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Henan Kingway Chemicals Co.,Ltd
 
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Henan Kingway Chemicals Co.,Ltd
[China]
Address:
B908 Xingye Mansion NO.22 Nongye Road,Zhengzhou Zhengzhou Henan 450008 China
Phone:
86-0371-65336569
Contact name:
Kelly Luo
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Henan Kingway Chemicals Co.,Ltd



 
Products

Polyvinyl Alcohol

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  Polyvinyl Alcohol

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 Origin China

Synonyms: Polyvinyl alcohol; PVA; Polyvinol; ethenol homopolymer

General descriptions:

CAS No.: 9002-89-5
Molecular Weight: Not applicable to mixtures.
Chemical Formula: [ -CH2CHOH- ]n
Product Codes: U227, U228, U229, U232

Appearance: White free-flowing granules.
Odor: Mild odor.
Solubility: Moderately soluble.
Specific Gravity: 1.19 - 1.31  g/cm3
pH: Aqueous solution is neutral or slightly acid.
% Volatiles by volume @ 21C (70F): 0

Melting Point: 230 C (ca. 392F)

Boiling point: 228 C

Flash point: 79.44 C

H.S : 39053000
Applications:

PVA is used in sizing agents that give greater strength to textile yarns and make paper more resistant to oils and greases. It is also employed as a component of adhesives and emulsifiers, as a water-soluble protective film, and as a starting material for the preparation of other resins. By reaction with butyraldehyde (CH3CH2CH2CHO) and formaldehyde (CH2O), PVA can be made into the resins polyvinyl butyral (PVB) and polyvinyl formal (PVF). PVB, a tough, clear, adhesive, and water-resistant plastic film, is widely used in laminated safety glass, primarily for automobiles. PVF is used in wire insulation.

Specifications:

Item                                      24-88P              17-88P

The average degree of polymerization(DP)   2400-2500            1700-1800

Molecular Weight(Mn)                     118000-124000        84000-89000

Viscosity(cps)                             44-50                21-26

Basicity(mol%)                            86-89                 86-89

Volatile(wt%)                              5max                 5max

Ash(wt%)                                 0.5max               0.5max

PH                                       5-7                   5-7

Fineness(mesh)                            120min              120min

We also can supply other specifications according to your requests.

Packaging: 25kgs net in PP woven bag coated with plastic.And we also can provide other packagings.

Storage:




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