TCI M1270, bearing CAS number 207511-11-3, is Sodium 2-Mercapto-5-benzimidazolesulfonate Dihydrate, the sodium salt of a benzimidazole carrying a thiol group at the 2-position and a sulfonate group on the benzene ring. The combination of these two functional groups makes it a water-soluble heterocyclic compound, in contrast to most benzimidazole derivatives, which tend to be hydrophobic. In the laboratory this material is recognised as a versatile reagent for electrochemical research, metal plating, and the synthesis of functionalised heterocyclic compounds that require a benzimidazole framework carrying both a thiol handle and an ionic handle at the same time.
The characteristic that makes this reagent a frequent choice is its solubility in aqueous media, a result of the ionised sulfonate group, which allows it to be used directly in electrolyte solutions and aqueous reaction systems without recourse to organic solvents. The mercapto group at the two-position has a strong affinity for metal surfaces such as copper and silver, a property that underlies its role as a growth-control agent for deposited layers in electrodeposition processes and as a corrosion inhibitor. The dihydrate form gives a solid that is straightforward to weigh out and handle.
In Indonesian laboratories, this compound is typically encountered in electrochemistry and surface-science groups working on metal deposition and corrosion inhibition, as well as in synthetic chemistry laboratories building functionalised heterocyclic structures. Its aqueous solubility suits it to facilities that prefer to keep work in water-based systems, and the stable dihydrate solid fits the routine weighing and dissolution workflows of university research laboratories, industrial quality-control units, and contract research facilities.
Related TCI products
- TCI P1670 27503-81-7 2-Phenyl-5-benzimidazolesulfonic Acid
- TCI A0425 2349-67-9 2-Amino-5-mercapto-1,3,4-thiadiazole
- TCI A1455 16691-43-3 3-Amino-5-mercapto-1,2,4-triazole
- TCI A0956 1750-12-5 4-Amino-3-hydrazino-5-mercapto-1,2,4-triazole [for Determination of Aldehydes]
- TCI P0640 86-93-1 5-Mercapto-1-phenyl-1H-tetrazole
- TCI N0326 4845-58-3 2-Mercapto-6-nitrobenzothiazole
- Electrodeposition bath research: the mercapto group adsorbs strongly onto copper and silver surfaces, allowing it to act as a growth-control additive that influences how the deposited metal layer develops.
- Corrosion inhibition studies: the same strong affinity of the thiol group for metal surfaces lets it form a protective interface, making it a useful candidate compound in corrosion inhibitor screening work.
- Aqueous electrochemical experiments: the ionised sulfonate group gives direct solubility in electrolyte solutions, so the reagent can be introduced into cells without any organic co-solvent being required.
- Synthesis of functionalised heterocycles: the benzimidazole core provides a ready scaffold, while the thiol handle and ionic handle together allow chemists to build derivatives requiring both features.
- Metal plating process development: as a bath component it supports investigation of surface finish and layer growth behaviour in plating work carried out in water-based systems.
| Brand | TCI |
|---|---|
| CAS number | 207511-11-3 |
| Molecular formula | — |
| Purity | — |
| Category | Chemistry > Building Blocks > Heterocyclic Building Blocks |
| Pack sizes | please refer to the packaging options listed for this catalogue item |
| Physical form | solid, supplied as the dihydrate |
| Storage | — |
- Chemical name: Sodium 2-Mercapto-5-benzimidazolesulfonate Dihydrate
Store the container tightly closed in a cool, dry place away from direct sunlight and from sources of heat or ignition, following the storage conditions stated by the manufacturer for this catalogue item. Keep the material in its original supplier container or in a compatible, clearly labelled, well-sealed container, since the dihydrate form means moisture exchange with the surrounding air should be limited. Handle the solid in a well-ventilated area or fume hood, wear a laboratory coat, chemical-resistant gloves, and safety glasses, and avoid generating dust during weighing. Thiol-bearing compounds may have a noticeable odour, so keep containers closed when not in active use. Consult the manufacturer's Safety Data Sheet before first use and dispose of waste according to your institution's chemical waste procedures.
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