Proxel® GXL

Proxel® GXL by Arxada is a preservative used for industrial water-based products against spoilage from bacteria, yeasts, and fungi. It has a non-specific mode of action which means that bacterial resistance is very unlikely to occur.
  • It boils without flashing and is stable in the presence of amines.
  • The concentration of Proxel® GXL required to adequately preserve a product depends on several factors which include susceptibility of the system to microbiological degradation, extent to which micro-organisms can gain access, species involved, pH, temperature, and length of time for which protection is required.
  • Proxel® GXL is suitable for use in synthetic polymer emulsions, emulsion paints, printing inks, paper coating compositions.
  • The recommended dosage is 0.05-0.15% w/w for the applications.

Overview

Proxel® GXL is a formaldehyde-free, broad-spectrum in-can preservative specifically designed for water-based industrial products prone to microbial contamination. It features 1,2-Benzisothiazolin-3-one (BIT) as its primary active ingredient and offers exceptional protection against bacteria, yeast, and mold. Its low odor, high compatibility across a wide pH range, and low use-level requirement make it ideal for sensitive formulations. Manufactured by LANXESS, Proxel® GXL ensures product stability and integrity without compromising on environmental safety or regulatory compliance.

Benefits

  • Formaldehyde-Free Composition – Ideal for eco-label compliant and low-toxicity products

  • Broad-Spectrum Efficacy – Effective against bacteria, yeast, and fungi

  • Excellent pH Stability – Performs across a pH range of 4 to 12

  • Low Odor Profile – Suitable for applications with sensory or odor constraints

  • Efficient at Low Dosage – Reduces formulation cost while providing robust protection

  • High Compatibility – Integrates well with surfactants, emulsifiers, and thickeners

Applications

  • Water-Based Paints & Coatings – Offers long-term preservation for emulsion paints and latex formulations

  • Adhesives & Glues – Prevents microbial growth in water-based PVA and acrylic adhesives

  • Printing Inks – Ensures microbial stability in aqueous ink systems

  • Polymer Emulsions – Protects acrylic, styrene-acrylic, and PVAc dispersions

  • Sealants & Fillers – Used in joint fillers, caulks, and silicone-based sealants

  • Construction Chemicals – Effective in cement-based systems, concrete admixtures, and grouts

Properties Table

PropertyDetails
Product NameProxel® GXL
ManufacturerLANXESS
Chemical TypeIn-can preservative (BIT-based)
Active Ingredient1,2-Benzisothiazolin-3-one (BIT) – 1.5%
Physical FormLiquid
AppearanceClear to pale yellow liquid
OdorLow odor
pH (as supplied)~10.0 – 11.0
SolubilityFully soluble in water
Density @ 20 °C~1.03 g/cm³
Flash Point>100 °C
Recommended Use Level0.05% – 0.15% depending on the application
pH Stability Range4 – 12
Shelf Life18 months (in unopened original packaging)
Packaging Options25 kg pails, 200 kg drums, 1000 kg IBC totes

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