Description

4,4′-Bis(Mercaptomethyl)Biphenyl is a high-purity aromatic dithiol compound featuring two reactive thiol (-SH) groups. This bifunctional monomer is a critical building block in advanced polymer synthesis, enabling the creation of materials with enhanced thermal stability and mechanical properties. It is primarily utilized by R&D chemists and production engineers in the polymer, specialty chemical, and pharmaceutical intermediate sectors.

Application

• Polymer Synthesis: Key monomer for producing high-performance polyurethanes, polyesters, and epoxy resins with improved thermal and chemical resistance.
• Crosslinking Agent: Used as a crosslinker in elastomer and rubber formulations to enhance durability and aging characteristics.
• Pharmaceutical Intermediates: Serves as a precursor in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Liquid Crystal Polymers (LCPs): A building block for aromatic thermotropic liquid crystal polymers used in electronics and high-strength fibers.
• Adhesive & Sealant Formulations: Imparts improved adhesion and flexibility in high-performance industrial adhesives and sealants.
• Chelating Agent: Acts as a ligand or chelating agent for certain metal ions in catalytic and analytical applications.

Basic Information

Product Name	4,4′-Bis(Mercaptomethyl)Biphenyl
CAS No.	43012-19-7
Molecular Formula	C₁₄H₁₄S₂
Molecular Weight	246.39 g/mol
Synonyms	4,4'-Bis(mercaptomethyl)biphenyl; 4,4'-Bis(mercaptomethyl)-1,1'-biphenyl; 4,4'-Dimercaptomethylbiphenyl; Biphenyl-4,4'-diyldimethanethiol; 1,1'-Biphenyl-4,4'-dimethanethiol; p,p'-Bis(mercaptomethyl)biphenyl; 4,4'-BMMB; BMMB
EINECS	Contact for details

Quality Control

Our 4,4′-Bis(Mercaptomethyl)Biphenyl is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and industry standards. Certificates of Analysis (COA) with full traceability are provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at a controlled room temperature (15-25°C) in a cool, dry, and well-ventilated area. Keep away from oxidizing agents and strong bases.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	105 - 110 °C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm

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