Description

3,3'-Dihydroxydiphenyl Disulfide is an organic sulfur compound featuring a disulfide bridge connecting two hydroxyphenyl groups. This structure makes it a valuable intermediate and building block in the synthesis of more complex molecules, particularly in polymer chemistry and material science. It is sought after by R&D chemists and production specialists in industries such as specialty polymers, pharmaceuticals, and agrochemicals for its unique reactivity and functional properties.

Application

• Polymer Modification: Acts as a chain extender, cross-linking agent, or modifier in the synthesis of high-performance polymers, including polyurethanes and epoxy resins, to enhance thermal stability and mechanical properties.
• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of active pharmaceutical ingredients (APIs) and drug candidates that require a disulfide or phenolic functional group.
• Rubber & Elastomer Industry: Used as a vulcanizing agent or antioxidant precursor to improve the aging resistance and durability of synthetic rubbers.
• Agrochemical Synthesis: Employed in the production of certain herbicides, fungicides, and plant growth regulators where the disulfide linkage is integral to biological activity.
• Adhesive & Coating Formulations: Functions as an adhesion promoter and curing agent in specialty adhesive and coating systems, contributing to enhanced bonding and chemical resistance.
• Research & Development: Utilized in academic and industrial labs as a model compound for studying disulfide chemistry, redox reactions, and for developing new synthetic methodologies.

Basic Information

Product Name	3,3'-Dihydroxydiphenyl Disulfide
CAS No.	21101-56-4
Molecular Formula	C12H10O2S2
Molecular Weight	250.34 g/mol
Synonyms	3,3'-Dithiodiphenol; Bis(3-hydroxyphenyl) Disulfide; 3-Hydroxyphenyl Disulfide; 3,3'-Dihydroxybiphenyl Disulfide; 1,1'-Dithiobis(3-hydroxybenzene); Phenol, 3,3'-dithiodi-; Dithiodi-3,3'-phenol
EINECS	244-200-7

Quality Control

Our 3,3'-Dihydroxydiphenyl Disulfide is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity and identity. A comprehensive Certificate of Analysis (COA) detailing results for assay, related substances, and physical characteristics is provided with every shipment to guarantee traceability and compliance with your quality requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. Due to its light-sensitive nature, the container should be opaque or stored in dark conditions.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	125 - 130 °C
Loss on Drying	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%

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