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TCMTB

CAS Number: 21564-17-0

TCMTB is an effective and economical microbicide for preventing fungal attack of skins, hides and timber during processing and subsequent storage. 
TCMTB is specifically recommended for use in chrome tanning and for treatment of timber, bamboo and coconut wood etc to prevent damage and consequent losses caused by microorganisms.

TCMTB for controlling fungicidal growth in industrial applications including leather tanneries is the main application.
(Benzothiazol-2-ylthio)methyl thiocyanate (TCMTB) is a chemical compound classified as a benzothiazole.
TCMTB is an oily, flammable, red to brown liquid with a pungent odor that is very slightly soluble in water. 

TCMTB decomposes on heating producing hydrogen cyanide, sulfur oxides, and nitrogen oxides.
The degradation products are 2-mercaptobenzothiazole (2-MBT) and 2-benzothiazolesulfonic acid

TCMTB is a non-metallic organosulphur compound with excellent fungicidal and bactericidal activity. 
The active ingredient, 2-(Thiocyanomethylthio) benzothiazole (TCMTB), is stable in acidic and alkali media and can be used in a single formulation or combined with other active ingredients. 

TCMTB can be formulated with a range of surface active agents to produce a concentrated blend which can form stable emulsions when diluted with water. 
The surfactants ensure rapid penetration of the TCMTB into a range of organic substrates resulting in long lasting microbial protection against a broad range of bacteria and fungi.
Chemical Composition Active Ingredient: 2-(Thiocyanomethylthio) benzothiazole (TCMTB) Formula C9H6N2S3 

Uses of TCMTB:
TCMTB is used as wideband microbicide, paint fungicide, and paint gallicide.
The active substance approved in 1980 in the United States.
TCMTB is used in leather preservation, for the protection of paper products, in wood preservatives, and against germs in industrial water.

In the US, TCMTB is used as a fungicide for seed dressing in cereals, safflower, cotton and sugar beet.
TCMTB is also used when dealing with fungal problems when extracting hydrocarbons via fracking.

Usage In Leather Industry of TCMTB:
Damp leathers contain nutrients, moisture, and pH levels that make the perfect home for mold spores.
They quickly take hold, and growth of mold changes the physical and chemical properties of leather, causing staining and downgrading. 

The potential costs can be devastating. 
That’s why TCMTB is used.

Summary of Use of TCMTB:

Materials Preservatives of TCMTB:
For use in industrial premises and residential & public access areas as a materials preservative in leather processing liquors/extracts (preservative incorporation), leather products and hides (preservative incorporation), textiles/fibers/cordage (preservative/additive incorporation), paints, sealants, emulsions/slurries/solutions, adhesives (preservative incorporation), coatings (preservative incorporation), , metalworking cutting fluids (preservative incorporation), oil recovery drill muds/packer fluids (preservative incorporation), nonfood pulp/paper and paper products (preservative/additive incorporation), wet-end/ industrial process chemicals (preservative incorporation), caulking compounds, vinyl wallpaper pastes, latex, dispersed colors, fuels (additive incorporation) and paper/paperboard surface treatments.

Wood Preservative of TCMTB:
TCMTB is used to control sapstain and mold in commercial/industrial premises and residential & public access areas on forest products (seasoned, unseasoned, unpainted), lumber, poles/posts, timbers, wood walls, wood (particleboard), wood shingles (roof), wood pressure treatment, wood millwork, wood products, wood sashes, wet lap/sheet pulp, wood surfaces, wood porches/decks, wood fences, wood homes/houses, wood steps, window frames, wood doors, wood siding and wood barns.

Industrial Processes and Water Systems of TCMTB:
For use in commercial and industrial water cooling tower systems, pulp and paper mill systems, secondary oil recovery injection water, sewage 4 systems, non-potable water storage tanks, fuel and oil storage tanks bottom water, industrial disposal water, waste water systems, sewage effluent water, storage tanks, metalworking cutting fluids and water-based cutting fluid mixes

Agricultural of TCMTB:
TCMTB is used as a fungicide for treating seeds (barley, oats, rice, wheat,safflower, cotton and sugar beets) in commercial and on-farm settings.

Formulation Types of TCMTB:
Liquid ready-to-use, soluble concentrate, emulsifiable liquid, suspendedemulsion, formulation intermediate, wettable powder.

