Description

Sulfurous Acid Diphenyl is an organosulfur compound of significant industrial interest. This chemical serves as a versatile intermediate and reagent in the synthesis of more complex molecules, offering unique reactivity due to its sulfur-containing functional group. It is primarily utilized by manufacturers and R&D laboratories in the pharmaceutical, agrochemical, and specialty chemical sectors for process development and production.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs) and drug candidates.
• Agrochemical Synthesis: Used in the production of pesticides, herbicides, and fungicides.
• Polymer & Resin Modifier: Acts as a cross-linking agent or additive to impart specific properties to polymers.
• Chemical Research & Development: A valuable reagent for exploring new synthetic pathways in organic chemistry.
• Lubricant & Fuel Additive Precursor: Employed in the manufacture of performance-enhancing additives.
• Dye & Pigment Manufacturing: Intermediate in the synthesis of sulfur-based dyes and colorants.

Basic Information

Product Name	Sulfurous Acid Diphenyl
CAS No.	4773-12-0
Molecular Formula	C12H10O2S
Molecular Weight	218.27 g/mol
Synonyms	Diphenyl sulfite; Phenol, sulfite (2:1); Sulfurous acid, diphenyl ester; Phenyl sulfite; Diphenyl sulphite; Bis(phenyl) sulfite; NSC 66411
EINECS	225-317-5

Quality Control

Our Sulfurous Acid Diphenyl is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. A detailed Certificate of Analysis (COA) documenting assay, impurity profile, and physical characteristics is provided with each shipment to guarantee compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents, strong bases, and moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Density (at 20°C)	~1.20 g/cm³

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.