Phenyl sulfoxide CAS 945-51-7

Chemical Name: Phenyl sulfoxide
CAS No.: 945-51-7
Molecular Fomula: C12H10OS
Molecular weight: 202.27
Appearance: White to yellow or pink crystalline powder
Assay: ≥99.0%

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Table of Contents

Phenyl Sulfoxide (CAS 945-51-7) Technical Specifications

Parameter Specification Testing Method
Molecular Formula C₆H₅S(O)C₆H₅ NMR/HPLC
Purity ≥99.5% HPLC
Melting Point 70-72°C DSC
Solubility Methanol, DCM, THF USP <631>
Storage 2-8°C in amber glass ICH Q7

Comparative Analysis

Property Phenyl Sulfoxide Diphenyl Sulfone Thioanisole
Oxidation Stability Excellent Good Poor
Reaction Yield 92-95% 85-88% 78-82%
Pharma Compliance USP/EP Industrial Grade Technical Grade

Industrial Applications

Pharmaceutical Intermediates

Critical component in synthesis of:

  • Proton pump inhibitors (PPIs)
  • Antiviral drug intermediates
  • Chiral catalyst systems

Electronic Chemicals

  • Lithium battery electrolyte additive
  • Semiconductor cleaning agents
  • OLED material precursor

Operational Guidelines

Handling Protocols

  1. Use nitrogen atmosphere for oxidation-sensitive reactions
  2. Maintain pH 6.5-7.5 in aqueous systems
  3. Maximum process temperature: 150°C

Safety Data

Parameter Value
Flash Point 162°C
LD50 (Oral) 2,350 mg/kg
GHS Classification H315-H319-H335

Documented Success Cases

Pharma Manufacturer: ABC Therapeutics

  • Application: Omeprazole intermediate synthesis
  • Result: 22% yield improvement vs. previous process
  • Batch Consistency: 99.2-99.8% purity

Electronics Co.: XYZ Materials

  • Usage: Lithium-sulfur battery additive
  • Performance: 15% cycle life extension
  • Purity Requirement: ≥99.99%

Market Alternatives Analysis

Criterion Our Product Competitor A Competitor B
Batch-to-Batch Consistency ±0.3% ±1.2% ±2.5%
Technical Support 24/7 Expert Access Business Hours Only Email Only
Custom Packaging Available Standard Only N/A

Request Technical Consultation

Contact our application engineers for:

  • Custom purity specifications (98%-99.99%)
  • Bulk pricing (100kg+ orders)
  • Regulatory documentation support

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