PRODUCTS

2-MERCAPTOBENZOTHIAZOLE (MBT)

2-mercaptobenzothiazole (MBT) is also used as an intermediate in the production of pesticides such as 2-(thiocyanomethylthio)benzothiazole, and sodium and zinc salts of 2-mercaptobenzothiazole are approved for use as pesticides by the EPA.
2-mercaptobenzothiazole (MBT) is also used in pesticides, water treatment chemicals, and in the manufacture of various other products.

CAS Number: 149-30-4
EC Number: 205-736-8
MDL number: MFCD00005781
Chemical formula: C7H5NS2
Molecular Formula: C7H5NS2 / C6H4SNCSH
Molecular Weight: 167.25 g/mol

SYNONYMS:
2-Mercaptobenzothiazole, 2-Benzothiazolethiol, Benzothiazole-2-thiol, 2-Benzothiazyl Mercaptan, 2-Benzothiazolyl Mercaptan, 2-Thiobenzothiazole, 2(3H)-Benzothiazolethione, Benzothiazole-2-thione, Mercaptobenzothiazole, MBT, Accelerator M, Vulkacit M, Captax, Rhenogran MBT, Methylobenzothiazole (obsolete trade name), Mercapto-2-benzothiazole, 2-MBT, 2(3H)-Benzothiazolethione, 2-Benzothiazolethiol, Accel M, Accelerator M, Benzothiazole, mercapto-, Benzothiazolethiol, Captax, Dermacid, Ekagom G, Kaptaks, Kaptax, Mebetizole, Mebithizol, Mercaptobenzothiazol, Mercaptobenzothiazole, Mercaptobenzthiazole, Mertax, MBT, Nuodeb 84, Pneumax MBT, Rotax, Royal MBT, Soxinol M, Thiotax, Vulkacit M, Vulkacit Mercapto, Vulkacit Mercapto/C, 2-Benzothiazolinethione, 2-Mercaptobenzthiazole, 2-MBT, AG 63, Sulfadene, USAF GY-3, USAF XR-29, 2-Mercptobenzothiazole, 2-Merkaptobenzotiazol, 2-Merkaptobenzthiazol, NCI-C56519, Pennac mbt powder, Rokon, Benzothiazole-2-thione, 2-Benzothiazolyl mercaptan, Nocceler M, Accelerator Mercapto, Perkacit MBT, Benzothiazole, 2-mercapto-, 1,3-Benzothiazole-2-thione, Benzo[d]thiazole-2-thiol, 2-Mercaptobenzothiazole (2-MBT), benzothiazole-2-thiol, 2-Thiocarbamidothiophenol, 2-Benzothiazolethiol, 2-Benzothiazolthiol, 2-MBT, 2-Mercaptobenzothiazole, MBT, Mercapto(2-)Benzothiazole, Mercaptobenzothiazole, Mercaptobenzothiazole, MBT, Benzothiazole-2-thiol, 2-Benzothiazolethiol, 2-MBT, 2-Mercaptobenzothiazol, Thiazolethiol, Benzothiazolethiol, Captax, 2-MERCAPTOBENZOTHIAZOLE [GREEN BOOK], FT-0612758, FT-0699702, M0055, M0247, EN300-21479, D70518, F71266, 2-Mercaptobenzothiazole, technical, >=90% (T), AB00053232-04, A808877, A927195, AE-641/31369054, Mercaptobenzothiazole, 2-, (2-Benzothiazolethiol), Mercaptobenzothiazole, 2-, (2-Benzothiazolthiol), Q904160, Q-200294, BRD-K55160477-001-02-1, BRD-K55160477-001-03-9, F3066-0005, Z104499140, 27157-85-3, XO9, 2-Benzothiazolethiol, MBT, 2(3H)-Benzothiazolethione, 2-Benzothiazolethiol, Accel M, Accelerator M, Benzothiazole, mercapto-, Benzothiazolethiol, Captax, Dermacid, Ekagom G, Kaptaks, Kaptax, Mebetizole, Mebithizol, Mercaptobenzothiazol, Mercaptobenzothiazole, Mercaptobenzthiazole, Mertax, MBT, Nuodeb 84, Pneumax MBT, Rotax, Royal MBT, Soxinol M, Thiotax, Vulkacit M, Vulkacit Mercapto, Vulkacit Mercapto/C, 2-Benzothiazolinethione, 2-Mercaptobenzthiazole, 2-MBT, AG 63, Sulfadene, USAF GY-3, USAF XR-29, 2-Mercptobenzothiazole, 2-Merkaptobenzotiazol, 2-Merkaptobenzthiazol, NCI-C56519, Pennac mbt powder, Rokon, Benzothiazole-2-thione, 2-Benzothiazolyl mercaptan, Nocceler M, Accelerator Mercapto, Perkacit MBT, Benzothiazole, 2-mercapto-, 1,3-Benzothiazole-2-thione, Benzo[d]thiazole-2-thiol, 2-Mercaptobenzothiazole (2-MBT), benzothiazole-2-thiol, 2-Thiocarbamidothiophenol, 2-Benzothiazolethiol, 2-Benzothiazolthiol, 2-MBT, 2-Mercaptobenzothiazole, MBT, Mercapto(2-)Benzothiazole, Mercaptobenzothiazole, 2(3H)-Benzothiazolethione, 2-Benzothiazolethiol, 2-Benzothiazolinethione, Captax, MBT, 2-Mercaptobenzothiazole, 