Description

5,5,5',5'-Tetramethyl-2,2'-Bi[1,3,2-Dioxaphosphorinane]2,2'-Disulfide is a specialized organophosphorus compound with a unique bicyclic structure containing a disulfide bridge. This compound is valued as a high-performance phosphorus-based additive and intermediate, offering enhanced thermal stability and specific reactivity. It is primarily utilized in advanced material science and specialty chemical synthesis, where its structural features enable precise control over polymer properties and reaction pathways.

Application

• Polymer Additive: Acts as a flame retardant synergist or stabilizer in engineering plastics and high-performance polymers.
• Lubricant & Grease Formulation: Serves as an extreme pressure (EP) additive and anti-wear agent in advanced synthetic lubricants.
• Chemical Intermediate: Used in the synthesis of more complex phosphorus-containing ligands, catalysts, and bioactive molecules.
• Epoxy Resin Curing Agent/Modifier: Imparts improved thermal and mechanical properties to cured epoxy systems.
• Rubber Vulcanization: Functions as a secondary accelerator or modifier in specialty rubber compounding.
• Metalworking Fluids: Incorporated as a key component to provide lubrication and corrosion protection in demanding machining operations.

Basic Information

Product Name	5,5,5',5'-Tetramethyl-2,2'-Bi[1,3,2-Dioxaphosphorinane]2,2'-Disulfide
CAS No.	16368-08-4
Molecular Formula	C12H24O4P2S2
Molecular Weight	358.38 g/mol
Synonyms	2,2'-Dithiobis(5,5-dimethyl-1,3,2-dioxaphosphorinane 2-oxide); 5,5-Dimethyl-1,3,2-dioxaphosphorinane 2-sulfide dimer; Tetramethyl Dioxaphosphorinane Disulfide; Bis(5,5-dimethyl-2-oxido-1,3,2-dioxaphosphorinanyl) disulfide; Dithiobis(dimethyldioxaphosphorinane oxide); Phosphorinane disulfide derivative
EINECS	Contact for details

Quality Control

Our production of 5,5,5',5'-Tetramethyl-2,2'-Bi[1,3,2-Dioxaphosphorinane]2,2'-Disulfide adheres to strict quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC for purity and NMR for structural confirmation, to ensure consistency and compliance with customer specifications. A comprehensive Certificate of Analysis (COA) detailing all 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 area at ambient temperature (15-25°C). Keep away from strong oxidizing agents and strong bases. The container should be kept tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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