Description

S(8) CAS NO 42137-91-7 is a high-purity sulfur-based chemical compound, also known as octasulfur or cyclo-octasulfur, which is the most common and stable allotrope of elemental sulfur. This material is a critical raw material and intermediate in numerous industrial chemical synthesis and manufacturing processes. It is essential for suppliers and manufacturers in the agrochemical, pharmaceutical, rubber vulcanization, and specialty chemical industries seeking a reliable and consistent source of high-quality sulfur.

Application

• Agrochemical Synthesis: A key intermediate and sulfur source in the production of various pesticides, fungicides, and herbicides.
• Pharmaceutical Intermediates: Used in the synthesis of active pharmaceutical ingredients (APIs) and other sulfur-containing drug compounds.
• Rubber Vulcanization: Serves as a fundamental vulcanizing agent in the rubber industry to enhance the durability and elasticity of rubber products.
• Chemical Manufacturing: Acts as a precursor and reagent in the synthesis of sulfur chemicals, such as sulfuric acid, carbon disulfide, and other inorganic compounds.
• Battery Technology: Utilized in the research and development of lithium-sulfur battery cathodes for next-generation energy storage.
• Laboratory & Research: Employed as a standard or starting material in chemical research, analytical chemistry, and educational settings.

Basic Information

Product Name	S(8) CAS NO 42137-91-7
CAS No.	42137-91-7
Molecular Formula	S8
Molecular Weight	256.52 g/mol
Synonyms	Cyclooctasulfur; Octasulfur; Cyclic Octaatomic Sulfur; Sulfur, mol. (S8); Sulfur Ring (S8); Rhombic Sulfur; α-Sulfur; Orthorhombic Sulfur; Elemental Sulfur (S8)
EINECS	Contact for details

Quality Control

Our S(8) is produced and handled under a stringent quality management system to ensure batch-to-batch consistency and high purity. Quality is verified through a series of analytical tests including assay, identification, and impurity profiling. Certificates of Analysis (COA) documenting full specifications are provided with each shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and incompatible materials.

Specification

Item	Specification
Appearance	Bright yellow solid, crystalline powder or lumps
Identification (IR)	Conforms to standard
Assay (S8)	≥ 99.5%
Melting Point	119 - 121 °C
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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