Molekula
2-Mercaptobenzimidazole
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
2-Mercaptobenzimidazole is an organic sulfur compound primarily used as a corrosion inhibitor, antioxidant (antidegradant) in rubber processing, and a key intermediate in pharmaceutical and agrochemical synthesis. It is also employed as a stabilizer in plastics and metalworking fluids. This solid chemical has a CAS number of 583-39-1, with the molecular formula C7H6N2S and a molecular weight of 150.20 g/mol. Store at ambient conditions. It carries a Danger signal word due to its hazardous properties. Molekula supplies 2-Mercaptobenzimidazole from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
In stock — same-day dispatch
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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100 g — £23.30 per pack ex VAT · £27.96 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | off-white or light yellow powder |
| Melting Point | >285 Deg C |
| Ash | <0.5% |
| Identification | Conforms to reference |
| Heating loss | <0.5% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 6.1 |
| Packing Group | II |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Vapour Pressure | 0.00000466 mmHg |
Source: PubChem CID 707035 (Haz-Map)
Identification
| Property | Value |
|---|---|
| SKU | 30892131 |
| CAS Number | 583-39-1 |
| IUPAC Name | 1,3-dihydrobenzimidazole-2-thione |
| EC Number | 209-502-6 |
| Molecular Formula | C7H6N2S |
| Molecular Weight | 150.20 |
| Exact Mass | 150.0252 |
| SMILES | C1=CC=C2C(=C1)NC(=S)N2 |
| InChIKey | YHMYGUUIMTVXNW-UHFFFAOYSA-N |
| InChI | InChI=1S/C7H6N2S/c10-7-8-5-3-1-2-4-6(5)9-7/h1-4H,(H2,8,9,10) |
| PubChem CID | 707035 |
| UN Number | UN2811 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2933.99.8290 |
| Tariff Code | 2933998090 |
Safety & GHS
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Toxic
GHS06
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
Hazard statements
- H301 Toxic if swallowed
- H317 May cause an allergic skin reaction
- H373 May cause damage to organs through prolonged or repeated exposure
- H412 Harmful to aquatic life with long lasting effects
Precautionary statements
- P201 Obtain special instructions before use
- P264 Wash thoroughly after handling
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P302+352 IF ON SKIN: Wash with soap and water
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- 1H-Benzimidazole-2-thiol
- 2-Benzimidazolethiol
- 2-MERCAPTOBENZOIMIDAZOLE
- Antiegene MB
- Antigen MB
- Antigene MB
- Antioxidant MB
- AOMB
- o-Phenylenethiourea
- Permanax 21
Frequently asked questions
What is 2-Mercaptobenzimidazole (CAS 583-39-1) commonly used for?
It is primarily used as an antioxidant (Antioxidant MB) in rubber manufacturing, corrosion inhibitor in lubricants, and as a reagent in organic synthesis.
What is the molecular formula and molecular weight of 2-Mercaptobenzimidazole?
The molecular formula is C7H6N2S, and the molecular weight is 150.20 g/mol.
What safety classification does 2-Mercaptobenzimidazole hold, and how should it be handled?
It is classified with the Signal Word: Danger due to its hazardous properties; handle with appropriate PPE and under a fume hood.
What grades or purities of 2-Mercaptobenzimidazole does Molekula supply?
We supply technical grade and analytical/reagent grade (98%+ purity) for research and industrial applications.
Can Molekula supply 2-Mercaptobenzimidazole in bulk quantities?
Yes, we offer bulk packaging options (e.g., 5 kg, 25 kg, and larger drums) for industrial and commercial customers.
What documentation is provided with an order of 2-Mercaptobenzimidazole?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS/SDS), and batch-specific documentation for traceability.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.