MBM

MBM, or Methylene Bisthiocyanate, is a fast-acting, non-oxidizing biocide used for microbial control in industrial water treatment, oilfield systems, and pulp & paper processing. It is particularly effective against bacteria, fungi, and algae, even in low concentrations.

Overview

MBM (Methylene Bisthiocyanate) is a highly active, sulfur-containing biocide designed for broad-spectrum microbial control in challenging industrial environments. It exhibits strong efficacy against bacteria, fungi, and algae, including resistant strains in high organic load systems. MBM is a non-oxidizing biocide that works by disrupting microbial enzymatic activity, ensuring fast and irreversible cell death. Its rapid degradation and minimal residue generation reduce the risk of long-term environmental buildup. MBM is especially valued in oil & gas, pulp & paper, and recirculating water systems where quick kill and low persistence are required. MBM is prized for its rapid action, low required dosage, and high efficacy against slime-forming organisms. Its stability in acidic environments and non-foaming properties make it suitable for closed-loop systems. Due to its powerful performance and biodegradability, MBM is commonly used where fast microbial knockdown is essential.

Benefits

  • Rapid Microbial Kill – Fast-acting control of bacteria, fungi, and algae

  • Effective in Acidic pH – Performs well in low pH environments (3–6)

  • Low Dosage Efficiency – Delivers results with minimal chemical usage

  • Non-Foaming Action – Ideal for closed-loop and high-speed systems

  • Degrades Quickly – Breaks down without forming persistent residues

  • Non-Oxidizing Type – Suitable where oxidative corrosion is a concern

Applications

  • Oilfield Injection and Produced Water – Controls microbial-induced corrosion and SRB

  • Cooling Water & Process Water Systems – Eliminates microbial fouling and biofilm

  • Pulp & Paper Mills – Inhibits microbial growth in white water and process lines

  • Industrial Wastewater Treatment – Maintains effluent microbial balance

  • Adhesives & Polymer Emulsions – Preserves products during storage and usage

  • Mining & Metallurgical Operations – Controls biological slime in water circuits

Properties Table

PropertyDetails
Product NameMBM
Chemical NameMethylene Bisthiocyanate
Chemical TypeNon-oxidizing sulfur-based biocide
Active IngredientMBM (typically 98% technical grade)
Physical FormPowder or aqueous solution
AppearancePale yellow to white crystalline powder / light amber solution
OdorSlight sulfuric odor
pH (1% Solution)~4.0 – 5.5
SolubilitySoluble in water and polar solvents
Density @ 25 °C~1.10 – 1.25 g/cm³ (solution)
Flash PointNot flammable
Recommended Use Level50 – 300 ppm depending on system load
pH Stability Range3 – 7
Shelf Life12 months in sealed containers
Packaging Options25 kg drums, 50 kg carboys, 1000 kg IBCs

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