Benzenesulfonic Acid | CAS No 26158-00-9

Description

 Product Description

Benzenesulfonic Acid (conjugate base benzenesulfonate) is a strong organic sulfonic acid, is widely utilized in pharmaceuticals, dyes, water treatment, and industrial catalysis. Available as a white to light-yellow crystalline powder with purity grades of 99%, 98%, 95%, and 93%, it offers versatility for diverse industrial requirements. Its high solubility in water, ethanol, and ether ensures efficient reactivity as a key intermediate.

benzenesulfonic acid structure

Technical Specifications

• Other names：Benzene sulphonic acid; Benzenesulphonic acid; Phenylsulfonic acid; Phenylsulphonic acid; Besylic acid
• Melting point: 42-49 °C
  Flash point: 53 °C
  EC NO.:202-638-7
• Density: 1.32 g/cm³ (monohydrate)
• Purity ：99%, 98%, 95%, 93%
• Appearance： White to light-yellow powder
• Storage Conditions ：Cool, dry place; avoid alkalis
• Solubility: easily soluble in water and ethanol, slightly soluble in benzene, insoluble in non-polar solvents such as ether
• Stability: highly hygroscopic, need to be stored away from light and moisture; avoid contact with strong oxidants, acids, and alkalis

Item	Specification
Appearance	white crystal
Assay，%	≥99.00
Dissociative acid，%	≤1.00

Packaging Options：

• 40Kg/Drum: Ideal for R&D or small-scale production.
• 50Kg/Drum: Standard bulk packaging for industrial procurement.
• 250Kg/Drum: Cost-effective solution for large-volume orders.

Key Advantages

• Multiple Purity Grades: 99% for pharmaceutical synthesis; 93%-95% for industrial catalysis.
• Stable Quality: Hygroscopicity-controlled packaging to prevent caking.
• Customization: Tailored purity, packaging, and logistics (DDP/DAP available).
• Global Compliance: Meets REACH, ISO 9001:2015, and other international standards.

Applications

• Pharmaceuticals: Intermediate for antibiotics, antiviral drugs, and sulfonamides.
• Dye Manufacturing: Acid dye synthesis and textile auxiliaries.
• Water Treatment: Functional group source for ion-exchange resins.
• Catalysis: Acid catalyst in esterification and alkylation reactions.
• Polymer Production: Used in sulfonation processes for specialty polymers.

Quality Assurance

• Batch-specific Certificate of Analysis (COA) provided.
• Dual testing via HPLC and titration for purity verification.
• Strict adherence to ISO 9001:2015 quality management protocols.

Logistics & Safety

• Shipped as non-hazardous goods with UN-certified packaging.
• Storage: ≤25°C, away from light and moisture (24-month shelf life).
• MSDS/SDS available upon request.