CAS Search
Related Chemical Product
Buy Chemical NO: 120-78-5
  • Urgent Purchase CAS NO.:120-78-5
  • Please post your buying leads! Our suppliers will contact you later!
  • For suppliers to better understand your request, enter more info here.

* Product Name:
CAS No.:
* Quantity:
 Metric Ton     Kilogram    Gram    Pound
* Valid For:
 5 Days    15    1 Month    3 Month    6 Month    1 Year
* Description:

Max 2000 characters.  Please enter detailed description for the product.
* Email:

Accelerator (DM) ( CASNO:120-78-5 )

Identification and Related Records
Accelerator (DM)
CAS Registry number:
2,2'-Dibenzothiazole disulfide
Accelerator MBTS
Dibenzothiazole Disulfide
2,2-D ibenzothiazole Disulfide
2-Mercaptobenzothiazole disulfide
2-Mercaptobenzothiazyl disulfide
Accel TM
Benzothiazol-2-yl disulfide
Benzothiazole disulfide
Benzothiazole, 2,2'-dithiobis-
Molecular Formula:
Molecular Weight:
Canonical SMILES:
Chemical and Physical Properties
yellow amorphous powder
Melting Point:
Boiling Point:
532.5 °C at 760 mmHg
0mmHg at 25°C
Refractive Index:
Flash Point:
<0.01 g/100 mL at 21 ºC
<0.01 g/100 mL at 21 oC in water
Cream to off-white powder or pellets
Stable under normal temperatures and pressures.
HS Code:
Storage temp:
Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed.
Spectral properties:
IR: 1374 (Coblentz Society Spectral Collection)
UV: 1-544 (Organic Electronic Spectral Data, Phillips et al, John Wiley & Sons, New York)
Computed Properties:
Molecular Weight:332.48672 [g/mol]
Molecular Formula:C14H8N2S4
H-Bond Donor:0
H-Bond Acceptor:4
Rotatable Bond Count:3
Exact Mass:331.957031
MonoIsotopic Mass:331.957031
Topological Polar Surface Area:133
Heavy Atom Count:20
Formal Charge:0
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
Feature 3D Acceptor Count:2
Feature 3D Ring Count:4
Effective Rotor Count:3
Conformer Sampling RMSD:0.6
CID Conformer Count:109
Safety and Handling
Hazard Codes:
Risk Statements:
Safety Statements:
Poison by intravenous and intraperitoneal routes. Slightly toxic by ingestion. Experimental teratogenic and reproductive effects. Questionable carcinogen with experimental tumorigenic data. Mutation data reported. When heated to decomposition it emits very toxic fumes of SOx and NOx. See also SULFIDES.
Hazard Codes:?IrritantXi,DangerousN
Risk Statements: 31-43-50/53
R31 :Contact with acids liberates toxic gas.?
R43:May cause sensitization by skin contact.?
R50/53:Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Statements:?36/37-60-61
S36/37:Wear suitable protective clothing and gloves.?
S60:This material and its container must be disposed of as hazardous waste.?
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.
RIDADR: UN 3077 9/PG 3
WGK Germany: 2
UN 3077
?2,2'-Dithiobis(benzothiazole) , with CAS number of 120-78-5, can be called 1,2-Bis(2-benzothiazolyl)disulfide ; 2,2'-Benzothiazolyl disulfide ; 2,2'-Benzothiazyl disulfide ; 2,2'-Dibenzothiazole disulfide ; 2,2'-Dibenzothiazolyl disulfide ; 2,2'-Dithiobis ; 2-Benzothiazolyl disulfide ; 2-Mercaptobenzothiazole disulfide ; Bis(2-benzothiazolyl) disulfide ; Bis(benzothiazol-2-yl)disulfide ; Dibenzothiophene disulfide . It is a yellow amorphous powder.? 2,2'-Dithiobis(benzothiazole) (CAS NO.120-78-5) is used as universal promoting agents like the natural rubber, synthetic rubber, reclaimed rubber. 2,2'-Dithiobis(benzothiazole) (CAS NO.120-78-5) is mainly used in the manufacture of tires, tire tube, rubber belt, rubber overshoes and general industrial products. High purity Benzothiazole disulfide (pharmaceutical grade) is the important manufacturing cephalosporin antiphlogistics pharmaceutical intermediates.
Reported in EPA TSCA Inventory.
Disposal Methods:
SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.
Use and Manufacturing
Use and Manufacturing:
Methods of Manufacturing

