Description

1,1'-Thiobis(2,3-Epithiopropane) is a specialized sulfur-containing epoxide compound with a unique molecular architecture. This high-purity intermediate is critical for synthesizing advanced materials with tailored optical and mechanical properties. It is primarily sought after by manufacturers in the optical resin, high-refractive-index polymer, and specialty adhesive sectors, where its dual epoxide and episulfide functionalities enable precise material engineering.

Application

• Key monomer for high-refractive-index optical plastics used in camera lenses, LED encapsulants, and optical fibers.
• Critical intermediate in the synthesis of episulfide-based polymers for advanced optical components.
• Crosslinking agent for producing thermosetting resins with enhanced heat resistance and clarity.
• Building block for specialty adhesives and sealants requiring high purity and specific reactivity.
• Research and development of novel functional materials in academic and industrial laboratories.

Basic Information

Product Name	1,1'-Thiobis(2,3-Epithiopropane)
CAS No.	188829-97-2
Molecular Formula	C6H8O2S3
Molecular Weight	208.32 g/mol
Synonyms	Bis(2,3-epithiopropyl) Sulfide; 2,2'-Thiobis(thiirane); 1,1'-Sulfinylbis(2,3-epithiopropane); 2,2'-(Thiobis(methylene))bis(thiirane); Episulfide Crosslinker; High RI Monomer; Optical Resin Intermediate; Sulfur-containing Diepoxide
EINECS	Contact for details

Quality Control

Our production of 1,1'-Thiobis(2,3-Epithiopropane) adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including assay, impurity profiling, and identity confirmation, to ensure it meets the exacting standards required for advanced material synthesis. A Certificate of Analysis (COA) detailing purity, physical characteristics, and test results is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Keep away from heat, sparks, and open flame. Due to its light-sensitive nature, containers should be kept in opaque packaging or amber glass.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.600 - 1.620
Specific Gravity (20°C)	1.35 - 1.45

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