2-Mercaptobenzthiazole, Mertax, Nuodeb 84, Rotax, Royal MBT, Thiotax, Mercaptobenzothiazole, Pneumax MBT, Mercaptobenzthiazole, Soxinol M, Vulkacit Mercapto, Ekagom G, Vulkacit M, Kaptax, Dermacid, Accelerator M, Kaptaks, 2-MBT, Mebetizole, Mebithizol, Vulkacit Mercapto/C, Accel M, 2-Benzothiazolyl mercaptan, Nocceler M, MBT (vulcanization accelerator), Aero Promoter 412, Sanceler M, Vulkacit Mercapto/MG, 2,3-Dihydrobenzothiazole-2-thione, Mebetizol, Wobezit M, Nonflex NB, Benz-1,3-thiazolidine-2-thione, 1,3-Benzothiazole-2-thione, Vulkafil ZN 94TT01, 2-Sulfanylbenzothiazole, Nocceler M-P, Perkacit MBT, 1,3-Benzothiazole-2-thiol, NSC 2041, Vulkacit Mercapto MG/C, Aero 407, Sanceler M-G, Benzothiazolethiol, Benzo[d]thiazole-2-thiol, 2-Mercapto-1H-benzothiazole, Oricel M, RU 3, Captax MBT, DT 402, OCID, M 2, M 2 (rust inhibitor), accelerator MBT, NB, Rubator MBT, MBT-2, Accelerant M, Rhenogran MBT 80, MBT 80, 2,3-Dihydro-1,3-benzothiazole-2-thione, 2-Mercaptobenzo[d]thiazole, Rhenogran MBT, 1321-08-0, 4464-58-8, 12640-90-3, 55199-93-4, 81605-65-4, 112242-83-8, 119170-41-1, 885216-62-6, 2213445-86-2, MBT, Mercaptobenzothiazole, 2-Benzothiazolethione, 2-Benzothiazolethiol, Benzothiazole-2-thione, 2-Benzothiazolethiol, Mercapto-2 benzothiazole, Benzothiazole-2-thiol, Benzo[d]thiazole-2(3H)-thione, MBT, Drmacid, Sanceler M, Wobezit M, Nonflex NB, Oricel M, Captax MBT, Nocceler M-P, Sanceler M-G, 2-Benzotiazoletiol, MBT, captax, 2-benzothiazolthiol, benzothiazol-2-thiol, 2-mercaptobenzotiazol, mercapto-benzothiazole, 2-Benzothiazolethione, 2-Benzotiazolinetiona, Vulkacit Mercapto/MG, 2-mercaptobenzothiazol, Aero Promoter 412, 2-mercapto-benzthiazole, Spectrum_001669, SpecPlus_000728, Vulkacit Mercapto MG/C, Aero 407, Vulkafil ZN 94TT01, 155-04-4, 57948-09-1, Spectrum2_001666, Spectrum3_001665, Spectrum4_000628, Spectrum5_001400, 2(3H-Benzothiazolethione, 1,3-benzotiazol-2-tiol, Mercaptobenzothiazole, 2-, 2 (3H)-Benzotiazoltiona, 2(3H)-Benzothiazoletione, 2-mercaptano Benzotiazolil, 1,3-benzotiazol-2-tiona, benzo[d]thiazole-2-thione, 13-Benzothiazole-2-thiol, 2-mercapto-1H-benzotiazol, Epitope ID:116044, Benzothiazole, 2-mercapto-, 1 3-Benzothiazole-2-thiol, 2-Benzothiazolethiol (8CI), 2-Mercapto-1H-benzothiazole, SCHEMBL23237, 1 3-Benzothiazole-2-thione, 1,3-Benzothiazole-2-thione, BSPBio_003449, KBioGR_001216, KBioSS_002149, BIDD:ER0373, DivK1c_006824, SPECTRUM1504225, 2-MercaptobenzothiazoleDermacid, SPBio_001851, 2-Mercaptobenzothiazole, 97%, 2-Sulphanyl-1,3-benzothiazole, CHEMBL111654, RU 3, 155-04-4 (zinc salt), MBT (vulcanization accelerator), WLN: T56 BN DSJ CSH, 2,3-Dihidrobenzotiazol-2-tiona, Vulkacit M, vulkacit merkapto/c, Benz-1 3-thiazolidine-2-thione, KBio1_001768, KBio2_002149, KBio2_004717, KBio2_007285, KBio3_002669, 2-Mercaptobenzothiazole (2-MBT), 7778-70-3 (potassium salt), C7-H5-N-S2, LS-61, 2 3-Dihydrobenzothiazole-2-thione, 2-Benzothiazolinethione (6CI7CI), AMY23224, MERCAPTOBENZOTHIAZOLE [HSDB], 2-Benzothiazolinethione (6CI 7CI), Tox21_113450, Tox21_400016, 1,3-Benzothiazol-2-yl hydrosulphide, 2-MERCAPTOBENZOTHIAZOLE [MI], BDBM50444459, c1019, CCG-39092, DT 402, STK499589, MERCAPTOBENZOTHIAZOLE [WHO-DD], 2-MERCAPTOBENZOTHIAZOLE [IARC], AKOS000119128, AKOS002337495, 1,3-Benzothiazol-2-yl hydrosulfide #, CS-W017829, DB11496, FS-1801, HY-W017113, 4162-43-0 (copper(+2) salt), NCGC00091643-01, NCGC00091643-02, NCGC00091643-04, NCGC00091643-05, NCGC00091643-06, NCGC00091643-09, NCGC00091643-10, NCGC00091643-12, AC-11606, 2-Mercaptobenzothiazole, MBT, Captax, Accelerator M, Vulkacit M, 2-Benzothiazolethiol, Benzo[d]thiazole-2-thiol, Benzothiazole-2-thiol