U.S. Exports

(1972) 9.08X10+8 GRAMS (EST)
(1975) ND
U.S. Imports

(1975) ND
U.S. Production

(1972) 9.66X10+9 GRAMS
(1975) 7.43X10+9 GRAMS
(1991) 4,419,000 kg
Consumption Patterns

Accelerator for natural rubber, styrene-butadiene rubber, nitrile-butadiene rubber, butadiene rubber & for synthetic isoprene rubber.
Biomedical Effects and Toxicity
Biomedical Effects and Toxicity:
To determine the metabolic disposition of (l4)C-2-mercaptobenzothiazole (MBT) and (14)C-2-mercaptobenzothiazole disulfide (MBTS) male and female rats were dosed topically. Topical doses were 36.1 ug/animal for (14)C-MBT and 33.6 ug/animal for (14)C-MBTS. Although more MBT passed through the skin than MBTS and although relative to rats, guinea pigs absorbed a greater percentage of the dose (33.4% compared to 16.1-17.5% of the MBT and 12.2% compared to 5.94-7.87% for MBTS) the disposition of radioactivity derived from the two compounds was similar. Washing of the skin removed more of the radioactivity from guinea pigs than from rats. For both sexes of rats dosed iv with (14)C-MBT 0.602 mg/kg) or (14)C-MBTS 0.571 mg/kg) disposition of the compounds was similar. In 72 hr, 90.9-101% of the dose appeared in the urine and 3.79-15.1% in the feces. At this time a small portion of the administered radioactivity (1.52-1.96% of the dose) remained associated with erythrocytes. Oral dosing of rats for 14 days with unlabeled MBT (0.510 mg/kg/day) prior to a single dose of (14)C-MBT (0.503 mg/kg) or with unlabeled MBTS (0.521 mg/kg/day) prior to a single dose of (14)C-MBTS (0.730 mg/kg). For both sexes disposition of the compounds was similar. At 96 hr after dosing a small portion of the administered radioactivity (1.20-1.69% of the dose) remained associated with erythrocytes most of which was bound to the membranes. For both compounds and sexes 60.8-101% of the radioactivity administered appeared in the urine and 3.46-9.99% in the feces in 96 hr. At the time only trace amounts of radioactivity remained in tissues other than blood. Of these tissues thyroid contained the highest concentration. In the urine there was a detectable MBT or MBTS but there were two metabolites one of which was identified as a thioglucuronide derivative of MBT. The other was possibly a sulfonic acid derivative of MBT. In conclusion there were similarities in absorption, distribution, and metabolism of (14)C-MBT and (14)C-MBTS in rats and in guinea pigs, indicating that (14)C-MBTS was readily converted to (14)C-MBT. [ el Dareer SM et al; J Toxicol Environ Health 27 (1): 65-84 (1989)] PubMed Abstract
Environmental Fate and Exposure Potential
Environmental Fate/Exposure Summary:
TERRESTRIAL FATE: When released to soil, 2,2'-dibenzothiazyl disulfide will be categorized as immobile(3) based on estimated Koc values ranging from 10,960 to 755,000 (1,2). The rate of biodegradation in soil is probably slow (0.8% theoretical BOD in 2 weeks in an aqueous screening test using soil inoculum)(4).
AQUATIC FATE: Volatilization of 2,2'-dibenzothiazyl disulfide from water will not be an important fate process based on an estimated Henry's Law Constant of 2.34X10-13(1,2). Insufficient data are available to predict the relative importance or rate of biodegradation in aquatic conditions although one aqueous screening biodegradation test would suggest slow biodegradation(SRC). Aquatic bioconcentration factors of 1.0-7.2 and 1.4-51 for concentrations of 0.2 mg/l and 0.02 mg/l, respectively, were measured for carp(3). Since 2,2'-dibenzothiazyl disulfide absorbs light >290 nm(4), it has the potential to photolyze, alhtough the kinetics of the potential photlysis are not known(SRC). It is possible that 2,2'-dibenzothiazyl disulfide will adsorb to sediment or particulate material in an aquatic system based on its estimated Koc(SRC).
ATMOSPHERIC FATE: If released to the atmosphere, 2,2'- dibenzothiazyl disulfide will degrade in the ambient atmosphere by reaction with photochemically produced hydroxyl radicals with an estimated half-life of 1.3 hrs(1).
Chemical Company
Zhengzhou Golden Horse children´s play equipment factory (pirate ship):
Shenzhen Geno Enterprise Co.,LIMITED:
