Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

BASF FoamStar ST 2438 Defoamer

BASF FoamStar ST 2438 is a silicone-free, water-based defoamer from BASF’s FoamStar ST series, designed for effective foam control in aqueous industrial processes including coatings, adhesives, and cleaning formulations. It offers rapid knock-down, lasting suppression, and excellent compatibility with anionic and nonionic systems without compromising gloss or stability.
  • basf foamstar st 2438 defoamer_bc8e3ccb
  • basf foamstar st 2438 defoamer_bc8e3ccb

Features Of BASF FoamStar ST 2438 Defoamer

  1. Highly effective silicone-free defoamer for demanding aqueous systems.

  2. Excellent compatibility with a broad range of water-based formulations, minimizing risk of surface defects.

  3. Rapid foam knock-down and sustained antifoam performance under dynamic process conditions.

  4. Low dosage requirement ensures cost efficiency without compromising efficacy.

  5. Stable in neutral to moderately alkaline pH environments (pH 6–10).

Typical Applications Of BASF FoamStar ST 2438 Defoamer

  1. Architectural coatings and interior/exterior paints.

  2. Industrial maintenance and protective coatings.

  3. Water-based adhesives and sealants.

  4. Construction chemicals including cementitious mortars and tile adhesives.

  5. Textile printing and finishing auxiliaries.

Specifications Of BASF FoamStar ST 2438 Defoamer

Chemical TypePolyether-modified nonionic surfactant blend
Product FormLiquid
AppearanceOpaque white to off-white emulsion
pH (1% aqueous solution)7.0–8.5
Density (20 °C)1.01–1.04 g/cm³
Viscosity (25 °C)100–300 mPa·s
SolubilityReadily dispersible in water; forms stable dilutions
Storage Stability≥12 months in original unopened container at 5–30 °C


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