Afcona - 2723 serves as a defoamer and air-releaser for unsaturated polyester, polyurethane, UV, and epoxy resin systems.

Chemical Family: Silicones

Labeling Claims: Not Listed In California Proposition 65

Compatible Polymers & Resins: Epoxies (EP), Melamines & Melamine Formaldehydes (MF), Polyester - Melamine, Polyurethanes (PU), Polyvinyl Chloride (PVC), Unsaturated Polyester (UPE)

End Uses: 2K (2 component) Coating, Can Coating, Coil Coating, Flooring, Floors, Gelcoat, Radiation Curable Coating, Solventborne Coating, Solventless & High Solids Coating

Ask EM Sullivan Questions



Message our experts with questions


Gene Sullivan

Please reach out to me with any questions, I am happy to assist you in finding the right product or learning more about our storefront


Vince D'Andrea


Please reach out to me with any questions, I am happy to assist you in finding the right product or learning more about our storefront

Enhanced TDS

Identification & Functionality

Features & Benefits

Labeling Claims
CASE Ingredients Features
Product Features

Afcona-2723 is a defoaming and air-release additive recommended for thin layer (gel coat), casting resins and epoxy resin systems (e.g. floorings). In addition, it can be used for room temperature curing of unsaturated polyesters used in glass fiber reinforced systems.

Applications & Uses

Compatible Polymers & Resins
Cure Method
Coating End Applications
Composites End Use
Plastics & Elastomers End Uses
Product Applications

Afcona-2723 can be used in pigmented and non-pigmented resin systems such as:

  • Unsaturated polyesters (SMC/BMC gel coats and synthetic mortars)
  • Two-pack epoxies
  • Polyester/melamine heat-cured systems
  • PVC-compounds

In highly pigmented and high viscosity systems, incorporation of a suitable dispersing agent will reduce the viscosity and improve de-aeration. Products such as Afcona – 5010 are suitable for extender-rich systems, while Afcona – 4070 and Afcona – 4047 are suitable for inorganic and organic pigments.

Addition and Dosage

0.1 -0.5% on total formulation. Under normal conditions, 0.1 – 0.3% based on total formulation is sufficient.


To prevent foam- and bubble-formation, Afcona-2723 should be added at the beginning of the production process or application into the system. If it is added at the end of the formulation, good dispersion must be ensured.


Physical Form
Transparent to slightly yellowish liquid
Soluble in
S.B.P Spirit
ValueUnitsTest Method / Conditions
Density (at 20°C)0.82 - 0.86g/cm³-
Refractive Index1.445 - 1.455--
Flash Point77.0°C-

Regulatory & Compliance

Certifications & Compliance
Chemical Inventories

Packaging & Availability

Packaging Type
Packaging Information

55 lb and 375 lb non-returnable containers.

Storage & Handling

Shelf Life
5 years
Storage Condition

Afcona-2723 should be stored in a cool, dry place.

Note: Afcona – 2723 will become slightly hazy at temperatures below 5° C. This will not influence the quality or performance of the product.