2-Mercaptobenzothiazole (MBT) is an organosulfur chemical mainly used as a rubber vulcanization accelerator, a metal corrosion inhibitor, and a material preservative.
2-mercaptobenzothiazole (MBT) appears as a pale yellow to tan crystalline powder with a formula of C₇H₅NS₂ and a melting point of 177–181 °C
2-mercaptobenzothiazole (MBT) is an organosulfur compound with the formula C6H4(NH)SC=S.

A white solid, 2-mercaptobenzothiazole (MBT) is a reagent in organic synthesis and, notably, for the sulfur vulcanization of rubber.
2-Mercaptobenzothiazole (MBT) is a chemical compound widely used as a vulcanization accelerator in the rubber industry.
2-mercaptobenzothiazole (MBT) has the chemical formula C7H5NS2.

2-mercaptobenzothiazole (MBT) is found in, among other things:
in shoe soles, in tires, in cables, in rubber bands, in rubber gloves, in condoms, in hard rubber, in products for controlling fungi (fungicides), in veterinary preparations, in technical cutting oils, as a stabilizer in the photographic industry, as a reagent for the determination of metals in quantitative analysis, as an auxiliary material in the electrochemical coating of metal surfaces.

2-mercaptobenzothiazole (MBT) was developed at Goodyear in 1916 by Clayton Wing Bedford (1885–1933) (Captax).
2-Mercaptobenzothiazole (MBT) is an oil-coated primary accelerator designed for use with both natural and synthetic rubbers.
2-mercaptobenzothiazole (MBT) offers excellent processing performance while being non-staining and non-discoloring, making it ideal for applications where maintaining the appearance of the final product is critical.

2-mercaptobenzothiazole (MBT) is a rubber chemical, an accelerant of vulcanization.
2-mercaptobenzothiazole (MBT) is contained in the "mercapto mix".
The most frequent occupational categories are metal industry, homemakers, health services and laboratories, building industries, and shoemakers.

2-mercaptobenzothiazole (MBT) is an organic compound from the group of heteroaromatics.
2-mercaptobenzothiazole (MBT) is an important variety of thiazole rubber vulcanization accelerators.
At the same time, 2-mercaptobenzothiazole (MBT) is also an important auxiliary agent for oxidation and corrosion resistance.

2-mercaptobenzothiazole (MBT) is a pale yellow powder or granule.
2-mercaptobenzothiazole (MBT) has an unpleasant smell.
The melting point of 2-mercaptobenzothiazole (MBT) is above 173.0°C.

The relative density of 2-mercaptobenzothiazole (MBT) is 1.41 to 1.48.
2-mercaptobenzothiazole (MBT) is poorly soluble in water and n-hexane.
2-mercaptobenzothiazole (MBT) is easily soluble in acetone.

2-mercaptobenzothiazole (MBT) is soluble in ethanol.
2-mercaptobenzothiazole (MBT) is slightly soluble in benzene.
2-mercaptobenzothiazole (MBT) is acidic.

2-mercaptobenzothiazole (MBT) is a general-purpose vulcanization accelerator and is widely used in various rubbers.
2-mercaptobenzothiazole (MBT) has a vulcanization-promoting effect on natural rubber and synthetic rubber which is usually vulcanized with sulfur.
However, activation of zinc oxide, fatty acid, etc. is required before use.

For example, in combination with dithiothiuram and bismuth dithiocarbamate, 2-mercaptobenzothiazole (MBT) can be used as a vulcanization accelerator for butyl rubber.
2-mercaptobenzothiazole (MBT) can be used together with tribasic cis-butyl succinate for use in light-colored, water-resistant chlorosulfonated polyethylene compounds.
2-mercaptobenzothiazole (MBT) is often used in combination with dithiocarbamate in latex.

2-mercaptobenzothiazole (MBT) is easily dispersed and not contaminated in rubber.
However, due to its bitter taste, 2-mercaptobenzothiazole (MBT) is not suitable for rubber products that come into contact with food.
The dye S-GL (C.I. Disperse Red 121) was prepared by refluxing 2-mercaptobenzothiazole (MBT) with 1-amino-4-nitroindole and potassium carbonate in dimethylformamide for 3 h.

2-mercaptobenzothiazole (MBT) is used for the dyeing of polyester and its blended fabrics.
In addition, 2-mercaptobenzothiazole (MBT) is also a reagent for chemical analysis.
2-mercaptobenzothiazole (MBT) is low in toxicity and has a stimulating effect on skin and mucous membranes.

2-mercaptobenzothiazole (MBT) is one of the effective corrosion inhibitors for copper or copper alloys.
When the cooling system contains copper equipment and the raw water contains a certain amount of copper ions, 2-mercaptobenzothiazole (MBT) can be added.
2-mercaptobenzothiazole (MBT) can prevent corrosion of copper.

2-mercaptobenzothiazole (MBT) is an intermediate of the herbicide mefenacet and is also a rubber accelerator and an intermediate thereof.
2-mercaptobenzothiazole (MBT) has a slightly foul odour and bitter taste, non-poisonous.

2-mercaptobenzothiazole (MBT) is easily soluble in ethyl acetone, acetone, dilute solution of sodium hydroxide and sodium carbonate, soluble in ethyl alcohol, not easily soluble in benzene, insoluble in water and gasoline.
2-mercaptobenzothiazole (MBT) is a pale yellow to tan crystalline powder with a disagreeable odor.

USES and APPLICATIONS of 2-MERCAPTOBENZOTHIAZOLE (MBT):
2-mercaptobenzothiazole (MBT) is also used as a corrosion inhibitor in cutting fluids or in releasing fluids used in the pottery industry.
2-Mercaptobenzothiazole (MBT) is an industrial chemical that is used principally in the manufacture of rubber.
Vulcanization accelerator for type of rubber usually used in the production of household rubber gloves rather than medical rubber gloves; corrosion inhibitor in metal-working fluids, detergents, antifreeze, and photographic emulsions.

In addition, 2-mercaptobenzothiazole (MBT) is formed as a reaction product from some vulcanisation accelerators in elastomer production.
2-mercaptobenzothiazole (MBT) is an accelerator, retarder, and peptizer for natural and other rubber products, but is also used as a corrosion inhibitor in soluble cutting oils and antifreeze mixtures; in greases, adhesives, photographic-film emulsions; detergents; veterinary products, such as tick and flea powders and sprays.
2-mercaptobenzothiazole (MBT) is added to polyether polymers as a stabilizer to resist damage by air and ozone, and is a component approved in the USA in some skin medications for dogs (HSDB, 2015).

2-Mercaptobenzothiazole (MBT) is a slightly foul odor and bitter taste, non-poisonous.
2-mercaptobenzothiazole (MBT) is easy to soluble in ethyl acetone, acetone, a dilute solution of sodium hydroxide, and sodium carbonate.
2-mercaptobenzothiazole (MBT) can be soluble in ethyl alcohol, not easily soluble in benzene, and insoluble in water and gasoline.

2-mercaptobenzothiazole (MBT) is a hemi-ultra accelerator, extensively used in vulcanization of natural and synthetic rubbers.
2-mercaptobenzothiazole (MBT) is mainly used in manufacture of rubber tire, rubber belts, rubber shoes and other technical rubber goods.
Uses of 2-mercaptobenzothiazole (MBT): Accelerator, retarder, and peptizer for natural and other rubber products such as shoes,gloves, rubber in undergarments and clothing, condoms and diaphragms, medical devices, toys, tires and tubes, renal dialysis equipment, swimwear.

