PRODUCTS

2-MERCAPTOBENZOTHIAZOLE (MBT)

2-Mercaptobenzothiazole (MBT) is used in the following products: polymers and biocides (e.g. disinfectants, pest control products).
2-Mercaptobenzothiazole (MBT) has an industrial use resulting in manufacture of another substance (use of intermediates).
2-Mercaptobenzothiazole (MBT) is used in the following areas: formulation of mixtures and/or re-packaging.

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

SYNONYMS:
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 a pale yellow to tan crystalline powder with a disagreeable odor.
1,3-benzothiazole-2-thiol is 1,3-Benzothiazole substituted at the 2-position with a sulfanyl group.
2-Mercaptobenzothiazole (MBT) is a member of benzothiazoles and an aryl thiol.

2-Mercaptobenzothiazole (MBT) is an industrial chemical that is used principally in the manufacture of
rubber.
2-Mercaptobenzothiazole (MBT) is an organosulfur compound that has been shown to have a variety of biological and chemical properties.

2-Mercaptobenzothiazole (MBT) has been shown to possess potent antibacterial activity against both Gram-positive and Gram-negative bacteria.
2-Mercaptobenzothiazole (MBT) has also been shown to be effective in wastewater treatment as a coagulant, sequestering agent, and flocculant.
The optical sensor for 2-Mercaptobenzothiazole (MBT) is based on the Langmuir adsorption isotherm and the optimum concentration of MBT is around 1 mM.

2-Mercaptobenzothiazole (MBT) is registered under the REACH Regulation and is manufactured in and / or imported to the European Economic Area, at ≥ 1 000 to < 10 000 tonnes per annum.
2-Mercaptobenzothiazole (MBT) is an organosulfur compound with the formula C6H4(NH)SC=S.
A white solid, 2-Mercaptobenzothiazole (MBT) is used in the sulfur vulcanization of rubber.

USES and APPLICATIONS of 2-MERCAPTOBENZOTHIAZOLE (MBT):
Uses of 2-Mercaptobenzothiazole (MBT): Vulcanization accelerator in rubber manufacturing, Corrosion inhibitor in industrial applications, Additive in lubricating oils and greases, and Biocide in some formulations.
2-Mercaptobenzothiazole (MBT) chemical is used in the vulcanization of rubber.

Using 2-Mercaptobenzothiazole (MBT), rubber vulcanizes with less sulfur and at milder temperatures.
Both factors give a stronger product.
This effect was reported in 1921 by workers at Pirelli and Goodyear Tire & Rubber.

2-Mercaptobenzothiazole (MBT) is used as a cooling tower biocide.
2-Mercaptobenzothiazole (MBT) chemical has also been used in the gold-mining industry to “float” the gold from ore residue as part of the extraction process.

2-Mercaptobenzothiazole (MBT) is mainly used to manufacture rubber tires, rubber belts, rubber shoes, and other technical rubber goods.
In addition, 2-Mercaptobenzothiazole (MBT) is also used to prepare pesticide fungicides, nitrogenous fertilizer synergists, cutting oil and lubricating additives, photographic chemistry in the machine anti ash agent, metal corrosion inhibitors, etc.

2-Mercaptobenzothiazole (MBT) is also a reagent used in chemical analysis.
2-Mercaptobenzothiazole (MBT) is an effective copper or copper alloy corrosion inhibitor.

When the cooling system contains copper equipment and raw water contains a certain amount of copper ions, 2-Mercaptobenzothiazole (MBT) can be added to prevent copper corrosion.
2-Mercaptobenzothiazole (MBT) is also an intermediate of the herbicide benzothiachlor.

2-Mercaptobenzothiazole (MBT) is a fast and nonpolluting accelerator suitable for rubbers and latex.
2-Mercaptobenzothiazole (MBT)'s available as either as a light yellow powder or granule and can achieve good cold vulcanization when used together with secondary accelerator such as TMTD, TETD or DPG.

2-Mercaptobenzothiazole (MBT) can impart anti-aging properties to vulcanized rubbers and is mainly used in the manufacturing of tires, adhesive tapes, rubber overshoes and other rubber products.
2-Mercaptobenzothiazole (MBT) is a refined version of it with a slightly higher initial M.P. count of 172.0 minimum oC.

2-Mercaptobenzothiazole (MBT) is used by consumers, in articles, by professional workers (widespread uses), in formulation or re-packing, at industrial sites and in manufacturing.
2-Mercaptobenzothiazole (MBT) is a Hemi-ultra accelerator extensively used in the vulcanization of natural and synthetic rubbers.

Other release to the environment of 2-Mercaptobenzothiazole (MBT) is likely to occur from: outdoor use in long-life materials with low release rate (e.g. metal, wooden and plastic construction and building materials), outdoor use in long-life materials with high release rate (e.g. tyres, treated wooden products, treated textile and fabric, brake pads in trucks or cars, sanding of buildings (bridges, facades) or vehicles (ships)) and indoor use in long-life materials with low release rate (e.g. flooring, furniture, toys, construction materials, curtains, foot-wear, leather products, paper and cardboard products, electronic equipment).

Other release to the environment of 2-Mercaptobenzothiazole (MBT) is likely to occur from: indoor use in long-life materials with low release rate (e.g. flooring, furniture, toys, construction materials, curtains, foot-wear, leather products, paper and cardboard products, electronic equipment), outdoor use in long-life materials with low release rate (e.g. metal, wooden and plastic construction and building materials) and outdoor use in long-life materials with high release rate (e.g. tyres, treated wooden products, treated textile and fabric, brake pads in trucks or cars, sanding of buildings (bridges, facades) or vehicles (ships)).

