Cas号63148-65-2分子式C8nH14n+2O2n；H2(C8H14O2)n别名聚乙烯醇缩丁醛树脂外观Appearance白色粉末红外光谱鉴别Infraredspectrometry符合干燥损失Lossondrying<2.0%(10g)(ca.100°C)丁醛基ButyralContent70-75%粘度Viscosity15.0-18.0mPa.s(c=10,EtOH94%))