Dissolution of sodium chlorate crystals in supersaturated solutions

• Existence of dissolving crystals in supersaturated solutions was occurred.
• We examine the growth/disolution rate dispersion of sodium chlorate crystals.
• The possible reasons for simultaneous crystal growth and dissolution were discussed.

The results of the investigations regarding the growth and the dissolution behavior of small sodium chlorate crystals at temperatures near saturation temperature of (31.00±0.02)°C are presented. Above this temperature all the observed crystals dissolved, as was expected. At temperatures between 30.5°C and 31.0°C coexistence of growing, non-growing and dissolving crystals was occurred. At temperatures below 30.5°C dissolution of the crystals did not occur. A significant growth/dissolution rate dispersion existed at all temperatures. Possible reasons for simultaneous growth and dissolution are discussed.