Methylene Bis Thiocyanate


Methylene bis thiocyanate is a light yellow acicular crystalline biocide chemical. The MBT biocide melting point is 100-104 deg. C, sight soluble in other organic solvents, soluble in water at the degree of 0.4%, and stable under acid conditions.

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Structure Formula:

methylene bis thiocyanate structure formula


Item Index
Appearance Pale Yellow free-flowing powder / Crystals
Melting Point 101 deg c. Min.
Assay 98% Min.
Moisture 0.5% Max.
Acetone Insolubles 1.0% Max.
Inorganic Salts 1.0% Max.


Methylene bis thiocyanate is an efficient, broad-spectrum germicide & algaecide & displaying strong extermination effects against germs, fungus, and algae existing in circulating water. MBT biocide maintains long-term effects and is applicable to broad pH values and temperature ranges. Using 3-4ppm methylene bis thiocyanate kills over 90% of nitrosation germs, sulfate-reducing germs, colon bacillus, anti-nitrosation germs, and many other types of germs. Methylene bis thiocyanate liquid is stable, and methylene bis thiocyanate can decompose shortly in an application. MBT biocide has an analysis method and is easy to monitoring, so methylene bis thiocyanate is safe for discharge.

Methylene bis thiocyanate can increase oil production by reducing oil layer contamination, preventing clay from expanding and disinfecting. Methylene bis thiocyanate can also be used to protect packing paper from going molding, treat circulating cooling water, and remove marine organisms from marine liners. Methylene bis thiocyanate has excellent effects of anti-corrosion, germicide, and algaecide for electrical materials, bamboo and woodenware, coatings, rubber, canvas, glue, and ink.

Methylene bis thiocyanate 1% emulsion is a kind of efficient, broad-spectrum, and safe agricultural germicide, having good effects against diseases of rice and wheat. Within the recommended quantity, methylene bis thiocyanate is safe for rice seed and increases germination percentage. As methylene bis thiocyanate is an organic thiocyano germicide, it can solve the problem of anti-pesticide property developed by the widely used absorbing germicides. When used in treating rice seed, methylene bis thiocyanate does not need presoaking or after-washing. Methylene bis thiocyanate can be used directly in germination and seeding.

The MBT biocide also can be made of safe fish medicine to prevent many kinds of fish disease. Methylene bis thiocyanate is a good disinfectant in the water for various breed aquatics.

  1. Control of microbial activity in cooling water systems.
  2. Control of slime in Pulp & Paper Manufacturing.
  3. Preservation of paints, adhesives, synthetic polymer lattices, and latex emulsions.
  4. Anti-microbial treatment of water thinned products, thickeners, and slurries.
  5. Preservation of wood and wood products. 6. Preservation of Leather and Leather products.
  6. Oil well brines and drilling mud.

Packing and Storage:

Normally packed in 25kg/paper bag or fiber drum, also be packed as required.

Store methylene bis thiocyanate in cool, dry, and ventilative places. Keep away from incompatible substances. Methylene bis thiocyanate can not be stored together with food and feedstuff.


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