2-mercaptobenzothiazole (MBT) is used fungicide.
2-mercaptobenzothiazole (MBT) is used corrosion inhibitor in soluble cutting oils and antifreeze mixtures.
2-mercaptobenzothiazole (MBT) is also used in greases, adhesives, photographic film emulsions detergents, veterinary products such as tick and flea powders and sprays.

2-mercaptobenzothiazole (MBT) is also used in other applications like corrosion inhibitors and pesticides.
2-mercaptobenzothiazole (MBT) is often used in combination with other accelerator systems.
When used in combination with diethyldithiocarbamate diethylamine, 2-mercaptobenzothiazole (MBT) can be vulcanized at room temperature.

When 2-mercaptobenzothiazole (MBT) is used as an electroplating additive, it is also called an acid copper plating brightener.
2-mercaptobenzothiazole (MBT) is used as a paving brightener when bright copper plating with copper sulfate as the main salt.
2-mercaptobenzothiazole (MBT) is mainly used as a brightener for bright copper sulfate.2-mercaptobenzothiazole (MBT) has a good leveling effect.

2-mercaptobenzothiazole (MBT) can also be used as a brightener for cyanide silver plating.
In addition, 2-mercaptobenzothiazole (MBT) is also used in the preparation of pesticide fungicides, nitrogen fertilizer synergists, cut-off oils and lubricant additives, organic anti-ashing agents in photographic chemistry, metal corrosion inhibitors, and the like.

2-mercaptobenzothiazole (MBT) is primarily used as a sulfur vulcanization accelerator in the manufacture of natural rubber and synthetic rubber products.
2-mercaptobenzothiazole (MBT) is extensively employed in the production of automobile tires, truck tires, bicycle tires, conveyor belts, transmission belts, industrial hoses, seals, gaskets, O-rings, cable insulation, vibration isolators, rubber rollers, footwear, rubber sheets, molded mechanical goods, and numerous technical rubber components.
2-mercaptobenzothiazole (MBT) is frequently combined with secondary accelerators such as diphenylguanidine (DPG), tetramethylthiuram disulfide (TMTD), zinc dithiocarbamates, and sulfenamides to improve cure rate, enhance crosslink efficiency, and optimize physical properties.

2-mercaptobenzothiazole (MBT)'s delayed curing characteristics make it particularly suitable for thick rubber articles and products requiring long processing times before vulcanization.
Outside the rubber industry, 2-mercaptobenzothiazole (MBT) serves as an intermediate in the synthesis of specialty chemicals, pharmaceuticals, pesticides, corrosion inhibitors, flotation agents for mineral processing, lubricant additives, and metal surface treatment chemicals.

2-mercaptobenzothiazole (MBT) is also utilized in certain adhesive formulations, polymer stabilization systems, and industrial chemical processes involving sulfur-containing intermediates.
At work, you may find 2-mercaptobenzothiazole (MBT) in: Industrial and safety products made with natural rubber, butyl rubber, nitrile or neoprene – such as boots, shoes, adhesives, plugs, goggles, mats, headphones, masks, respirators, aprons, gloves, cords, tubing, insulation, and sheeting

Office products made with natural rubber, nitrile or neoprene – such as rubber bands, erasers, mats, and utility gloves
Health care equipment made with natural rubber, butyl rubber, nitrile or neoprene – such as medical and utility gloves, masks, bed sheeting, dental dams, anesthesia equipment, aprons, and tubing

Sports equipment made with natural rubber, butyl rubber, nitrile or neoprene – such as wetsuits, shoes, boots, masks, racquet, and club handles
At home, you may find 2-mercaptobenzothiazole (MBT) in: Household products made with natural rubber, butyl rubber, nitrile or neoprene – such as rubber bands, ear and headphones, masks, condoms and diaphragms, goggles, shoes, utility gloves, swimwear, toys, hoses, tubing, and elastic
Sports equipment made with natural rubber, butyl rubber, nitrile or neoprene – such as shoes, wetsuits, boots, masks, racquet, and club handles

Other uses of 2-mercaptobenzothiazole (MBT): Accelerator, Anticorrosive agents, Antifreeze, Balloons, Black tire paints.
Clothing uses of 2-mercaptobenzothiazole (MBT): Boots, Brassieres, Elastic and rubberized clothing, Girdles, Rubber clothing, Shoes, Support stockings, Swimwear and goggles.
2-mercaptobenzothiazole (MBT) is used in caulking, Condoms, Diaphragms, Dental dams, Dialysis equipment, Diaphragms, Earphones, Electrodes, Electrical cords, Erasers, Flea powders, Fungicides.

2-mercaptobenzothiazole (MBT) is used in garden hoses, Gloves (medical and household), Glue for leather and plastics, Household, work, or hospital gloves, Leather shoes and boots (insole, adhesives, and linings), Medical devices, Photographic film emulsion, Rubber bands.
2-mercaptobenzothiazole (MBT) is used in rubber handles on tools, Rubber eyelash curlers, Rubber in elasticized undergarments and clothing, Rubber pillows and sheets, Rubber shoes (sneakers, tennis shoes, etc.), Safety goggles, Sponge makeup applicators, Stethoscopes, Tick powder, Tires and tubes, Toys.

2-mercaptobenzothiazole (MBT) has been used in rubber manufacturing since 1920 as a vulcanization accelerator (semi-ultra-accelerator) and antioxidant .
Using 2-mercaptobenzothiazole (MBT), rubber vulcanizes with less sulfur and at milder temperatures, both factors give a stronger product.
This effect was reported by workers at Pirelli and at Goodyear Tire & Rubber.
Lorin B. Sebrell won the 1942 Charles Goodyear Medal for his work on mercaptobenzothiazole.

In polymerization, 2-mercaptobenzothiazole (MBT) finds use as a radical polymerization inhibitor, chain transfer agent, reforming agent, and additive for photoinitiators.
2-mercaptobenzothiazole (MBT) has also been used in the past in the gold-mining industry for the froth flotation of gold from ore residue as part of the extraction process.
Sodium salt is used as a biocide and preservative in adhesives (especially based on latex, starch, casein, and animal glues), paper, textiles.
Often found together with sodium dimethyldithiocarbamate as e.g. Vancide 51.