2-Mercaptobenzothiazole (MBT) can be found in complex articles, with no release intended: vehicles, machinery, mechanical appliances and electrical/electronic products (e.g. computers, cameras, lamps, refrigerators, washing machines) and electrical batteries and accumulators.
2-Mercaptobenzothiazole (MBT) can be found in products with material based on: rubber (e.g. tyres, shoes, toys).

2-Mercaptobenzothiazole (MBT) is used in the following products: polymers.
2-Mercaptobenzothiazole (MBT) is used for the manufacture of: rubber products.

2-Mercaptobenzothiazole (MBT) is used in the following products: polymers.
Release to the environment of 2-Mercaptobenzothiazole (MBT) can occur from industrial use: formulation of mixtures, formulation in materials, in the production of articles, as processing aid and as processing aid.

2-Mercaptobenzothiazole (MBT) is used for the manufacture of: rubber products, plastic products, fabricated metal products and .
Release to the environment of 2-Mercaptobenzothiazole (MBT) can occur from industrial use: as an intermediate step in further manufacturing of another substance (use of intermediates), in the production of articles, as processing aid, as processing aid and formulation in materials.

Release to the environment of 2-Mercaptobenzothiazole (MBT) can occur from industrial use: manufacturing of the substance.
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 2-Mercaptobenzothiazole (MBT).
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) also can be added to silver cyanide baths

WHAT IS 2-MERCAPTOBENZOTHIAZOLE (MBT) AND WHERE IS 2-MERCAPTOBENZOTHIAZOLE (MBT) FOUND?
2-Mercaptobenzothiazole (MBT) is used as an additive to rubber products such as shoes, gloves, undergarments, swimwear, clothing, condoms, diaphragms, medical devices, toys, tires and tubes.

2-Mercaptobenzothiazole (MBT) is also used in cutting oils, antifreeze mixtures, greases, adhesives, photographic film emulsions, detergents, and in veterinary products such as tick and flea powders and sprays.
Further research may identify additional product or industrial usages of this chemical.

PROPERTIES OF 2-MERCAPTOBENZOTHIAZOLE (MBT):
*High thermal stability.
*Effective as a metal deactivator.
*Strong sulfur donor for vulcanization.
*Provides enhanced aging properties to rubber products.

BENEFITS OF 2-MERCAPTOBENZOTHIAZOLE (MBT):
*Improves mechanical strength and elasticity in rubber.
*Prolongs the lifespan of industrial equipment by preventing corrosion.
*Enhances performance and durability in various formulations.

PROPERTIES OF 2-MERCAPTOBENZOTHIAZOLE (MBT):
2-Mercaptobenzothiazole (MBT) is an organosulfur compound with the formula C6H4NSCSH.
The molecule consists of a benzene ring fused to a 2-Mercaptothiazole ring.

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

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.

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.

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.

PREPARATION OF 2-MERCAPTOBENZOTHIAZOLE (MBT):
There are several preparation methods for 2-Mercaptobenzothiazole (MBT). üBut mainly, the following three methods are used most in preparation and manufacturing.

1. Using aniline as raw material.
Aniline, carbon disulfide, and sulfur are added to the high-pressure autoclave for direct reaction.
And it also can use fatty amine, dimethylformamide, trithiazolidine, and poly tetrafluoro formaldehyde instead of carbon disulfide.

To make aniline and sulfur react under high pressure.
With aniline as raw material, the reaction pressure is generally 4 MPa to 15 MPa.
So it is also called the high-pressure method.

2. Using o-Nitrochlorobenzene as raw material.
O-nitro chlorobenzene can be reduced to o-thiophenol by reacting with reducing agents sodium hydrogen sulfide, sodium polysulfide, or hydrogen sulfide.
Further reaction with carbon disulfide to produce 2-Mercaptobenzothiazole (MBT).

This method sometimes takes a longer reaction time (about 20 hours for sodium hydrosulfide).
Still, all can be carried out at atmospheric or lower pressure, known as the atmospheric pressure method.

3. Using diphenylthiourea as raw material.
The reaction pressure of this method is between the two previous methods.
The pressure is below 4MPa.

Also known as the medium pressure method.
The preparation method uses o-chloronitrobenzene, sodium polysulfide, and carbon disulfide as raw materials.

At 110~130℃ temperature and 343kPa pressure, the reaction produces 2-Mercaptobenzothiazole (MBT) sodium salt.
Then the product is obtained by acidification and water washing with sulfuric acid.

It can also be reacted with aniline, carbon disulfide, and sulfur at about 200℃.
Then at 7.85 MPa pressure and 250~260℃ holding for 2.5 hours.

That is 2-Mercaptobenzothiazole (MBT).
Dissolve with sodium hydroxide to sodium salt.

Then adjust the pH value to pH=9 and filter.
The filtrate is then acidified and neutralized at 38-40°C, washed, and dried to obtain the 2-Mercaptobenzothiazole (MBT).

Add aniline, carbon disulfide, and sulfur yellow to the condensation kettle.
The feeding ratio is (mol) 1: 0.96: 0.36.

The condensation reaction is finished after two hours at 8.1MPa and heated to 260℃.
The crude product of 2-Mercaptobenzothiazole (MBT) was obtained.

Cool down and transfer it to the neutralization kettle.
Add an alkali solution to neutralize, filter, and discard impurities.

The filtrate is transferred to the acidification kettle, acidified with sulfuric acid to pH 6~7, and filtered.
The filter cake is washed twice with water, dried, crushed, and packed by sieving to get the finished 2-Mercaptobenzothiazole (MBT).

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

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