PVA 
 Is a polymer, odorless, nontoxic, white or light yellow floc, flake or powder solid. Formula (C2H4O) n, part of the alcoholysis PVA formula - (C2H4O) n-(C4H6O2) m-. 
 Flocculent PVA false accounting for (~) g/cm3, the proportion of false PVA sheet was (±) g/cm3. 

 PVA has the appearance of flocculent white color, soft feel bulky, fibrous even moderate, good water solubility, stability and other advantages of intrinsic quality. 

 PVA sheet 
 Has the appearance of the color white, forming small particles, high purity, dissolved a short time (dissolution time than similar domestic products reduced about 1 / 3) characteristics. 

 Features 
 PVA has good chemical stability and good insulation, film-forming. With a typical chemical properties of polyol can esterification, etherification and acetalization reaction.