Zinc salt is used as a secondary accelerator in latex foam vulcanization.
2-mercaptobenzothiazole (MBT) can be added to oil-based hydraulic fluids, heat-transfer fluids (oils, antifreezes), cutting fluids and other mixtures as a corrosion inhibitor, effective for copper and copper alloys.
2-mercaptobenzothiazole (MBT) is also used in veterinary dermatology.

In electroplating, 2-mercaptobenzothiazole (MBT) is used as a brightener for copper sulfate baths, at about 50-100 milligrams/liter.
2-mercaptobenzothiazole (MBT) is also can be added to silver cyanide baths.
2-mercaptobenzothiazole (MBT) is often used alone or in combination with secondary accelerators such as thiurams, dithiocarbamates, sulfenamides, or guanidines to optimize cure rate and crosslink structure.

Besides its extensive use in rubber manufacturing, 2-mercaptobenzothiazole (MBT) also serves as an intermediate in the production of specialty chemicals, corrosion inhibitors, and certain industrial additives.
2-Mercaptobenzothiazole (MBT) is used primarily as a vulcanization accelerator in the production of rubber, although it is also used to inhibit the corrosion of copper in water and as an ingredient in cutting oils and petroleum products (Whittaker et al., 2004, De Wever et al., 1998).

The manufacture of 2-mercaptobenzothiazole (MBT) produces wastewaters with high levels of MBT and its derivatives, and these compounds can also be released into water by factories using MBT and by leaching from MBT-containing products, particularly rubber.
Many other industries also use benzothiazoles, which in some cases degrade to 2-mercaptobenzothiazole (MBT).
For example, 2-mercaptobenzothiazole (MBT) is a degradation product of a fungicide widely used in the leather and lumber industries, 2-(thiocyanomethylthio)benzothiazole.

WHAT IS MERCAPTOBENZOTHIAZOLE USED FOR?
For the Rubber Industry:
2-mercaptobenzothiazole (MBT) serves as a highly effective vulcanization accelerator in the manufacturing of tires, inner tubes, shoes, and various industrial rubber goods.

In Metal Analysis:
2-mercaptobenzothiazole (MBT) is used as a sensitive reagent for the detection and analysis of metals such as gold, bismuth, lead, and copper.

As a Corrosion Inhibitor:
2-Mercaptobenzothiazole (MBT) acts as an effective corrosion inhibitor specifically for copper and copper alloys in systems like cooling circuits.

In Chemical Synthesis:
2-mercaptobenzothiazole (MBT) functions as a key intermediate in the production of herbicides (e.g., mefenacet) and certain pharmaceuticals (e.g., cephalosporin antibiotics).

For Other Applications:
2-mercaptobenzothiazole (MBT) can also be used as a brightener in copper sulfate electroplating and as a solvent stabilizer in polyurethanes, resins, and paints.

KEY ASPECTS OF 2-MERCAPTOBENZOTHIAZOLE (MBT)
Structure and Properties:
2-mercaptobenzothiazole (MBT) is a pale yellow to tan crystalline powder with a characteristic odor.
2-mercaptobenzothiazole (MBT)'s a member of the benzothiazole family.

Production:
2-mercaptobenzothiazole (MBT) is typically produced by reacting aniline, carbon disulfide, and sulfur under high temperature and pressure.

Applications:
Rubber Vulcanization:
2-mercaptobenzothiazole (MBT) is a key ingredient in vulcanizing rubber, a process that improves its strength, durability, and resistance to heat and chemicals.

Corrosion Inhibitors:
2-mercaptobenzothiazole (MBT)'s used in oils, greases, and cooling fluids to prevent corrosion.

STRUCTURE OF 2-MERCAPTOBENZOTHIAZOLE (MBT):
The molecule is planar with a C=S double bond, so the name mercaptobenzothiazole is a misnomer, a more appropriate name could be benzothiazoline-2-thione.
Solution measurements by NMR spectroscopy could not measure the presence of the thiol tautomer that the name implies, instead it exists as a thione/dithiocarbamate and the hydrogen appears on the nitrogen in the solid state, gas-phase, and in solution.

Theory indicates that the thione tautomer is about 39 kJ/mol lower in energy than the thiol, and a hydrogen-bonded dimer of the thione has even lower energy.
At alkaline pH greater than 7 the deprotonated thiolate form is most abundant.
A protonated form could not be observed in the pH range 2-11.

REACTIONS OF 2-MERCAPTOBENZOTHIAZOLE (MBT):
2-Mercaptobenzothiazole (MBT) is insoluble in water but dissolves upon the addition of base, reflecting deprotonation.
Treatment with Raney nickel results in monodesulfurization, giving benzothiazole:

C6H4(NH)SC=S + Ni → C6H4(N)SCH + NiS
The benzo ring undergoes electrophilic aromatic substitution at the position para to nitrogen.

Oxidation gives mercaptobenzothiazole disulfide.
This disulfide reacts with amines to give sulfenamide derivatives such 2-morpholinodithiobenzothiazole.
These compounds are used in sulphur vulcanization, where they act as accelerators.

SYNTHESIS OF 2-MERCAPTOBENZOTHIAZOLE (MBT):
2-Mercaptobenzothiazole (MBT) has been produced by many methods.
The industrial route entails the high temperature reaction of aniline and carbon disulfide in the presence of sulfur, which proceeds by this idealized equation:
C6H5NH2 + CS2 + S → C6H4(NH)SC=S + H2S
The traditional route is the reaction of 2-aminothiophenol and carbon disulfide:

C6H4(NH2)SH + CS2 → C6H4(NH)SC=S + H2S
This method was developed by the discoverer of the compound, A. W. Hoffmann.
Other routes developed by Hoffmann include the reactions of carbon disulfide with 2-aminophenol and of sodium hydrosulfide with chlorobenzothiazole.
Further synthetic advances were reported in the 1920s that included demonstration that phenyldithiocarbamates pyrolyze to benzothiazole derivative.

