Features:
1.Volatile Content: ≤2.0Wt-%; 2.Non-volatile Content: ≥98.0Wt-%; 3.Butyral Content: 76-85Wt-%; 4.Acetate Content: ≤3.0Wt-%; 5.Hydroxy Content: 12-17Wt-%; 6.10% Viscosity: 9-14mpa.s; 7.Free Acid: ≤0.5MgKOH/g.