Quality Specification of PVA 17-99:
Item High Alkali and Alcoholysis 17-99(H) Low Alkali and Alcoholysis 17-99(L)
Top Quality First Grade Up to the Standard Top Quality First Grade Up to the Standard
Degree of Alcoholysis(m01/m01)% 99.8--100 99.0--100
Viscosity mpa. S (Note1) (Note2)
Content of Sodium Acetate % ≤ 6.8 7.0 7.0 2.1 2.3 2.5
Volatile Matter % ≤ 7.0 8.0 9.0 8.0 9.0 10.0
Ash % ≤ 2.8 3.0 3.0 0.7 1.0 1.5
PH Value 7—10 ----
Note1: High Viscosity: 28.0—32.0 Midium Viscosity: 24.0—27.9 Low Viscosity: 20.0—23.9
Note2: High Viscosity: 28.0—31.0 Midium Viscosity: 24.0—27.9 Low Viscosity: 21.0—23.9
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