Molekula
4-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
4-Mercaptobenzoic acid is a sulfur-containing aromatic carboxylic acid used in organic synthesis, pharmaceuticals, and as a ligand in coordination chemistry. It is available in high purity with a molecular weight of 154.19 g/mol, a CAS number of 1074-36-8, and a molecular formula of HSC6H4CO2H. Stored at ambient temperature, it carries a warning signal word due to its potential hazards. Molekula supplies 4-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.
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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1 g — £29.50 per pack ex VAT · £35.40 inc. VAT
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5 g — £76.20 per pack ex VAT · £91.44 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 Solid |
| Water | ≤0.30% |
| Assay (HPLC) | ≥98.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 49383024 |
| CAS Number | 1074-36-8 |
| IUPAC Name | 4-sulfanylbenzoic acid |
| Molecular Formula | HSC6H4CO2H |
| Molecular Weight | 154.19 |
| Exact Mass | 154.0089 |
| SMILES | C1=CC(=CC=C1C(=O)O)S |
| InChIKey | LMJXSOYPAOSIPZ-UHFFFAOYSA-N |
| InChI | InChI=1S/C7H6O2S/c8-7(9)5-1-3-6(10)4-2-5/h1-4,10H,(H,8,9) |
| PubChem CID | 95738 |
| REACH Code | Y110 |
| HTS Code | 29309092 |
| 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
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- 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
- 4-Carboxybenzenethiol
- 4-mercaptobenzenecarboxylic acid
- 4-Mercaptobenzoate
- 4-Sulfanylbenzoic acid
- 4-Thiobenzoic acid
- Benzoic acid, 4-mercapto-
- Benzoic acid, p-mercapto-
- p-Mercaptobenzoic acid
- para-Mercaptobenzoate
- paracarboxythiophenol
Frequently asked questions
What is 4-Mercaptobenzoic acid used for?
It is commonly used in the synthesis of pharmaceuticals, agrochemicals, and as a ligand in coordination chemistry due to its thiol and carboxylic acid functional groups.
What is the chemical formula and molecular weight of 4-Mercaptobenzoic acid?
The formula is HSC6H4CO2H and the molecular weight is 154.19 g/mol.
How should 4-Mercaptobenzoic acid be stored?
It should be stored at ambient temperature, protected from moisture and light.
What grade is available for 4-Mercaptobenzoic acid?
Available in technical grade; custom purity options may be available upon request.
Can Molekula supply 4-Mercaptobenzoic acid in bulk?
Yes, bulk quantities are available—please contact our sales team for pricing and availability.
What documentation comes with an order of 4-Mercaptobenzoic acid?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS); additional documentation can be provided upon request.
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.