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Home   /   Product   /   PVA Polyvinyl Alcohol

PVA Polyvinyl Alcohol

LIWEI CHEMICAL CO. LTD

Specifications

Polyvinyl Alcohol

Grades

Hydrolysis
(mol%)

Volatiles
(%)

Viscosity
(mpa.s)

Ash
(wt%)

PH Value

Purity
(wt%)

Grades are being produced regularly

PVA1788

87.0-89.0

5

20.5-24.5

0.4

5-7

93.5

PVA1888

86.0-90.0

6

23.5-28.5

0.5

5-7

92.5

PVA1895

94.0-96.0

5

26.0-30.0

0.5

5-7

93.5

PVA1799

98.0 99.4

5

23.0-29.0

0.7

5-7

93.0

PVA2488

87.0-89.0

5

45.0-55.0

0.5

5-7

93.5

 

PVA0499

98.0 99.4

5

4.0-5.0

0.7

5-7

93.0

PVA0498

98.0 98.8

5

4.0-5.0

0.7

5-7

93.0

PVA0588

87.0-89.0

5

4.5-6.0

0.7

5-7

93.0

PVA0599

98.0-99.0

5

5.0-6.5

0.7

5-7

93.0

PVA1098

97.0-99.0

5

8.0-12.0

0.5

5-7

93.5

PVA1399

98.0-99.0

5

13.0-17.0

0.5

5-7

93.5

PVA1388

87.0-89.0

5

12.0-14.0

0.5

5-7

93.5

PVA1797

96.0-98.0

7

23.0-29.0

0.7

5-7

93.5

PVA2088

87.0-89.0

5

29.0-34.0

0.5

5-7

93.5

PVA2497

96.0-98.0

5

54.0-64.0

0.5

5-7

93.5

PVA2499

98.0-99.0

5

55.0-65.0

0.5

5-7

93.5

Grades can be produced

PVA1897

96.0-98.0

5

27.0-31.0

0.5

5-7

93.5

PVA1795

94.0-96.0

7

22.0-28.0

0.5

5-7

93.5

PVA1899

98.0-99.0

5

28.0-32.0

0.5

5-7

93.5

PVA2099

98.0-99.0

5

34.0-39.0

0.5

5-7

93.5

PVA2288

87.0-89.0

5

38.0-42.0

0.5

5-7

93.5

PVA1792

91.0-93.0

5

21.0-27.0

0.5

5-7

93.5

PVA2092

91.0-93.0

5

28.0-34.0

0.5

5-7

93.5

Muitiple Specifications Module

Name
Polyvinyl Alcohol 1788 & Polyvinyl Alcohol 1799 PVA 1788 & PVA 1799 Order Detail
Polyvinyl Alcohol 0588 & Polyvinyl Alcohol 0599 PVA 0588 & PVA 0599 Order Detail
Polyvinyl Alcohol 2488 & Polyvinyl Alcohol 2499 PVA 2488 & PVA 2499 Order Detail
Polyvinyl Alcohol 0488 & Polyvinyl Alcohol 0499 PVA 0488 & PVA 0499 Order Detail
Polyvinyl Alcohol 1492 & Polyvinyl Alcohol 1498 PVA 1492 & PVA 1498 Order Detail
Polyvinyl Alcohol 1792 & Polyvinyl Alcohol 1798 PVA 1792 & PVA 1798 Order Detail
Polyvinyl Alcohol 2088 & Polyvinyl Alcohol 2099 PVA 2088 & PVA 2099 Order Detail
Polyvinyl Alcohol 2699 PVA 2699 Order Detail
Packing & Storage

Packing Our polyvinyl alcohol products are packed in craft paper bag. Net weight 12.5kgs or 20kgs if floccule, Net weight 25kgs /20kgs if powder or Granule.
Storage Powder 20°C 2 years; Floccule 20°C 2 years.
Shipping Room temperature 5-30℃ in China; may vary elsewhere
Free Quote

General Information
Chemical & Physical Properties
Safety Information
Synthetic Route

Common Names Polyvinyl Alcohol
Structure (C2H4O)n
CAS No. 9002-89-5 Boiling Point(℃) 23.5±13.0
Molecular Weight 44.0526 Melting Point(℃) 200 °C
Appearance White crystalline Vapor Specific Gravity No data available
HS Code 390530 Flash Point(℃) No data available
Solubility Soluble in water (above 95℃), slightly soluble in dimethyl sulfoxide Autoignition Temperature(℃) No data available
Safety Phrases None
RIDADR None
WGK Germany None
Packaging Group None
Hazard Class None
SYMPTOMS PREVENTION FIRST AID
Inhalation None None If breathed in, move person into fresh air. If not breathing, give artificial respiration.
Skin
Skin None None Wash off with soap and plenty of water.
Eyes
Eyes Redness None Flush eyes with water as a precaution.
Ingestion Nausea. Vomiting None Never give anything by mouth to an unconscious person. Rinse mouth with water.
PVA is produced with calcium carbide as raw material. After calcium carbide reacts with water to form acetylene, acetylene synthesizes with acetic acid to form vinyl acetate, then methanol is used as the solvent to polymerize, Through alcoholysis, poly-vinyl acetate changes to PVA. After being crushed and dried, it becomes finished product.
Frequently Asked Questions

What is Polyvinyl alcohol?

Polyvinyl alcohol (abbreviated as PVA) also can be called Poval is a kind of water-soluble resin produced by polymerization and alcoholysis of vinyl acetate. Due to its unique features of high cohesiveness, membrane tenacity, smoothness, solvent resistance, gas inhibitor, wear resistance, protective colloid, and waterproof after specially treated, polyvinyl alcohol is widely applied in textile, building, papermaking, packing, timber processing, agriculture, printing, polymer chemical, ceramic, iron and steel, electronic, electrolytic, electroplating and other industries. As excellent synthetic fibers, it can also be spun and acetalized to make vinylon fiber. Liwei can produce PVA series in large quantity with polymerization degrees of 1,700-2,800 and alcoholysis degrees of 88-99.9 (mol/mol) %, featuring consistent quality, high purity, white color, high transparency, and stable viscosity. Apart from production of general PVA readily available for customers, the company also develops a variety of PVA tailored for customers specific purposes.
PVA Properties
Polyvinyl Alcohol Poval 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.

 

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