability of component 2. No characteristic point was observed in the composition range mentioned.

 Experimental Data:   (Notes on the Nomenclature)
(Please see footnotes following the table(s).)   
t/°CT/KMole Fraction2
167440  0
190463  5
212485  7.5
22549810
23951212.5
24351615
25753017.5
26954220
28055322.5
28756025
 Notes:
   a  The T/K values were calculated the compiler.

 Method/Apparatus/Procedure:
   A visual polythermal method was used. This was supplemented with differential thermal analysis but no numerical DTA data are tabulated.

 Source and Purity of Materials:
   The materials were prepared by reacting C.P. carbonates with a slight excess of formic acid1
Component (1) undergoes phase transitions at 60, 135 and 157 °C.2
Component (2) undergoes a phase transition at 140 °C.

 Estimated Errors:
   Solubility: No information is given.
   Temperature: The compiler estimates the accuracy of the temperature measurements to be probably ± 2 K.

 References:
   1N. M. Sokolov, Zh. Obshch. Khim. 24, 1581 (1954).
   2N. M. Sokolov, Tezisy Dokl. X Nauch. Konf. S.M.I. (1956).