Description

Di-tert-Butyl Polysulfide is a specialized organosulfur compound primarily used as a vulcanizing agent and sulfur donor in the polymer industry. Its controlled release of sulfur makes it a critical component for achieving specific crosslink densities and enhancing the thermal and mechanical properties of elastomers. This product is essential for manufacturers in the rubber, specialty polymer, and lubricant additive sectors seeking to fine-tune material performance.

Application

• Rubber Vulcanization: Acts as a sulfur donor for the crosslinking of various synthetic and natural rubbers, including EPDM, NBR, and butyl rubber, improving heat resistance and compression set.
• Polymer Modification: Used to introduce sulfur linkages into polymer chains, modifying properties such as oil resistance, gas barrier performance, and dynamic stability.
• Lubricant & Grease Additive: Serves as an extreme pressure (EP) and anti-wear additive in industrial lubricants and greases, forming protective sulfide films on metal surfaces.
• Chemical Intermediate: Employed in organic synthesis for the introduction of tert-butylthio or polysulfide functional groups into target molecules.
• Sealant & Adhesive Formulation: Imparts enhanced elasticity and durability to polysulfide-based sealants and adhesives used in construction and aerospace.
• Curing Agent for Specialty Resins: Functions as a co-agent in the curing systems for certain epoxy and phenolic resins, influencing final material toughness.

Basic Information

Product Name	Di-tert-Butyl Polysulfide
CAS No.	68937-96-2
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Di-tert-butyl polysulfide; tert-Butyl polysulfide; Bis(1,1-dimethylethyl) polysulfide; DTBP; Sulfurized di-tert-butyl; Vulcanizing agent DTBP; tert-Butyl polysulfide oligomer; Di-tert-butyl tetrasulfide (major component)
EINECS	Contact for details

Quality Control

Our Di-tert-Butyl Polysulfide is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent composition, sulfur content, and performance as a vulcanizing agent. Certificates of Analysis (COA) detailing key parameters are provided to guarantee compliance with your technical requirements and support your own quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat sources and incompatible materials such as strong oxidizing agents. Recommended storage temperature is between 15°C and 25°C. Keep container tightly sealed when not in use to prevent moisture absorption and maintain product integrity.

Specification

Item	Specification
Appearance	Clear, pale yellow to amber liquid
Identification (IR)	Conforms
Assay (as total sulfur donor)	≥ 95.0 %
Sulfur Content	Contact for details
Specific Gravity (20°C)	Contact for details
Refractive Index (20°C)	Contact for details

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