Butyl acrylate Cas 141-32-2

CAS Number

141-32-2

Molecular Formula

C7H12O2

Also known as:

n-Butyl acrylate; Butyl acrylate; Ethylidene propionate (historic/trade variants); Ethyl acrylate is different — confirm exact ester when sourcing.

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Product Description

Product introduction

Butyl acrylate (n-butyl acrylate; CAS 141-32-2) is the butyl ester of acrylic acid supplied commercially as a clear, colourless to pale-yellow liquid with a characteristic fruity/ester odour. It is a reactive vinyl monomer used widely to produce homopolymers and copolymers — notably emulsion polymers, pressure-sensitive adhesives (PSA), coatings, textile finishes and specialty acrylic resins. Commercial material is normally shipped with polymerisation inhibitors; request lot Certificate of Analysis (CoA) and Safety Data Sheet (SDS) prior to qualification.

Applications & Descriptions

  • Emulsion Polymers (Coatings & Paints)
    Used as a comonomer in acrylic emulsions to impart flexibility, adhesion and weathering resistance in water-borne paints, wood coatings and textile finishes.

  • Adhesives & Pressure-Sensitive Adhesives (PSA)
    Provides low-Tg soft segments in PSA and construction adhesive formulations, contributing tack and peel performance when copolymerised with higher-Tg monomers.

  • Sealants & Caulks
    Used in latex and solventborne sealant systems to improve elasticity, adhesion and low-temperature performance.

  • Textile, Leather & Paper Finishes
    Employed in polymer systems that deliver softness, abrasion resistance and binding properties for textile finishing, leather coatings and paper surface treatments.

  • Specialty Acrylic Resins & Modifiers
    Feedstock for acrylic esters and specialty copolymers tailored for rheology modifiers, binders and dispersants in industrial formulations.

  • Laboratory Reagent & R&D Monomer
    Supplied for research polymerisations, method development and small-scale synthesis where reproducible monomer quality is required.

Technical Parameters

Parameter Value
Melting point -69 °C
Boiling point 61-63 °C60 mm Hg(lit.)
Density 0.894 g/mL at 25 °C(lit.)
Vapor density >1 (vs air)
Vapor pressure 3.3 mm Hg ( 20 °C)
Fp 63 °F
Solubility 1.7g/l
Form Liquid

Applications

Film-forming Agents/Resins

Quick Information

EINECS 205-480-7
Molecular Weight 128.17 g/mol

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