Molekula
2-Mercaptobenzoic acid
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-Mercaptobenzoic acid is an organosulfur compound with a thiol functional group, widely used as a chelating agent, reducing agent, and in the synthesis of pharmaceuticals, agrochemicals, and dyes. It also serves as a precursor in the production of thioesters and as a reagent in analytical chemistry for metal ion detection. This chemical has a CAS number of 147-93-3, with the molecular formula HSC6H4CO2H and a molecular weight of 154.19. It is stable at ambient storage conditions and labeled with a signal word of Warning. Molekula supplies 2-Mercaptobenzoic acid 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.
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100 g — £68.20 per pack ex VAT · £81.84 inc. VAT
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Specifications
| Property | Value |
|---|---|
| Appearance | Light yellow crystalline powder |
| Melting Point | 162 - 167℃ |
| Loss on Drying | ≤0.5% |
| Residue on Ignition | ≤1.0% |
| Assay (Titration) | ≥96.0% |
| Assay HPLC | ≥95.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 150 °C |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Crystals (sodium salt) |
| Melting Point | 168-169 °C |
| Solubility (other solvents) | Sol in hot water, alcohol, ether, acetic acid; slightly soluble in petroleum ether |
Source: PubChem CID 5443 (HSDB)
Identification
| Property | Value |
|---|---|
| SKU | 16886299 |
| CAS Number | 147-93-3 |
| IUPAC Name | 2-sulfanylbenzoic acid |
| EC Number | 205-704-3 |
| Molecular Formula | HSC6H4CO2H |
| Molecular Weight | 154.19 |
| Exact Mass | 154.0089 |
| SMILES | C1=CC=C(C(=C1)C(=O)O)S |
| InChIKey | NBOMNTLFRHMDEZ-UHFFFAOYSA-N |
| InChI | InChI=1S/C7H6O2S/c8-7(9)5-3-1-2-4-6(5)10/h1-4,10H,(H,8,9) |
| PubChem CID | 5443 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 2930.90.10.00 |
| Tariff Code | 2930909599 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, 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
- 2-Carboxythiophenol
- 2-Sulfanylbenzoic acid
- 2-Thiosalicylic acid
- Benzoic acid, 2-mercapto-
- o-Benzoic acid thiol
- o-Carboxythiophenol
- o-Mercaptobenzoic acid
- o-Sulfhydrylbenzoic acid
- o-Thiosalicylic acid
- Thiosalicylic acid
Frequently asked questions
What is 2-Mercaptobenzoic acid commonly used for?
It is primarily used as a reagent in organic synthesis, particularly for thiol-disulfide exchange reactions, and as a precursor in pharmaceutical and agrochemical manufacturing.
What is the molecular formula and molecular weight of 2-Mercaptobenzoic acid?
The molecular formula is **HSC₆H₄CO₂H** and the molecular weight is **154.19 g/mol**.
What safety classification does 2-Mercaptobenzoic acid have?
The product is classified with a **Signal Word: Warning** under GHS regulations.
How should 2-Mercaptobenzoic acid be stored?
Store in a tightly sealed container at **ambient temperature**, away from moisture and incompatible substances.
Can Molekula supply 2-Mercaptobenzoic acid in bulk quantities?
Yes, Molekula can provide bulk quantities of 2-Mercaptobenzoic acid upon request, subject to availability and order specifications.
What documentation is provided with an order of 2-Mercaptobenzoic acid?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and a packing slip with batch details.
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.