Solubility of 1-aminoanthraquinone and 1-nitroanthraquinone in scCOub>2ub> were measured.
Temperature ranges of (323.15–383.15) K and pressures of (12.5–25.0) MPa.
Solubility of 1-aminoanthraquinone was higher than that of 1-nitroanthraquinone.
Demonstrated effect of amino and nitro groups on the solubility of anthraquinones.
Correlated well by COub>2ub> density models and thermodynamic models.