有果香。味甜。能与乙醇、乙醚混溶，微溶于水。易燃。 应用： 异丁酸甲酯在强制瑞利散射研究中作为稀释剂用于测量聚（甲基丙烯酸甲酯）中包含樟脑醌的三元体系的扩散系数。 Application： Methyl isobutyrate was used as diluent in forced Rayleigh scattering studies to measure diffusion coefficients for a ternary system comprising camphorquinone in poly(methyl methacrylate).