Method and Rates of Application:
Equipment for Antimicrobial Use: TCMTB end use products are added during the manufacturing process of treated articles and materials. 
Examples include: TCMTB being added directly to pulp slurry by chemical metering pump; dipping/pressure impregnation or brush/low pressure spraying of TCMTB for sapstain control; TCMTB directly mixed into solution for leather preservation

Equipment for Agricultural Use of TCMTB:
There are two primary methods for treating seeds: the batch system and the continuous flow system. 
There are various pieces of equipment used for on-nursery seed treatment such as drum mixers, other devices using augers, cement mixers, hand cranked revolving drums, and gravity feed systems. 
TCMTB treated seed can be planted with a wide range of equipment.

Dosage rates of 0.025-0.2% (250-2,000 ppm) TCMTB solution can be used during various stages of leather processing. 
Application rates can range from 0.026 lbs ai/100 lbs seed to 0.093 lbs ai/100 lbs of seed for seed treatment. 
Application rates can range from 5.6 to 44.0 kg antisapstain product/100 L. of water for antisapstain treatment. 

Use Classification: General use.

Features of TCMTB:
TCMTB 80contains a certified 80% TCMTB as active ingredient and has been proven to be an effective broad spectrum biocide. 
TCMTB can be formulated to produce stable emulsions in water. 

TCMTB is readily formulated with a range of surface active agents. TCMTB is stable in both acid and alkali media, thus extending TCMTB range of industrial biocidal applications. 
Availability TCMTB is available in 25 kg drums or other pack sizes upon request. 

Applications of TCMTB:
TCMTB is a proven broad spectrum biocide which can be used in a wide range of industrial applications including:- Leather Preservation the product's excellent fungicidal activity and acid / alkali stability make TCMTB the preferred product for leather preservation applications. 

Timber Preservation of TCMTB:
TCMTB has proven highly effective in the prevention of sap-stain in freshly felled timber, and can also provide excellent long-term preservation in treated wood samples. 

Paper and Board Manufacture of TCMTB:
Suitable formulations of TCMTB have been developed to control all aspects of algal, fungal and bacterial contamination in the neutral / alkali paper and boardmaking manufacturing processes. 
Industrial Cooling Water Treatment using a combination of TCMTB and other active ingredients has proven effective in the treatment of industrial process waters. 

Paint and Coatings Formulation of TCMTB:
TCMTB is an effective biocide for surface coatings, giving both in-can and film protection.

Application of TCMTB In Metalworking:
TCMTB is effective against microorganisms which degrade and foul metalworking fluids. 
TCMTB is specifically recommended for use as a tankside additive to prevent the growth of fungi and bacteria in diluted, end-use soluble oil, semi-synthetic and synthetic fluid systems. 
TCMTB is recommended for use in soluble oil and semi-synthetic metalworking fluid concentrates for use in cutting fluids. 

Application In Construction Industry of TCMTB:
TCMTB is a microbicide concentrate that is used as a preservative for caulking-sealants and vinyl acetate wallcovering adhesives. 
TCMTB addition to these products will inhibit the growth of fungi (mold, “mildew”) that often cause the discoloration, unsightly appearance, and degradation of these compounds, particularly when they are exposed to humid environments. 
TCMTB is especially recommended for the protection of caulking-sealants intended for use around bath tubs, showers, and bathroom tiles, and vinyl acetate adhesives used on fabrics and paper for covering walls.

TCMTB is used to inhibit bacterial and fungal degradation of water-based and water-soluble or emulsifiable cutting fluids and coolants used in metalworking operations. 
TCMTB should be added to the diluted cutting fluid at a rate that will provide 100–200 parts per million (ppm) TCMTB 80 (weight/weight) after final dilution with water. 

To prevent fungal growth on the inside walls of the diluted metalworking fluid storage tanks, higher concentrations of TCMTB 80 are needed. 
For this application, TCMTB is recommended that TCMTB 80 be added to the diluted fluid as TCMTB is prepared to provide a concentration of 500–750 ppm. 
To ensure complete dispersion, product should be added to the system at a point of vigorous agitation.

TCMTB was first registered as an active ingredient by the United States Environmental Protection Agency (EPA) on January 21, 1980. 
Currently, there are 27 products containing TCMTB. 

TCMTB products are used in commercial/institutional premises and residential and public access areas. 
As an antimicrobial pesticide, TCMTB is used largely as a materials preservative (e.g., leather products and hides, pulp/paper products, latex, wallpaper, paints, carpets). 

