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Polyvinyl alcohol ( CHINA PVA )
Specifications
Polyvinyl Alcohol 99(L) Series
1 Cas no.:9002-89-5
2 PVA 19-99, PVA 20-99,PVA 22-99,PVA 24-99,PVA 26-99
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PVA 19-99 ( L )
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PVA 20-99 ( L )
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Item
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Top grade
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First grade
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Qualified
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Top grade
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First grade
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Qualified
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Sodium acetate content , %
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≤ 2.1
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≤ 2.3
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≤ 2.5
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≤ 2.1
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≤ 2.3
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≤ 2.5
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Volatile content , %
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≤ 8.0
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≤ 9.0
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≤ 10.0
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≤ 8.0
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≤ 9.0
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≤ 10.0
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Ash content , %
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≤ 0.7
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≤ 1.0
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≤ 1.5
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≤ 0.7
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≤ 1.0
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≤ 1.5
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Average polymerization
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1900 ± 100
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2050 ± 100
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Viscosity , mPa · s
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26.0 - 32.0
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26.0 - 32.0
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Alcoholysis , %(mol/mol)
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99.0 - 100
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99.0 - 100
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PVA 22-99 ( L )
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PVA 24-99 ( L )
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Item
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Top grade
|
First grade
|
Qualified
|
Top grade
|
First grade
|
Qualified
|
|
Sodium acetate content , %
|
≤ 2.1
|
≤ 2.3
|
≤ 2.5
|
≤ 2.1
|
≤ 2.3
|
≤ 2.5
|
|
Volatile content , %
|
≤ 8.0
|
≤ 9.0
|
≤ 10.0
|
≤ 8.0
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≤ 9.0
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≤ 10.0
|
|
Ash content , %
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≤ 0.7
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≤ 1.0
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≤ 1.5
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≤ 0.7
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≤ 1.0
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≤ 1.5
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Average polymerization
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2250 ± 100
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2450 ± 100
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Viscosity , mPa · s
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30.0 - 40.0
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40.0 - 50.0
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Alcoholysis , %(mol/mol)
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99.0 - 100
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99.0 - 100
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PVA 26-99 ( L )
|
|||
|
Item
|
Top grade
|
First grade
|
Qualified
|
|
Sodium acetate content , %
|
≤ 2.1
|
≤ 2.3
|
≤ 2.5
|
|
Volatile content , %
|
≤ 8.0
|
≤ 9.0
|
≤ 10.0
|
|
Ash content , %
|
≤ 0.7
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≤ 1.0
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≤ 1.5
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Average polymerization
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2650 ± 100
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Viscosity , mPa · s
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50.0 - 60.0
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Alcoholysis , %(mol/mol)
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99.0 - 100
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Polyvinyl Alcohol 99(L) Series
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