SHENZHEN GENO ENTERPRISE CO.,LIMITED is a professional supplier of sports products specializing in swimming goggles,Website:, swimming caps, Diving gears, swimming gearsand accessories. We manufacturers turn out up to 300,000 units a month and all of our materials are made of eco-friendly materials complying with European standards. Our total control over order procurement and quality assurance system will make sure our customers receive top quality products and prompt delivery. 
Huzhou District Tianshun Chemical Factory:
profile: Huzhou District Tianshun Chemical Factory manufactures dicyclopentadiene. Our items are cyolopentadiene climer dicyclopentadiene, thickener KT-301 and self mix-connecting adhesive T. Our cyolopentadiene climerdicyclopentadiene can be used to fabricate various chemicals utilized in producing pharmaceutical intermediates, resins and Pesticide sprays. Our thickener KT-301 can be used in printing crafts for example round internet, Flat internet, Machine Print, squirting and manual printing. 
Hebei Xinna Import and Export Limited Company:
Heibei Xinna Import And Export Trade Limited Company is really a quality approval enterprise, committed in offering inorganic/organic chemicals, pigments and dyestuffs in China. It is based on Shijiazhuang, Hebei province of China. With benefits of possessing our massive capital-possessed industrial facilities, we attribute our success to the long lasting efforts to provide quality and cost-effective chemicals to the clients. At the moment,all of our items are created by our capital-possessed industrial facilities,that are well outfitted using the top class quality systems,modernized warehouses and professional transport teams.Meantime,based on our close cooperation along with other major producers of chemicals in the united states,we source for his or her items,making us meet our cli 
Nutricorn Co., Ltd:
Nutricorn, the exportation market leader in agriculture feed chemicals, concentrating on Chinese lysine and threonine exporation for 8 years. The sourcing and selling of recycleables and chemicals for animal feeds is our profession.  Founded in 2004, With roughly 18 employees at our headquarters in Shandong and branches in additional than 12 nations, greater than 25 agent staff members worldwide employed by Nutricorn to supply our clients with support and advice. We're a famous, skilled and very flexible team, Our goal will be a dependable and competitive partner to companies within the segments from the market we serve. WE SERVE and support our clients with quickly growth.  Nutricorn continues to be produced to devote and expand the farming feed chemicals busines 
Wenzhou yono imp & exp co.,ltd:
WELCOME TO YONO WHO ARE WE? We are a lighting specialist located in Yueqing city. One score years ago,Website:,our leaders build our factory and start to produce bulkhead light and flood light, we have been supplying Russia,Dubai,Ukraine,America,Algeria,Venezuela,The Public of Balarus,Turkey,Poland,The Republic of Kazakhstan,as led technical developed,we begin to turn to led based on the traditional light,Yono means keep our promise forever in Chinese, and we continue to do so to this day. We focus and insist on a simple purpose: good quality products and speedy service, backed up by friendly customer service and a comprehensive guarantee. WHAT DO WE SELL? Here at you will find a huge range of top-notch lights and other LED-related products, led bulkhead 
Yingxuan Chempharm Co.,Ltd:
Shenzhen Light Feel Optoelectronics Co,Website:, Ltd, a company who is located in South East China - Shiyan Town, Shenzhen City. We are focus on various LED lighting products: outdoor , indoor, decorative LED lighting products. Including: Researching, Producing and Selling directly. Our company was established in 2008, and our facility was located in Lehuahang Industrial Park, which is is Shiyan, Shenzhen. With over 2600sqm of modern workshops and offices. There are about 50 employees. Which including 5 experienced engineers. Talent, innovation and service are our biggest advantages.  
Hubei Biocause Pharmaceutical CO.,LTD.:
shenzhen sailingchemical co.,ltd:
Established in 2006 ,SaiLing Chemical Co.,Ltd is really a fine organics factory which situated in Hangzhou,P.r.China. We produce an array of organics, especially fluorine, boronic chemicals, proteins, unnatural proteins, peptide, mix linkers, organocatalysts, chiral foundations, heterocyclic compounds and other active pharmaceutical components compounds. We're licensed towards the ISO 9001:2000 standards, possess a safety management system in position, and follow the responsible care programme. SaiLingchem has built a worldwide network of 1000's of clients from many research centers, Pharmaceutical companys and chemical factorys in the united states,Europe,Japan...  
