Vinyl Acetate Monomer (VAM)
Overview
AS no. 108-05-4
EINECS no. 203-545-4
Molecular formula: C4H6O2
Synonyms: VAM, Vinyl Acetate, Ethenyl Acetate, Ethenyl Ethanoate,
1-Acetoxyethylene, Vinyl Acetate
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Chemical Identity
Chemical Formula: C4H6O2
IUPAC Name: Ethenyl ethanoate
CAS Number: 108-05-4
Molecular Weight: 86.09 g/mol
Structural Formula: CH3COOCH=CH2
Physical and Chemical Properties
Appearance: Colorless liquid
Odor: Sweet, fruity smell
Density: 0.93 g/cm³ at 20°C
Boiling Point: 72-73°C
Melting Point: -93°C
Flash Point: -8°C (closed cup)
Solubility:
Slightly soluble in water (2.5 g/100 mL at 20°C)
Fully miscible with most organic solvents like ethanol, acetone, and benzene
Technical Specifications
|
Items
|
Technical requirement
|
|
Best quality
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First quality
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Qualifier
|
|
Appearance
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Colorless and transparent
|
|
Density(20),g/cm3
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0.930~0.934
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0.930~0.934
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0.929~0.935
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Free acid (as acetic acid),%
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0.005
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0.010
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0.020
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Aldehyde(as acetaldehyde),%
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0.02
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0.04
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0.05
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Dry residue,%
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0.005
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0.05
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0.10
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Water content,%
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0.04
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0.10
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0.20
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|
Activity (second) (frothing time), second
|
660
|
690
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720
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Color(platinum-cobalt scale)
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5
|
10
|
15
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Purity,% =
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99.80
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99.70
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–
|
|
Boiling range (101.3kpa),C
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71.0~73.5
|
71.0~73.5
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71.0~73.5
|
Packaging and delivery
| liquid vinyl acetate monomers |
25kg/drum or 200kg/drum (blue plastic drum), and IBC drum with metal frame
for UV curing monomers |
| Port |
Shanghai |
Applications
VAM is a key monomer in the production of various polymers and copolymers, essential in
multiple industries:
Polyvinyl Acetate (PVA):
A primary application of VAM, used in adhesives (e.g., wood glue), paints, coatings, and
textile finishes.
Ethylene Vinyl Acetate (EVA):
Copolymerized with ethylene to produce EVA, which is flexible and durable.
Applications include footwear, solar encapsulants, and packaging films.
Polyvinyl Alcohol (PVOH):
Produced by hydrolyzing polyvinyl acetate.
Widely used in biodegradable films, water-soluble packaging, and industrial
adhesives.
Coatings and Paints:
VAM is used in water-based emulsion paints, offering excellent adhesion, durability, and
weather resistance.
Adhesives and Sealants:
VAM-based resins are key ingredients in pressure-sensitive adhesives and laminating
adhesives.
Textile and Paper Industries:
Provides finishes to textiles and coatings for glossy papers.
Health, Safety, and Environmental Considerations
Health Hazards:
Flammable liquid and vapor.
Can cause irritation to eyes, skin, and respiratory tract.
Prolonged exposure may affect the central nervous system.
Storage and Handling:
Store in cool, dry, and well-ventilated areas away from heat and ignition sources.
Use explosion-proof equipment.
Environmental Impact:
Classified as a volatile organic compound (VOC).
Requires controlled usage to minimize environmental emissions.
Vinyl Acetate Monomer (VAM) is an indispensable material in modern industries, serving
as a cornerstone in the production of polymers and resins that enhance the quality,
performance, and sustainability of everyday products. Its versatility and adaptability
make it a vital component in industries such as construction, packaging, automotive, and
textiles. With growing innovation and demand for eco-friendly solutions, VAM's role in
material science is set to expand further.