PRODUCTION of 2-MERCAPTOBENZOTHIAZOLE (MBT):
The industrial synthesis of 2-mercaptobenzothiazole (MBT) uses aniline, sulfur, and carbon disulfide as starting materials.
These reagents are heated in an autoclave at pressures between 850 and 1100 psi (5.86 to 7.58 MPa) to 235–240 °C.

PREPARATION of 2-MERCAPTOBENZOTHIAZOLE (MBT):
2-mercaptobenzothiazole (MBT) is produced by reacting aniline, carbon disulfide, and sulfur at high temperature and pressure; the product is then purified by dissolution in a base to remove the dissolved organics.
Re-precipitation is achieved by the addition of acid.
Refined 2-mercaptobenzothiazole was produced by recrystallization from 2-mercaptobenzothiazole with industrial grade and oxidized to 2,2'-dithiobis(benzothiazole), using oxygen as an oxidant, nitric oxide as a oxygen carrier and alcohols as solvents, in a circulating fluidized reactor under one-step oxidation.

2,2'-Dithiobis(benzothiazole) was thus obtained with high purity up to 99 %, melting point at 183 oC, high yield over 98 %, through the optimization of reaction parameters as reaction time, temperature, reactants ratio, with less waste generation and emission during the production process.
Alcohol solvents can be reused after purification.

CHEMICAL PROPERTIES of 2-MERCAPTOBENZOTHIAZOLE (MBT):
2-mercaptobenzothiazole (MBT) is a pale yellow monoclinic needle-like or flaky crystals with a disagreeable odor.
2-mercaptobenzothiazole (MBT) is insoluble in water and gasoline, soluble in ethanol, ethyl ether, acetone, ethyl acetate, benzene, chloroform and dilute alkali solution.

CHARACTERISTICS of 2-MERCAPTOBENZOTHIAZOLE (MBT):
2-mercaptobenzothiazole (MBT) is considered a medium-fast primary accelerator that provides an excellent balance between curing speed and scorch safety.
Compared with ultra-fast accelerators such as dithiocarbamates and thiurams, 2-mercaptobenzothiazole (MBT) offers greater processing safety, reducing the likelihood of premature vulcanization during mixing and shaping operations.
This makes 2-mercaptobenzothiazole (MBT) particularly suitable for manufacturing complex molded rubber products.

One of the distinguishing characteristics of 2-mercaptobenzothiazole (MBT) is its broad compatibility with numerous sulfur-curable elastomers, including natural rubber (NR), styrene-butadiene rubber (SBR), butadiene rubber (BR), nitrile rubber (NBR), chloroprene rubber (CR), and other specialty elastomers.
2-mercaptobenzothiazole (MBT) also exhibits excellent synergy with secondary accelerators, allowing formulators to customize cure speed, crosslink density, and final mechanical properties.

2-mercaptobenzothiazole (MBT) is chemically stable during storage, has low volatility, and demonstrates good resistance to thermal degradation under normal processing conditions.
2-mercaptobenzothiazole (MBT)'s balanced curing characteristics contribute to the production of vulcanized rubber with excellent tensile strength, resilience, abrasion resistance, and fatigue performance.

BENEFITS of 2-MERCAPTOBENZOTHIAZOLE (MBT):
2-mercaptobenzothiazole (MBT) offers an excellent combination of curing efficiency, processing safety, and mechanical performance.
2-mercaptobenzothiazole (MBT) promotes uniform sulfur crosslink formation, resulting in vulcanized rubber with high tensile strength, tear resistance, elasticity, resilience, and abrasion resistance.
2-mercaptobenzothiazole (MBT)'s balanced cure characteristics help reduce manufacturing defects associated with premature vulcanization while maintaining efficient production cycles.

Another major benefit is 2-mercaptobenzothiazole (MBT)'s versatility across a wide range of rubber formulations and compatibility with numerous secondary accelerators.
This flexibility enables manufacturers to tailor curing behavior according to specific processing requirements and performance targets.
2-mercaptobenzothiazole (MBT) also contributes to improved heat resistance, fatigue resistance, and long-term aging stability of vulcanized rubber products.

Because of its relatively low volatility and good storage stability, 2-mercaptobenzothiazole (MBT) maintains consistent activity during long-term storage and industrial processing.
Its well-established industrial history, predictable curing behavior, and extensive technical documentation have made 2-mercaptobenzothiazole (MBT) one of the most trusted and widely used accelerators in rubber technology.

HISTORY of 2-MERCAPTOBENZOTHIAZOLE (MBT):
Benzothiazoles were long ago found to strongly influence the course of the vulcanization of rubber.
2-Mercaptobenzothiazole (MBT) is one of the oldest and most widely used sulfur vulcanization accelerators in the rubber industry.
2-mercaptobenzothiazole (MBT) belongs to the benzothiazole family of organosulfur compounds and serves as a medium-fast primary accelerator for the vulcanization of natural rubber and many synthetic elastomers.

Since its introduction in the early twentieth century, 2-mercaptobenzothiazole (MBT) has become a benchmark accelerator because it provides an excellent balance between curing speed, processing safety, and final mechanical performance.
2-mercaptobenzothiazole (MBT) is particularly effective in sulfur curing systems where high tensile strength, good elasticity, and reliable aging resistance are required.

WHERE I 2-MERCAPTOBENZOTHIAZOLE (MBT) FOUND?
You are most likely to contact mercaptobenzothiazole when using, wearing, or handling natural or synthetic rubber products at work or at home.
Work shoes and athletic shoes are often made with rubber components that contain mercaptobenzothiazole or related substances.
2-mercaptobenzothiazole (MBT) may be used as anti-corrosion agent in cooling oils, drilling and cutting oils, antifreeze, and fungicides.
2-mercaptobenzothiazole (MBT) is a thiazole rubber accelerator which are the most common accelerators used in the production of rubber.

Accelerators are agents used to speed up the vulcanization process of cross-linking polymer chains.
2-mercaptobenzothiazole (MBT) is the most commonly identified allergen in allergic contact dermatitis due to shoes in the United States and accounts for 15% to 45% of positive patch tests in patients tested in various series for shoe dermatitis.
2-mercaptobenzothiazole (MBT) is second to the thiurams as the etiologic agent in allergic contact dermatitis due to gloves.

