34481-48-6
中文名称
聚醋酸乙烯邻苯二甲酸酯
英文名称
polyvinylacetate phthalate polymer
CAS
34481-48-6
分子式
C12H12O6
分子量
252.22
MOL 文件
34481-48-6.mol
34481-48-6 结构式
基本信息
中文别名
聚醋酸乙烯邻苯二甲酸酯 英文别名
polyvinylacetate phthalate polymerPolyvinyl acetate phthalateQ: What is Polyvinyl acetate phthalate Q: What is the CAS Number of Polyvinyl acetate phthalate
物理化学性质
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.