dGreatsteroid Co.,Ltd:
Hangzhou Ruijiang Chemical Co. Ltd.:
Hangzhou Ruijiang Chemical Co.,LTD.started in 1992.After two decades of efforts, we have become one of the most important manufactures and exporters of silicone chemicals in China           We have greater than 300 employees,including 10 foreign employees and 20 specialists.We have our very own lab and cooperative institute like College and SGS.    
Heilongjiang Hongri Trading Co., Ltd.:
Shandong Basifu Chemical
Our organization began at the begining of 1996,focused on the development and purchase of chemical items, mainly used as industrial production raw materials ,production aids and also utilized in industries of pesticide sprays, dyes, tanning, burning support chemicals, feed chemicals and so on . With lots of years' developing, We've won the trust and recognition of domestic and foreign customer. 
Sichuan Zhongbang Technical Development Co., Ltd.:
      LUZHOU DAZHOU CHEMICAL CO.,LTD.and LUZHOU FUBANG CHEMICAL CO.,LTD. are subsidiaries of SICHUAN ZHONGBANGTECHNICAL DEVELOPING LIMITED COMPANY. Heis focusing within the research,development,manufacturing and trade of proper chemicals,pesticide intermediates and pharmaceutical intermediates the primary items include 2,5-dimethyl-2,5-hexanediol 2,5-Dimethyl-3-Hezyne-2,5-Diol 2,5-dimethyl-2, 4-hexanediene。Dicyclopentadiene Tetrahydrodicyclopentadiene Adamantane and Adamantane derivative items.  Equipped with 28500 T/A of hexanediol 500 T/A of two,5-Dimethyl-3-Hezyne-2, 5-Diol; 1000 T/A of Dicyclopentadiene and 1800 T/A of Adamantane production lines,we currently would be the biggest 
Aquatech Industry Co., Limited:
  Aquatech Industry Co., Limited , situated in Zhengzhou Town of Henan Province, mainly involved in import and export of several types of chemicals. Undoubtedly our items have released to Southeast Asia, Russia, Chile, Iran along with other nations and regions.  Aquatech is dedicated to supply high-quality water treatment chemicals for programs in a number of marketplaces. We now have water treatment chemical agents more than one hundred types. Our items include scale inhibitors, corrosion inhibitors, biocide agents, cleaners, pre-filming agent, chelating agents, scattering agents and the like.They've been utilized in industrial water treatment for example cooling towers, geothermal power power plants, central heating boiler 
Zibo Luzhong Chemical & Light Industry Co., Ltd:
Taizhou Shengyu Chemical Co.,Ltd:
Zhenjiang SWT Metal Product Co., Ltd.:
Henjiang SWT Metal Products is a Company with over 10years experience in designing and building Trailers for Worldwide Marketplaces. Currently we supply Metal Trailers (Hot Dipped Galvanised and or Enamel colored) for USA and Oceania locations. We take great pride in our capability to meet design needs and specifications in our clients on time using the greatest build standards guaranteed.Our mainly items: box trailers, cage trailers, Single Axle Trailers, Tandem Trailers (Disc Brakes or Electric Brakes), Off-road Trailers, Camper Trailers, Car Trailers (Disc Brakes or Electric Brakes), Plant Trailers, Bike Trailers, Slanting Trailers, Tippling Trailers (Disc Brakes or Electric Brakes), ATV trailers, Utility Trailers, Plumber Trailers, and all Trailers Parts. Our Company is located on the 
Zhejiang Jihua Group Co.,Ltd.:
The group’s base locates around the riverside from the famous Qiantang River, and is next to the Hangzhou Xiaoshan Worldwide Airport terminal, and is also near the Hu-Hang-Yong Express Highway and the idea-Jin-Qu Express Highway. The audience company is the owner of total assets a couple of.5 billion RMB yuan, and has staff greater than 2500. The group’s annual sales have to do with 3 billion RMB yuan, and it makes 100 million $ $ $ $ from exportation. Primary industries are: items: dyestuff, dye intermediate, fresh paint, ETC. basic materials (industry): sulfuric acidity, thermoelectricity, ETC., and other industries as Chemical Auxiliary, health care industry and finance and insurance industry. The audience is among the Chinese top 500 private businesses, and among the global primary dye