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Product Name: Polyvinyl Alcohol (Fibre Grade)  
Trade Mark: Sanren Brand  
Alternative Name: ?  
Molecular formula/Structural Formula:
Production Process: Polyvinyl alcohol is produced from vinyl acetate by polymerization and low-alkali-alcoholysis.  
Properties: Polyvinyl alcohol is a water soluble high-molecular compound, not soluble in ordinary organic solvents. It is a white solid in the form of flakes, with excellent tensile stress, mouldability, impact strength, wear resistance and excellent electrical insulation.  
Grade: 1799  
National Standard Grade: ?  
Enterprise Standard Grade: ?  
Specifications:

GB/T 7351-1997 (National Standard)

No.

Item

Specification

Testing Method

premium-grade

1st-grade

2nd-grade

1

Volatiles, % <=

9.0

9.0

9.0

GB 12010.4

2

Sodium hydroxide, % <=

0.20

0.20

0.30

GB 12010 11

3

Acetate radical residue, % <=

0.13

0.15

0.20

GB 12010.5

4

Sodium, acetate, % <=

2.1

2.3

2.3

GB 12010.6

5

Purity, % >=

90.0

90.0

88.4

GB 7351 4.5

6

Transparency, % >=

90.0

90.0

90.0

GB 7351 4.6

7

Dyeability, % >=

90.0

88.0

86.0

GB 7351 4.7

8

Swellability, %

145(+-15)

GB 7351.4.8

9

Average Polymerization Degree

M(+-50)

M(+-70)

GB 12010.9

Note: M value depends on requirement of client, and could be selected between 1700~1800. No change will be allowed if it has been selected.

 
Scope of Application: ?  
Major Applications: 燯sed as raw material for polyvinyl alcohol fibre, textile sizing agent, also coating material and adhesives, pulp finishing agent, emulsifying agent, soil ameliorator and film etc. 
Process Method: ?  
Packing: 25kg net in PP woven bag lined with plastic bag.  
Packing Size: ?  
Storage: Stored in cool, dry, ventilated warehouse according to lot no. grade and different specification, equipped with fire-fighting facilities.  
Transportation: Suitable for rail, road and sea transportation, keep dry.  
Safety Precautions: 1. Keep away from fire and heat sources.
2. Not to be stored together with acid, alkalis, wet articles, oxides and sodium metal
3. Handle with care.
 
SPC

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