Benzenesulfonic acid, 94%, Thermo Scientific Chemicals

Description

Benzenesulfonic acid is mainly consumed by conversion to other specialty chemicals. A variety of pharmaceutical drugs are prepared as salts of benzenesulfonic acid and are known as besylates or besilates. The alkali metal salt of benzenesulfonic acid was once widely used in the production of phenol. It acts as an acid catalyst for direct esterification of amino acids and peptides.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
Benzenesulfonic acid is mainly consumed by conversion to other specialty chemicals. A variety of pharmaceutical drugs are prepared as salts of benzenesulfonic acid and are known as besylates or besilates. The alkali metal salt of benzenesulfonic acid was once widely used in the production of phenol. It acts as an acid catalyst for direct esterification of amino acids and peptides.

Solubility
Soluble in water and alcohol. Slightly soluble in benzene. Insoluble in non-polar solvents.

Notes
It is hygroscopic. Incompatible with oxidizing agents and bases.

Specifications

Chemical Identifiers

• CAS: 98-11-3
• Molecular Formula: C6H6O3S
• Molecular Weight (g/mol): 158.171
• MDL Number: MFCD00011689
• InChI Key: SRSXLGNVWSONIS-UHFFFAOYSA-N
• Synonym: benzenesulphonic acid, phenylsulfonic acid, besylic acid, benzene sulphonic acid, benzenemonosulfonic acid, benzene sulfonic acid, kyselina benzensulfonova, benzensulfonic acid, ccris 4595, kyselina benzensulfonova czech
• PubChem CID: 7371
• ChEBI: CHEBI:64455
• IUPAC Name: benzenesulfonic acid
• SMILES: C1=CC=C(C=C1)S(=O)(=O)O

• Melting Point: ∼45°C to 50°C
• Density: 1.32
• Flash Point: >110°C (230°F)
• Quantity: 500 g
• UN Number: UN2585
• Beilstein: 742513
• Sensitivity: Hygroscopic
• Merck Index: 14,1070
• Solubility Information: Soluble in water and alcohol. Slightly soluble in benzene. Insoluble in non-polar solvents.
• Formula Weight: 158.18
• Percent Purity: 94%
• Chemical Name or Material: Benzenesulfonic acid

Safety and Handling

Product Identifier

• Benzenesulfonic acid

Signal Word

• Danger

Hazard Category

• Acute toxicity Category 4
• Serious eye damage/eye irritation Category 1
• Skin corrosion/irritation Category 1 C

Hazard Statement

• H302-Harmful if swallowed.
• H314-Causes severe skin burns and eye damage.
• H318-Causes serious eye damage.

Precautionary Statement

• P280-Wear protective gloves/protective clothing/eye protection/face protection.
• P301+P330+P331-IF SWALLOWED: rinse mouth. Do NOT induce vomiting.
• P303+P361+P353-IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/ shower.
• P304+P340-IF INHALED: Remove person to fresh air and keep comfortable for breathing.
• P305+P351+P338-IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
• P310-Immediately call a POISON CENTER/doctor/.

Supplemental information

• MIXTURE LIST-Contains : Benzenesulfonic acid

RUO – Research Use Only