

价格:面议
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产品规格:白色颗粒25KG,50KG
产品数量:1T以上 个
包装说明:25/桶,50/桶
关 键 词:pva
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发布时间:2007-12-25
美国Acros产 (电子级别) Product Specifications Appearance slightly yellow to cream powder Infrared spectrometry authentic Assay other 86 to 89 mole% (degree of hydrolysis) Loss on drying <5 % Viscosity 35 to 45 mPa.s (4% aq. soln., 20蚓) Saponification value 130 to 150 mg KOH/g Ash <1 % (as Na2O) pH 5 to 7 (4% aq. soln.) Additional info degree of polymerization: ca. 2000