in not given dild. soln. of ScCl3 heated to 60°C, treated with excess of a dilute oxalic acid soln., after 20 min crystn.; drying in desiccator over CaCl2 for 2 days;
Gaade
Recueil des Travaux Chimiques des Pays-Bas, 1936 , vol. 55, p. 541,547, 554
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Skinner
Journal of the American Chemical Society, 1933 , vol. 55, p. 2036,2037, 2039