TCMTB is a slimicide regulated by the FDA (21 CFR 176.300) for controlling bacteria, fungi and yeasts, which cause deterioration of paper and paperboard products. 
TCMTB is also used as a fungicide for commercial and on-farm seed treatment. 

TCMTB has 23 tolerances in the 40 CFR 180.288 for use as a fungicide on barley, sugar beets, cotton, oats, rice, safflower and wheat. 
Seed treatment use of TCMTB are not being supported by the technical registrant but are being supported by end-users.

Identifications of TCMTB:
CAS Number: 21564-17-0 
EINECS Number (EU) 224-445-0 
ENCS Number (Japan) 5-3424 ECL Number (Korea) KE33783 Properties 
Commercial Product Name: EXOCIDE TCM 80
Appearance: dark red to brown liquid 
Specific Gravity: 1.4 at 25ºC
Odour: faint 
Flash Point (Open Cup): 189ºC 
Stability: Stable under normal storage conditions. 
Decomposes: above 60ºC 
Viscosity (20ºC): 7100 cP 
Solvent Solubility: Methanol - 7 %, Ethanol - 5 % N-Methylpyrrolidone - Miscible Water - 0.01 % Specification Assay (as TCMTB) Minimum 80% A.I.2

Chemical properties of TCMTB:
TCMTB is a vivid orange liquid with a strong sour and pungent odor (like mineral oil). 
TCMTB is a liquid and, therefore, has no melting point. 

TCMTB has a boiling point of 1910C, and decomposition begins at 741.9 mm Hg. 
TCMTB has a log Kow of 3.23 at 20 oC

Names of TCMTB:

IUPAC name of TCMTB:
[(1,3-benzothiazol-2-yl)sulfanyl]methyl thiocyanate

Other names of TCMTB:
2-(Thiocyanomethylthio)benzothiazole
Thiocyanic acid 2- (benzothiazolethio) methyl ester
Casacide
Nipacide TCM 80
2-(Benzothiazolythio)methyl thiocyanate
TCMTB
TCMB
Busan 72

Common name of TCMTB:
TCMTB or TCMB

Chemical name of TCMTB:
2-(thiocyanomethylthio)benzothiazole

Synonyms of TCMTB:
(1,3-Benzothiazol-2-ylsulfanyl)methyl thiocyanate
(1,3-Benzothiazol-2-ylsulfanyl)methylthiocyanat
(1,3-benzothiazol-2-ylthio)methyl thiocyanate
1213014
2-(thiocyanatomethylthio)-1,3-benzothiazole
2-(thiocyanatomethylthio)benzothiazole
21564-17-0
244-445-0
2-Tiocianometiltiobenzotiazolo
AI3-29396-X
Benthiazole
MFCD00072503
T56 BN DSJ CS1SCN
TCMTB
Thiocyanate de (1,3-benzothiazol-2-ylsulfanyl)méthyle
Thiocyanic acid 2-(benzothiazolylthio)methyl ester
Thiocyanic acid, (2-benzothiazolylthio)methyl ester
Tolcide 2230
XK8150900
(2-BENZOTHIAZOLYLTHIO)METHYL THIOCYANATE
(benzothiazol-2-ylthiomethyl)thiocarbonitrile
(thiocyanomethylthio)benzothiazole
1,3-benzothiazol-2-ylsulfanylmethyl thiocyanate
2-((Thiocyanatomethyl)thio)benzo[d]thiazole
2-((Thiocyanatomethyl)thio)benzothiazole
2-(4-Thiocyanomethythio)Benzothiazole
2-(thiocyanatomethylsulfanyl)-1,3-benzothiazole
2-(Thiocyanatomethylthio)benzo[d]thiazole
2-[(Thiocyanatomethyl)thio]benzothiazole
2-Tiocianometiltiobenzotiazolo
5GE166YVQV
8-Methoxyquinoline
AI3-29396-X
Alentisan
benthiazole
Benzothiazole, 2-((thiocyanatomethyl)thio)- (8CI)
Busan
Busan (30)
Busan 30-1
Busan 30A
Busan 30I
Busan 72A
Delsan 30
Ichiban 
methyl 8-quinolyl ether
Protector 3L
Sancelant TMB
Superdavloxan
TCMTB (Busan)
thiocyanic acid (1,3-benzothiazol-2-ylthio)methyl ester
Thiocyanic acid (2-benzothiazolylthio)methyl ester
Thiocyanic acid, (2-benzothiazolylthio) methyl ester
Tolcide 2230 (90per cent)
UNII:5GE166YVQV
UNII-5GE166YVQV
 

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