Description

Dipentene Dimercaptan is a specialized, high-purity organosulfur compound derived from limonene, serving as a critical cross-linking agent and chain transfer agent in advanced polymer synthesis. Its unique molecular structure, featuring dual thiol (-SH) functional groups, enables precise control over polymer architecture and properties, making it indispensable for creating materials with tailored performance. This product is essential for manufacturers in the polymer, rubber, and specialty chemical industries seeking to enhance product durability, flexibility, and thermal stability.

Application

• Polymer Modification: Acts as a key chain transfer agent (CTA) and cross-linker in the production of styrene-butadiene rubber (SBR), polybutadiene rubber (PBR), and other synthetic elastomers to regulate molecular weight and improve mechanical properties.
• Adhesive & Sealant Formulation: Used as a curing agent and adhesion promoter in high-performance polysulfide and polyurethane sealants and adhesives, enhancing flexibility and chemical resistance.
• Lubricant & Fuel Additive: Functions as an extreme pressure (EP) additive and anti-wear agent in advanced lubricant formulations and as a mercaptan source in fuel odorant production.
• Pharmaceutical & Agrochemical Intermediates: Serves as a versatile building block for synthesizing complex molecules in pharmaceutical active ingredients and agrochemicals.
• Surface Coatings & Resins: Incorporated into epoxy, acrylic, and other coating systems to improve cure kinetics, cross-link density, and final film properties like toughness and gloss.
• Radical Polymerization Control: Employed as a highly efficient thiol-ene click chemistry component for creating well-defined polymers, dendrimers, and hydrogels with precise architectures.

Basic Information

Product Name	Dipentene Dimercaptan
CAS No.	4802-20-4
Molecular Formula	C10H18S2
Molecular Weight	202.38 g/mol
Synonyms	Limonene Dimercaptan; 1,8-Dimercapto-p-menthane; p-Menthane-1,8-dithiol; Dipentenedimercaptan; D-Limonene Dimercaptan; NSC 209481; 1,8-Bis(mercapto)-p-menthane
EINECS	225-357-7

Quality Control

Our Dipentene Dimercaptan is manufactured under stringent quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including Gas Chromatography (GC) for assay and impurity profiling, and titration for thiol content verification. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming compliance with agreed specifications. We support our global clients with documentation for regulatory compliance, including REACH.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at 15-25°C under an inert atmosphere (e.g., nitrogen) to prevent oxidation. Keep away from heat, sparks, open flames, and strong oxidizing agents. Due to its thiol functionality, ensure proper ventilation in storage areas.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Thiol Content (Titration)	≥ 9.8 meq/g
Specific Gravity (20°C)	0.98 - 1.02
Refractive Index (n20D)	1.520 - 1.530
Water Content (KF)	≤ 0.5%

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