polyvinyl alcohol 1.Factory supply 2.Free sample for test 3.White powder 4.Prompt delivery polyvinyl alcohol PVA 1788Characters: Name:polyvinyl alcohol (PVA) CAS NO:9002-89-5 Purity : 99%Color:white powder or Granular Formula:[C2H4O]n Model Number: 1788,1799,2488,2499Specification: Relative density(25°C/4°C)1.27-1.31(solid), 1.02(10% solution)Glass state temperature75-85°CRefractive index1.49-1. ...