Molekula
2-Mercaptobenzimidazole
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · 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
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 — $44.20 per pack
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.
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.