Experimental solubility data of sodium naphthalene-1,5-disulfonate in five neat solvents (water, methanol, ethanol, 2-propanol, acetone) and three binary solvent systems (water + ethanol, water + 2-propanol, water + acetone) at different temperatures from 283.15 to 323.15 K were determined by the gravimetric method. The experimental results showed that three kinds of polymorphs appeared in the investigated solvent systems, and the solubility of sodium naphthalene-1,5-disulfonate all increased with increasing temperature and water content. According to the data measured, water was suitable to be the positive solvent, while methanol was considered to be a less-effective antisolvent due to its relatively large dissolving capacity. By means of our research, the solubility of sodium naphthalene-1,5-disulfonate in the neat solvents had a relation with the polarity of the solvents. The solubilities of sodium naphthalene-1,5-disulfonate were fitted by the modified Apelblat, Jouyban-Acree, van’t Hoff-Jouyban-Acree, and Apelblat-Jouyban-Acree models. The results showed that the four models can predict the experimental values very well.

中文翻译：

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1,5-二磺酸萘钠在283.15至323.15 K温度范围内的5种纯溶剂和3种二元溶剂体系中的溶解度的测定和相关性

萘-1,5-二磺酸钠在五种纯溶剂（水，甲醇，乙醇，2-丙醇，丙酮）和三种二元溶剂系统（水+乙醇，水+ 2-丙醇，水+丙酮）中的实验溶解度数据重量法测定了283.15至323.15 K的不同温度。实验结果表明，在所研究的溶剂体系中出现了三种多晶型物，并且1,5-二磺酸萘钠的溶解度均随温度和水含量的增加而增加。根据测得的数据，水适合用作正溶剂，而甲醇由于其相对较大的溶解能力而被认为是效果较差的抗溶剂。根据我们的研究，萘1钠的溶解度 纯溶剂中的5-二磺酸盐与溶剂的极性有关。改进的Apelblat模型，Jouyban-Acree模型，van't Hoff-Jouyban-Acree模型和Apelblat-Jouyban-Acree模型拟合了1,5-萘二磺酸钠的溶解度。结果表明，这四个模型可以很好地预测实验值。