Vinyl Chloroacetate, CAS 2549-51-1, is also known as ethenyl 2-chloroacetate. It is a reactive vinyl ester monomer for functional copolymers, acrylic and ethylene-based elastomers, dyeable acrylic fibres and water-resistant films. Specify the intended polymer process and any stabilizer or inhibitor requirement before requesting a quotation.
Vinyl Chloroacetate CAS 2549-51-1
- CAS: 2549-51-1
- Synonyms: Vinyl Chloroacetate; Ethenyl 2-chloroacetate
- Einecs: 219-834-3
- Molecular Formula: C₄H₅ClO₂
- Grade: Confirm the current product-specific specification.
- Package: Confirm packaging for the offered form and destination requirements.
Product Description
Vinyl Chloroacetate is an ethenyl 2-chloroacetate monomer identified by CAS 2549-51-1.
Synonym: Ethenyl 2-chloroacetate.
Chemical formula: C₄H₅ClO₂
Molecular weight: 120.53 g/mol
CAS Number: 2549-51-1
EINECS: 219-834-3
Melting point: -68 °C
Boiling point: 37-38 °C (16 mmHg)
Density: 1.192 g/cm³
Appearance: colorless liquid
Flash point: 51 °C
Application suitability depends on the buyer’s formulation or process and must be assessed against the current product-specific specification.
Technical use context
Vinyl Chloroacetate is a vinyl ester monomer used in polymer-related processing.
Confirm any stabilizer or inhibitor requirement for the intended process with the current product-specific specification.
Compatibility with a particular comonomer, resin or crosslinking system must be assessed against the current product-specific specification.
Confirm suitability for a specific film, adhesive, coating, dye or elastomer system against the current product-specific specification.
Use the current product-specific SDS and specification to assess handling, storage and local regulatory suitability.

FAQ - Technical & Supply Chain
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Q:
What is Vinyl Chloroacetate used for?
A: Vinyl Chloroacetate is mainly used as a reactive vinyl ester monomer for functional copolymers, acrylic and ethylene-based elastomers, dyeable acrylic fibers and water-resistant films. Its chloroacetate group provides a reactive site for later crosslinking or modification, so the comonomer system and inhibitor requirement should be confirmed with the current product-specific specification. -
Q:
How is Vinyl Chloroacetate different from Vinyl Acetate?
A: Vinyl Chloroacetate contains a chloroacetate group and has CAS 2549-51-1, while Vinyl Acetate has CAS 108-05-4. The chlorine-containing ester group makes Vinyl Chloroacetate useful as a functional or crosslinkable monomer, but it also changes toxicity, handling, inhibitor requirements and process suitability, so the two monomers are not interchangeable. -
Q:
Is commercial Vinyl Chloroacetate normally supplied with an inhibitor?
A: Often yes. Commercial material may contain MEHQ or another stated polymerization inhibitor, and the concentration is part of the offered grade. Do not assume an inhibited and inhibitor-free product are interchangeable; confirm inhibitor identity and level before process approval. -
Q:
What should be confirmed before ordering and storing Vinyl Chloroacetate?
A: Confirm GC assay, inhibitor type and concentration, water, acidity, color and any process-specific impurity limits. State quantity, packaging and storage-temperature requirement. Vinyl Chloroacetate is normally a colorless liquid and is typically stored refrigerated around 2-8 degrees Celsius with the stated inhibitor, tightly closed and away from heat, light and moisture. -
Q:
What transport classification applies to Vinyl Chloroacetate?
A: Vinyl Chloroacetate is commonly transported as UN 2589, Hazard Class 6.1 toxic liquid, Packing Group II, and it has a flammable-liquid flash point around 51 degrees Celsius. Confirm the exact classification, subsidiary hazards and approved packaging with the current product-specific safety information and destination requirements.
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