Molekula
Benzenesulfonic acid
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ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Certificate of Analysis with every batch
Benzenesulfonic acid is an aromatic sulfonic acid widely used as a catalyst in organic synthesis, a pH regulator in industrial processes, and an intermediate in the production of dyes, pharmaceuticals, and detergents. It is principally a chemical intermediate for making phenol and resorcinol, and serves as an accelerator in alkyd and phenol-formaldehyde resin manufacture and as an acid catalyst in foundries. It appears as a hygroscopic, deliquescent solid or viscous liquid with strong acidic properties. Catalogue details: CAS 98-11-3, molecular formula C6H5SO3H, molecular weight 158.17 g/mol, stored at ambient conditions. Molekula supplies benzenesulfonic acid from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
This substance is available from Molekula on enquiry. Full specification, Safety Data Sheet and Certificate of Analysis documentation are provided with your quotation once our team confirms the grade and pack size you need.
Overview
- SKU
- 10146910
- CAS Number
- 98-11-3
- IUPAC Name
- benzenesulfonic acid
- EC Number
- 202-638-7
- Molecular Formula
- C6H5SO3H
- Molecular Weight
- 158.17
- Exact Mass
- 158.0038
- SMILES
- C1=CC=C(C=C1)S(=O)(=O)O
- InChIKey
- SRSXLGNVWSONIS-UHFFFAOYSA-N
- InChI
- InChI=1S/C6H6O3S/c7-10(8,9)6-4-2-1-3-5-6/h1-5H,(H,7,8,9)
- PubChem CID
- 7371
Synonyms
- benezenesulfonate
- Benzenemonosulfonic acid
- Benzenesulphonic acid
- benzensulfonic acid
- benzolsulfonsäure
- Besylic acid
- Blu-gard snitizing teat dip
- Kyselina benzensulfonova
- Phenylsulfonic acid
Literature values
Published physical properties of the substance, not batch specifications.
- Appearance
- Fine, deliquescent needles or large plates
- Melting Point
- 51 °C
- Boiling Point
- 190 °C
- Density
- 1.3 (relative, water = 1)
- Vapour Pressure
- 0.0000236 mmHg
Source: PubChem CID 7371 (HSDB, ICSC, Haz-Map)
See all 3 other grades of CAS 98-11-3 →
Frequently asked questions
What is benzenesulfonic acid commonly used for?
Benzenesulfonic acid is primarily used as an intermediate in organic synthesis, dye manufacturing, and as a catalyst in sulfonation reactions.
What is the molecular formula and molecular weight of benzenesulfonic acid?
The molecular formula is **C6H5SO3H** and the molecular weight is **158.17 g/mol**.
How should benzenesulfonic acid be stored?
Store at **ambient temperature** in a cool, dry place, away from incompatible substances and moisture.
What grades or purity levels of benzenesulfonic acid does Molekula supply?
Molekula supplies benzenesulfonic acid in **technical and reagent grades**—contact us for specific purity details.
Can Molekula supply benzenesulfonic acid in bulk quantities?
Yes, we offer bulk packaging options—please inquire for minimum order quantities and pricing.
What documentation comes with an order of benzenesulfonic acid?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and a packing list.
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Molekula has supplied fine chemicals and biochemicals since 1999, and its facilities are ISO 9001:2015 and ISO 14001:2015 certified. Every dispatched batch is logged with a batch number and matched to a Certificate of Analysis, and Safety Data Sheets are available in five languages.