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Polyvinyl Alcohol is a kind of non-ionic linear high polymer. It is non-toxic, non-smelly, and it looks white or light yellow, in the form of floccules, flakiness and solid powder. Its molecular formula is (C2H4O)n, of which "n" refers to the average degree of polymerization and the molecular weight is 44n. For example, PVA 1788, 17 means the average degree of polymerization, and 88 means the alcoholysis degree. Polyvinyl alcohol (PVA) is high polymer with excellent characters to dissolve easily in water but not to dissolve in common organic solvent and organic acids, and with excellent film-forming property, oil resistant, chemical-resistant. It can react with formaldehydes to form polyvinyl acetal.
1. PVA 1498 Specification:
Polyvinyl Alcohol PVA 1498
Appearance: |
White crystalline powder |
Viscosity (mp.s) |
12.0-17.0 |
Alcoholysis Degree %(mol/ mol) |
98.0-99.8 |
Volatile (%) ≤ |
5 |
Sodium Acetate (%) ≤ |
2.5 |
Ash (%) ≤ |
0.7 |
PH Value |
5-7 |
2. PVA 1498 Application:
PVA 1498 can be used as textile agent; for use as synthetic vessels in flow testing; used as feminine hygiene and adult incontinence products as a plastic backing sheet; also can be used as adhesive, in coating construction and textile industry.Previous:Polyvinyl Alcohol PVA 2088