Abstract
The salting-out behavior of 2,4-dinitrobenzaldehyde (2,4-DNBA) and 2,6-dinitrobenzaldehyde (2,6-DNBA) was determined from solubility measurements in pure water and seawater with ionic strengths of (0.1662, 0.3352, 0.5071, and 0.6820) mol·kg−1 at temperatures between (280 and 314) K. For both compounds tested, the solubility increased with increasing temperature. As the ionic strength of the solution increased, the solubility of the organic compounds decreased. The average salting-out coefficients for 2,4-DNBA and 2,6-DNBA were (0.12 and 0.10) kg·mol−1, respectively, which are consistent with measurements for other nitroaromatic compounds. Over the temperature range examined, the salting-out coefficients did not vary significantly.
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