2-Mercaptobenzimidazole

Modify Date: 2026-07-01 08:17:25

2-Mercaptobenzimidazole Structure
2-Mercaptobenzimidazole structure
 Common Name 2-Mercaptobenzimidazole
CAS Number 583-39-1 Molecular Weight 150.201
Density 1.4±0.1 g/cm3 Boiling Point 332.1±25.0 °C at 760 mmHg
Molecular Formula C7H6N2S Melting Point 300-304 °C(lit.)
MSDS Chinese USA Flash Point 154.7±23.2 °C
Symbol GHS06
GHS06		 Signal Word Danger

Summary: 2-Mercaptobenzimidazole, also known as 2-mercaptobenzimidazole, has a CAS number of 583-39-1, with a molecular formula of C7H6N2S and a molecular weight of 150.201. It appears as yellow or white crystals with a melting point of 300-304 °C.主要用于橡胶工业中的防老剂。For research-use only, not for medical or clinical usage.

 Names

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name 2-Mercaptobenzimidazole
Synonym More Synonyms

 Chemical & Physical Properties

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Density 1.4±0.1 g/cm3
Boiling Point 332.1±25.0 °C at 760 mmHg
Melting Point 300-304 °C(lit.)
Molecular Formula C7H6N2S
Molecular Weight 150.201
Flash Point 154.7±23.2 °C
Exact Mass 150.025162
PSA 67.48000
LogP 2.48
Vapour Pressure 0.0±0.7 mmHg at 25°C
Index of Refraction 1.771
InChIKey YHMYGUUIMTVXNW-UHFFFAOYSA-N
SMILES S=c1[nH]c2ccccc2[nH]1
Stability Stable. Incompatible with strong oxidizing agents.
Water Solubility <0.1 g/100 mL at 23.5 ºC

 MSDS

This table provides MSDS information including hazard classification, first‑aid, fire‑fighting, spill handling, operation and storage instructions.

 Toxicological Information

This table summarizes toxicological test data, acute & chronic toxicity and ecological hazard parameters for this chemical.

CHEMICAL IDENTIFICATION

RTECS NUMBER :
DE1050000
CHEMICAL NAME :
2-Benzimidazolethiol
CAS REGISTRY NUMBER :
583-39-1
LAST UPDATED :
199701
DATA ITEMS CITED :
12
MOLECULAR FORMULA :
C7-H6-N2-S
MOLECULAR WEIGHT :
150.21
WISWESSER LINE NOTATION :
T56 BM DNJ CSH

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
REFERENCE :
85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,990,1986
TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration into the eye
SPECIES OBSERVED :
Rodent - rabbit
REFERENCE :
85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,990,1986 ** ACUTE TOXICITY DATA **
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
750 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
FRZKAP Farmatsevtichnii Zhurnal (Kiev). (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.3- 1930- Volume(issue)/page/year: 17(1),36,1962
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
200 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
NTIS** National Technical Information Service. (Springfield, VA 22161) Formerly U.S. Clearinghouse for Scientific & Technical Information. Volume(issue)/page/year: AD277-689
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
180 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
CSLNX* U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) Volume(issue)/page/year: NX#04376 ** OTHER MULTIPLE DOSE TOXICITY DATA **
TYPE OF TEST :
TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
6200 ug/m3/6H/13W-I
TOXIC EFFECTS :
Endocrine - changes in thymus weight Endocrine - changes in thyroid weight Blood - changes in erythrocyte (RBC) count
REFERENCE :
FAATDF Fundamental and Applied Toxicology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1981- Volume(issue)/page/year: 16,161,1991
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
1820 mg/kg/17W-I
TOXIC EFFECTS :
Blood - changes in serum composition (e.g. TP, bilirubin, cholesterol)
REFERENCE :
GTPZAB Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1-36, 1957-1992. For publisher information, see MTPEEI Volume(issue)/page/year: 8(7),39,1964 ** REPRODUCTIVE DATA **
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
660 mg/kg
SEX/DURATION :
female 7-17 day(s) after conception
TOXIC EFFECTS :
Reproductive - Maternal Effects - other effects
REFERENCE :
FAATDF Fundamental and Applied Toxicology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1981- Volume(issue)/page/year: 25,218,1995
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
110 mg/kg
SEX/DURATION :
female 7-17 day(s) after conception
TOXIC EFFECTS :
Reproductive - Maternal Effects - other effects Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus) Reproductive - Specific Developmental Abnormalities - musculoskeletal system
REFERENCE :
FAATDF Fundamental and Applied Toxicology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1981- Volume(issue)/page/year: 25,218,1995
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
330 mg/kg
SEX/DURATION :
female 7-17 day(s) after conception
TOXIC EFFECTS :
Reproductive - Specific Developmental Abnormalities - craniofacial (including nose and tongue) Reproductive - Specific Developmental Abnormalities - urogenital system
REFERENCE :
FAATDF Fundamental and Applied Toxicology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1981- Volume(issue)/page/year: 25,218,1995 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X2477 No. of Facilities: 43 (estimated) No. of Industries: 3 No. of Occupations: 5 No. of Employees: 304 (estimated) No. of Female Employees: 67 (estimated)

 Safety Information

This table covers safety warnings, protective measures, incompatible substances and disposal guidelines for this compound.

