Note 65 bis — Chapter I · ON WATER AND ITS COMPOUNDS
George Kamensky translation
Sodium acetate (C2H3O2Na,3H2O) melts at 58°, but re-solidifies only on contact with a crystal, otherwise it may remain liquid even at 0°, and may be used for obtaining a constant temperature. According to Jeannel, the latent heat of fusion is about 28 calories, and according to Pickering the heat of solution 35 calories. When melted this salt boils at 123°—that is, the tension of the vapour given off at that temperature equals the atmospheric pressure.