The solubilities of the sodium 2-chlorotoluene-4-sulfonate (CTSNa) in water, methanol, formic acid, dimethyl sulfoxide (DMSO), N,N-dimethylformamide (DMF), binary (methanol + water) mixed solvents, and binary (ethanol + water) mixed solvents were determined experimentally over the temperature range from (280 to 335) K at atmospheric pressure using a dynamic method. The mole fraction of water in the two solvent mixtures ranged from 0.0000 to 1.0000 and 0.2006 to 1.0000, respectively. A synergistic effect on CTSNa solubility was observed with the maximum solubility at solute-free mole fraction of ethanol x₂⁰ = 0.2082 and solute-free mole fraction of methanol x₃⁰ = 0.3985, respectively. The solubility data were correlated with the thermodynamic electrolyte nonrandom two-liquid (E-NRTL) model and the root-mean-square deviations of solubility temperature varied from (0.24 to 1.10) K.

中文翻译：

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2-氯甲苯-4-磺酸钠在纯溶剂和有机水溶液中的溶解度的测量和相关性

2-氯甲苯-4-磺酸钠（CTSNa）在水，甲醇，甲酸，二甲基亚砜（DMSO），N，N-二甲基甲酰胺（DMF），二元（甲醇+水）混合溶剂和二元（使用动态方法，在大气压下（280至335）K的温度范围内，通过实验确定了乙醇+水）混合溶剂。两种溶剂混合物中水的摩尔分数分别为0.0000至1.0000和0.2006至1.0000。在乙醇的无溶质摩尔分数x ₂ ⁰ = 0.2082和甲醇的无溶质摩尔分数x ₃ ^0时，观察到了对CTSNa溶解度的协同作用。分别为0.3985。溶解度数据与热力学电解质非随机两液（E-NRTL）模型相关，溶解度温度的均方根偏差在（0.24至1.10）K之间变化。