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

Dow BIOBAN 551S Fungicide

Dow BIOBAN 551S Fungicide is a broad-spectrum, water-based biocide from Dow’s BIOBAN series, formulated with active ingredient 2-methyl-4-isothiazolin-3-one (MIT) for effective microbial control in industrial water systems, paints, and coatings. It offers rapid kill, stability across pH ranges, low odor, and compliance with global regulatory standards including EPA and EU BPR.
  • dow bioban 551s fungicide_9374efd1
  • dow bioban 551s fungicide_9374efd1

Features Of Dow BIOBAN 551S Fungicide

  1. Broad-spectrum fungicidal activity against key spoilage microorganisms including Aspergillus, Penicillium, and Cladosporium species.

  2. Stable and effective in acidic to neutral pH ranges (pH 3.0–7.5), supporting compatibility with a wide range of industrial formulations.

  3. Low volatility and non-volatile residue profile, minimizing odor impact and enhancing workplace safety during handling.

  4. Highly soluble in water and polar organic solvents, enabling uniform dispersion in aqueous-based systems without precipitation.

  5. Designed for long-term preservation—provides robust protection against fungal growth throughout product shelf life under ambient storage conditions.

Typical Applications Of Dow BIOBAN 551S Fungicide

  1. Water-based architectural coatings and paints.

  2. Industrial metalworking fluids and coolant emulsions.

  3. Adhesives, sealants, and caulking compounds.

  4. Construction additives including cementitious and gypsum-based slurries.

  5. Nonwoven fabric treatments and wet-strength resins for hygiene products.

Specifications Of Dow BIOBAN 551S Fungicide

Chemical TypeIsothiazolinone-based biocide (mixture of 1,2-benzisothiazolin-3-one and 5-chloro-2-methyl-4-isothiazolin-3-one)
Product FormLiquid concentrate
AppearanceClear, pale yellow to amber liquid
pH (1% aqueous solution)3.0 – 5.0
Density (20°C)1.12 – 1.16 g/cm³
SolubilityMiscible with water and common polar solvents (e.g., glycols, alcohols)
Primary ApplicationsFungal preservation in water-based industrial formulations
Key FeaturesNon-oxidizing, non-leaching, low-foaming, and compatible with anionic, nonionic, and amphoteric surfactants


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