PHYSICAL and CHEMICAL PROPERTIES of 2-MERCAPTOBENZOTHIAZOLE (MBT):
CAS Number: 149-30-4
EC Index Number: 613-108-00-3
EC Number: 205-736-8
Hill Formula: C₇H₅N S₂
Molar Mass: 167.25 g/mol
HS Code: 2934 20 20
Boiling Point: >260 °C decomposes
Density: 1.42 g/cm³ (20 °C)
Explosion Limit: 15 %(V)
Flash Point: 200 °C

Ignition Temperature: 465 °C
Melting Point: 177 - 181 °C
pH Value: 7 (0.12 g/l, H₂O, 25 °C)
Vapor Pressure: <0.000003 hPa (25 °C)
Bulk Density: 390 kg/m³
Solubility: 0.12 g/l
Molecular Formula: C7H5NS2
Molecular Weight: 167.25 g/mol
Appearance: Pale yellow powder or crystals
Density: ~1.5 g/cm³

Melting Point: 178–181 °C
Boiling Point: Decomposes before boiling
Solubility: Slightly soluble in water,
soluble in organic solvents like ethanol and acetone
Flash Point: Non-flammable
Molecular Weight: 167.3 g/mol
XLogP3: 2.4
Hydrogen Bond Donor Count: 1
Hydrogen Bond Acceptor Count: 2

Rotatable Bond Count: 0
Exact Mass: 166.98634151 Da
Monoisotopic Mass: 166.98634151 Da
Topological Polar Surface Area: 69.4 Å²
Heavy Atom Count: 10
Formal Charge: 0
Complexity: 158
Isotope Atom Count: 0
Defined Atom Stereocenter Count: 0
Undefined Atom Stereocenter Count: 0

Defined Bond Stereocenter Count: 0
Undefined Bond Stereocenter Count: 0
Covalently-Bonded Unit Count: 1
Compound Is Canonicalized: Yes
Appearance: grayish-white or light yellow powder
Active Content, %: 99.0 Min.
Melting Point, ℃: 171.0 Min.
Heating Loss, %: 0.40 Max.
Ash Content, %: 0.30 Max.

Residue (150um), %: 0.10 Max.
Chemical formula: C7H5NS2
Molar mass: 167.24 g·mol−1
Appearance: white solid
Melting point: 177–181 °C (351–358 °F; 450–454 K)
Molecular Weight: 167.3 g/mol
XLogP3: 2.4
Hydrogen Bond Donor Count: 1
Hydrogen Bond Acceptor Count: 2
Rotatable Bond Count: 0

Exact Mass: 166.98634151 g/mol
Monoisotopic Mass: 166.98634151 g/mol
Topological Polar Surface Area: 69.4Å²
Heavy Atom Count: 10
Formal Charge: 0
Complexity: 158
Isotope Atom Count: 0
Defined Atom Stereocenter Count: 0
Undefined Atom Stereocenter Count: 0
Defined Bond Stereocenter Count: 0

Undefined Bond Stereocenter Count: 0
Covalently-Bonded Unit Count: 1
Compound Is Canonicalized: Yes
Physical state: crystalline
Color: light yellow
Odor: pungent
Melting point/freezing point:
Melting point/range: 177 - 181 °C - lit.
Initial boiling point and boiling range: > 260 °C

Decomposes on heating.
Flammability (solid, gas): No data available
Upper/lower flammability or explosive limits:
Lower explosion limit: 15 %(V)
Flash point: 200 °C - closed cup - ISO 1523
Autoignition temperature: does not ignite
Decomposition temperature: No data available
pH: No data available
Viscosity
Viscosity, kinematic: No data available
Viscosity, dynamic: No data available

Water solubility: 0,118 g/l at 25 °C
Partition coefficient: n-octanol/water:
log Pow: 2,42 - Bioaccumulation is not expected.
Vapor pressure: No data available
Density: 1,42 g/cm3 at 20 °C
Relative density: No data available
Relative vapor density: No data available
Particle characteristics: No data available
Explosive properties: No data available
Oxidizing properties: none

Other safety information:
Dissociation constant: 7,03 at 20,5 °C
CAS number: 149-30-4
EC index number: 613-108-00-3
EC number: 205-736-8
Hill Formula: C₇H₅N S₂
Molar Mass: 167.25 g/mol
HS Code: 2934 20 20
Boiling point: >260 °C decomposes
Density: 1.42 g/cm3 (20 °C)

Explosion limit: 15 %(V)
Flash point: 200 °C
Ignition temperature: 465 °C
Melting Point: 177 - 181 °C
pH value: 7 (0.12 g/l, H₂O, 25 °C)
Vapor pressure: <0.000003 hPa (25 °C)
Bulk density: 390 kg/m3
Solubility: 0.12 g/l
Appearance: Light yellow or off-white powder or granule
Initial Melting Point（℃≥）: 170
Molecular Formula: C7H5NS2

Molecular Weight: 167.25
Melting Point: 185°F / 85°C
Boiling Point: N/A
Flash Point: 500°F / 260°C
Appearance: pale yellow to tan crystalline powder (est)
Assay: 95.00 to 100.00
Food Chemicals Codex Listed: No
Soluble in: water, 120 mg/L @ 24C (exp)
Melting Point: 172.0°C to 182.0°C
Color: Yellow
Flash Point: 243°C
Infrared Spectrum: Authentic

Beilstein: 27, II, 233
Merck Index: 15, 5935
Solubility Information: yellow solution
Formula Weight: 167.24
Percent Purity: 97%
Physical Form: Powder
Chemical Name or Material: 2-Mercaptobenzothiazole, 98%
Molecular Weight： 167.25100
Exact Mass： 167.25
EC Number： 205-736-8
HScode： 29342020

PSA： 79.93000
XLogP3： 2.58500
Appearance： 2-mercaptobenzothiazole is a pale yellow to
tan crystalline powder with a disagreeable odor.
Density： 1.42 g/cm3
Melting Point： 180.2-181.7 °C
Boiling Point： 305ºC at 760 mmHg
Flash Point： 243ºC (dec.)
Refractive Index： 1.783
Water Solubility： Solubility in water, g/100ml at 20°C: 0.01 (very poor)
Storage Conditions： Store in a tightly closed container.
Store in a cool, dry, well-ventilated area away from incompatible substances.

