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CAS号: 34481-48-6 英文名称: polyvinylacetate phthalate polymer 英文同义词: polyvinylacetate phthalate polymer 中文名称: 聚醋酸乙烯邻苯二甲酸酯 中文同义词: 聚醋酸乙烯邻苯二甲酸酯 分子式: C12H12O6 分子量: 252.22008 溶解度 : Soluble in ethanol and methanol; sparingly soluble in acetone and propan-2-ol; practically insoluble in chloroform, dichloromethane, and water. In buffer solutions, polyvinyl acetate phthalate (200 mg/L) is insoluble below pH 5 and becomes soluble at pH values above 5. Polyvinyl acetate pththalate shows a sharp solubility response with pH; this occurs at pH 4.5–5.0, which is lower than for most other polymers used for enteric coatings. Solubility is also influenced by ionic strength.