Description

Tetrasulfide, Ethyl Methyl is a specialized organosulfur compound with the CAS registry number 72437-44-6. This chemical is valued for its role as a versatile sulfur donor and cross-linking agent in advanced material synthesis. It is primarily utilized by manufacturers in the polymer, rubber, and specialty chemical industries seeking to modify material properties such as elasticity, thermal stability, and vulcanization characteristics.

Application

• Rubber Vulcanization Accelerator: Acts as a sulfur donor and curing agent in the production of synthetic rubbers and elastomers, enhancing cross-link density and mechanical properties.
• Polymer Modification: Used to introduce sulfur bridges into polymer chains, improving thermal stability, oil resistance, and aging characteristics of specialty plastics.
• Lubricant and Grease Additive: Serves as an extreme pressure (EP) additive and anti-wear agent in industrial lubricants and metalworking fluids.
• Chemical Intermediate: Employed in organic synthesis for the preparation of other sulfur-containing compounds, including certain agrochemicals and pharmaceuticals.
• Sealant and Adhesive Formulation: Imparts improved flexibility and chemical resistance to polysulfide-based sealants and high-performance adhesives.

Basic Information

Product Name	Tetrasulfide, Ethyl Methyl
CAS No.	72437-44-6
Molecular Formula	C3H8S4
Molecular Weight	172.34 g/mol
Synonyms	Ethyl Methyl Tetrasulfide; Methyl Ethyl Tetrasulfide; 1-(Methylthio)-2-(ethylthio)disulfane; 1,2-Bis(ethylthio)disulfane (isomer); Bis(ethylmethyl) tetrasulfide; Tetrasulfide, methyl ethyl; Organotetrasulfide crosslinker; Sulfur donor CAS 72437-44-6
EINECS	Contact for details

Quality Control

Our production of Ethyl Methyl Tetrasulfide adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including assay, purity verification, and impurity profiling, to ensure consistency and performance. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents, strong acids, and strong bases. This material is moisture-sensitive (hygroscopic); ensure containers are kept tightly sealed when not in use.

Specification

Item	Specification
Appearance	Clear to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 95.0%
Specific Gravity (20°C)	1.20 - 1.30
Water Content (KF)	≤ 0.5%

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