Vapor Pressure： 0.000844mmHg at 25°C
Explosive limit： vol% in air: 15
Odor： Disagreeable odor
Taste： Bitter taste
Molecular Weight:167.3
XLogP3:2.4
Hydrogen Bond Donor Count:1
Hydrogen Bond Acceptor Count:2
Exact Mass:166.98634151
Monoisotopic Mass:166.98634151
Topological Polar Surface Area:69.4

Heavy Atom Count:10
Complexity:158
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes
Appearance :Powder
Physical State :Solid
Storage :Store at room temperature
Melting Point :177-181° C (lit.)
Boiling Point :>260° C (dec.)
Density :1.42 g/cm3 at 20° C

Appearance: complying
Identity (IR): complying
Assay (alkalimetric): Min. 98 %
Melting point: 178 - 181 °C
Colour of the solution: complying
Clearness of the solution: complying
Boiling Point/Range: No data available
Color: Light Yellow
Density: 1.42 g/cm3 (20 °C)
Flashpoint: 200 °C
Form: Powder
Grade: Indicators

Incompatible Materials: Oxidizing agents
Lower Explosion Limit: No data available
Melting Point/Range: 180-182 °C
Partition Coefficient: 2.42.7
Purity Percentage: 99.00
Purity Details: >=99.00%
Solubility in Water: 0.118 g/l (25 °C)
Upper Explosion Limit: No data available
Vapor Pressure: No data available
Viscosity: No data available
pH-Value: No data available
Storage Temperature: Ambient

Appearance: Pale yellow to light yellow powder or crystalline solid.
Physical State: Solid.
Color: Pale yellow to yellow.
Odor: Slight characteristic sulfur-like odor.
Molecular Formula: C7H5NS2.
Molecular Weight: 167.25 g/mol.
Density: Approximately 1.42–1.45 g/cm³ at 20°C.
Melting Point: 177–181°C (with tautomeric transformation before melting).
Boiling Point: Not applicable; decomposes before boiling.

Flash Point: Approximately 243–305°C (reported values vary depending on test method).
Autoignition Temperature: Approximately 340–360°C.
Vapor Pressure: Extremely low (approximately 0.00002 Pa at 25°C).
Vapor Density: Not applicable due to negligible volatility.
Water Solubility: Very slightly soluble (approximately 100–150 mg/L at 25°C).
Solubility in Organic Solvents: Soluble in acetone, ethanol, benzene, chloroform, ethyl acetate, carbon disulfide, and dilute alkaline solutions.
Partition Coefficient (log Kow): Approximately 2.3–2.5.
pKa: Approximately 6.8–7.1.
pH: Weakly acidic in aqueous suspension.

Thermal Stability: Stable under recommended storage conditions.
Chemical Stability: Stable under normal industrial handling conditions.
Hygroscopicity: Low.
Explosive Properties: Not classified as explosive; dust may form combustible mixtures with air.
Oxidizing Properties: Not oxidizing.
Refractive Index: Not generally applicable for solid material.
Decomposition Products: Carbon monoxide, carbon dioxide, sulfur oxides (SOx), nitrogen oxides (NOx), hydrogen sulfide, and sulfur-containing organic compounds.
Reactivity: Reacts with strong oxidizing agents, strong acids, and strong alkalis.
Corrosivity: Non-corrosive under normal conditions.

FIRST AID MEASURES of 2-MERCAPTOBENZOTHIAZOLE (MBT):
-Description of first-aid measures:
*General advice:
Show this material safety data sheet to the doctor in attendance.
*If inhaled:
After inhalation:
Fresh air.
*In case of skin contact:
Take off immediately all contaminated clothing.
Rinse skin with water/ shower.
Consult a physician.
*In case of eye contact:
After eye contact:
Rinse out with plenty of water.
Remove contact lenses.
*If swallowed:
After swallowing:
Immediately make victim drink water (two glasses at most).
Consult a physician.
-Indication of any immediate medical attention and special treatment needed:
No data available

ACCIDENTAL RELEASE MEASURES of 2-MERCAPTOBENZOTHIAZOLE (MBT):
-Environmental precautions:
Do not let product enter drains.
-Methods and materials for containment and cleaning up:
Cover drains.
Collect, bind, and pump off spills.
Observe possible material restrictions.
Take up dry.
Dispose of properly.
Clean up affected area

FIRE FIGHTING MEASURES of 2-MERCAPTOBENZOTHIAZOLE (MBT):
-Extinguishing media:
*Suitable extinguishing media:
Water
Foam
Carbon dioxide (CO2)
Dry powder
*Unsuitable extinguishing media:
For this substance/mixture no limitations of extinguishing agents are given.
-Further information:
Suppress (knock down) gases/vapors/mists with a water spray jet.
Prevent fire extinguishing water from contaminating surface water or the ground water system.

EXPOSURE CONTROLS/PERSONAL PROTECTION of 2-MERCAPTOBENZOTHIAZOLE (MBT):
-Control parameters:
--Ingredients with workplace control parameters:
-Exposure controls:
--Personal protective equipment:
*Eye/face protection:
Use equipment for eye protection.
Safety glasses
*Skin protection:
Handle with gloves.
Wash and dry hands.
Full contact:
Material: Nitrile rubber
Minimum layer thickness: 0,11 mm
Break through time: 480 min
Splash contact:
Material: Nitrile rubber
Minimum layer thickness: 0,11 mm
Break through time: 480 min
*Body Protection:
protective clothing
*Respiratory protection:
Recommended Filter type: Filter type P2
-Control of environmental exposure:
Do not let product enter drains.

HANDLING and STORAGE of 2-MERCAPTOBENZOTHIAZOLE (MBT):
-Conditions for safe storage, including any incompatibilities:
*Storage conditions:
Tightly closed.
Dry.

STABILITY and REACTIVITY of 2-MERCAPTOBENZOTHIAZOLE (MBT):
-Chemical stability:
The product is chemically stable under standard ambient conditions (room temperature) .
-Incompatible materials:
No data available