Symbol GHS06
GHS06
Signal Word Danger
Hazard Statements H301-H312 + H332-H315-H319-H335
Precautionary Statements P261-P280-P301 + P310-P305 + P351 + P338
Hazard Codes Xn:Harmful
Risk Phrases R22
Safety Phrases S26-S36-S24/25
RIDADR UN 2811 6.1/PG 3
WGK Germany 2
RTECS DE1050000
Packaging Group III
Hazard Class 6.1
HS Code 2933990090

 Synthetic Route

This table presents publicly reported synthetic routes, reaction conditions, reactants and product information of the compound.

 Customs

This table shows customs‑related data including HS‑code, tariff and regulatory conditions for import and export.

HS Code 2933990090
Summary 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Articles1

More Articles

This table lists relevant public references with title, journal and publication metadata for this compound.

Molecular interaction mechanism between 2-mercaptobenzimidazole and copper-zinc superoxide dismutase.

PLoS ONE 9(8) , e106003, (2014)

2-Mercaptobenzimidazole (MBI) is widely utilized as a corrosion inhibitor, copper-plating brightener and rubber accelerator. The residue of MBI in the environment is potentially harmful. In the presen...

 Synonyms

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

2-Mercaptobenzimidazole
2,3-dihydro-1H-benzimidazole-2-thione
benzimidazole-2-thiol
2,3-dihydro-2-benzimidazolethione
EINECS 209-502-6
2-Benzimidazolethiol
Vulkanox
Antigen MB
Nocrac MB
MFCD00466107
1,3-Dihydro-2H-benzimidazole-2-thione
1H-Benzimidazole-2-thiol
USAF xf-21
asmmb
AOMB
2-Mercapto Benzimidazole
Lansoprazole Impurity 5

 2-Mercaptobenzimidazole | FAQ

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What is the molecular weight of 2-Mercaptobenzimidazole?
A: Molecular weight of 2-Mercaptobenzimidazole is 150.201.
Q: What is the SMILES notation of 2-Mercaptobenzimidazole?
A: SMILES notation of 2-Mercaptobenzimidazole is S=c1[nH]c2ccccc2[nH]1.
Q: What is the LogP of 2-Mercaptobenzimidazole?
A: LogP of 2-Mercaptobenzimidazole is 2.48.
Q: What English synonyms does 2-Mercaptobenzimidazole have?
A: English synonyms of 2-Mercaptobenzimidazole: 2-Mercaptobenzimidazole, 2,3-dihydro-1H-benzimidazole-2-thione, benzimidazole-2-thiol, 2,3-dihydro-2-benzimidazolethione, EINECS 209-502-6, 2-Benzimidazolethiol, Vulkanox, Antigen MB, Nocrac MB, MFCD00466107, 1,3-Dihydro-2H-benzimidazole-2-thione, 1H-Benzimidazole-2-thiol, USAF xf-21, asmmb, AOMB, 2-Mercapto Benzimidazole, Lansoprazole Impurity 5.
Q: How is the water solubility of 2-Mercaptobenzimidazole?
A: Water solubility of 2-Mercaptobenzimidazole: <0.1 g/100 mL at 23.5 ºC.
Q: What are the downstream products of 2-Mercaptobenzimidazole?
A: Related downstream products(CAS) of 2-Mercaptobenzimidazole: 40828-54-4;51-17-2;54624-57-6;1456-19-5;19951-24-7;21224-37-3;19919-16-5;21541-32-2;615-16-7;1155-37-9.
Q: What is the English name of 2-Mercaptobenzimidazole?
A: The English name of 2-Mercaptobenzimidazole is 2-Mercaptobenzimidazole.
Q: What is the polar surface area (PSA) of 2-Mercaptobenzimidazole?
A: Polar surface area (PSA) of 2-Mercaptobenzimidazole is 67.48000.
Q: What are the upstream materials of 2-Mercaptobenzimidazole?
A: Related upstream materials(CAS) of 2-Mercaptobenzimidazole: 75-15-0;95-54-5;534-18-9;56-23-5;103-72-0;71105-17-4;103742-55-8;102-08-9.
Q: What is the CAS number of 2-Mercaptobenzimidazole?
A: CAS number of 2-Mercaptobenzimidazole is 583-39-1.

 2-Mercaptobenzimidazolefactory

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Shanghai Nianxing Industrial Co., Ltd
Dayang Chem (Hangzhou) Co., Ltd.
Henan Tianfu Chemical Co., Ltd.
Zhongshan Xingrui Chemical Co. , Ltd.
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Chemsrc provides 2-Mercaptobenzimidazole(CAS#:583-39-1) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of 2-Mercaptobenzimidazole are included as well.>> amp version: 2-Mercaptobenzimidazole

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