Description

(1-Methylethylidene)Di-4,1-Cyclohexanediyl Bis(Mercaptoacetate) is a specialized organic sulfur compound, specifically a dithiol derivative, that serves as a critical cross-linking agent and chain transfer agent in advanced polymer synthesis. Its molecular structure, featuring two reactive thiol groups, makes it invaluable for modifying polymer properties such as flexibility, refractive index, and thermal stability. This high-purity intermediate is essential for manufacturers in the optical materials, specialty adhesives, and high-performance coatings sectors seeking to engineer materials with precise characteristics.

Application

• Optical Lens & Fiber Manufacturing: As a key monomer in the synthesis of high-refractive-index, transparent polythiourethane and polysulfide polymers used for eyeglass lenses, camera lenses, and optical fibers.
• Specialty Adhesives & Sealants: Functions as a cross-linker and modifier in epoxy and polyurethane systems to enhance flexibility, adhesion, and chemical resistance.
• Advanced Polymer Modification: Acts as an effective chain transfer agent (CTA) in radical polymerization to control molecular weight and polymer architecture.
• High-Performance Coatings: Incorporated into coating formulations to improve durability, scratch resistance, and weatherability.
• Pharmaceutical & Agro-chemical Intermediates: Serves as a building block for synthesizing more complex molecules containing disulfide or thioether linkages.

Basic Information

Product Name	(1-Methylethylidene)Di-4,1-Cyclohexanediyl Bis(Mercaptoacetate)
CAS No.	24293-41-2
Molecular Formula	C20H34O4S2
Molecular Weight	402.61 g/mol
Synonyms	Bis(2-mercaptoethyl) Isopropylidene-4,1-cyclohexanediyl Diacetate; 1,1-Bis(4-mercaptomethylcyclohexyl)propane; Isopropylidene Di(4-mercaptomethylcyclohexyl) Diacetate; Dithiol Derivative for Optical Resins; 2,2-Bis(4-((2-mercaptoacetyl)oxy)methylcyclohexyl)propane; Optical Polysulfide Monomer; Crosslinking Dithiol Agent; Chain Transfer Agent CTA (Thiol-type)
EINECS	Contact for details

Quality Control

Our production of (1-Methylethylidene)Di-4,1-Cyclohexanediyl Bis(Mercaptoacetate) adheres to a stringent quality management system to ensure batch-to-batch consistency and high purity, critical for sensitive applications like optical materials. Each lot is analyzed using advanced techniques including HPLC, GC, and NMR spectroscopy. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen) in a cool, dry, and well-ventilated area at 2-8°C to minimize oxidation and prolong shelf life. Keep away from strong oxidizing agents and bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.1%
Refractive Index (n20D)	1.520 - 1.530
Specific Gravity (20°C)	1.10 - 1.15

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