Description

Phosphorus Sesquisulfide is an inorganic chemical compound with the formula P4S3. It serves as a critical precursor in the synthesis of organophosphorus compounds, valued for its controlled reactivity. This material is essential for manufacturers in the chemical, agrochemical, and specialty materials sectors seeking reliable, high-purity intermediates.

Application

• Primary raw material for the synthesis of organophosphorus insecticides and pesticides.
• Key intermediate in the production of lubricant additives and oil stabilizers.
• Used in the manufacture of specialized matches and pyrotechnic compositions.
• Precursor for certain flame retardants and plastic additives.
• Employed in research and development for novel phosphorus-sulfur chemistry.
• Starting material for the synthesis of phosphorus-based ligands used in catalysis.

Basic Information

Product Name	Phosphorus Sesquisulfide
CAS No.	1314-85-8
Molecular Formula	P4S3
Molecular Weight	220.09 g/mol
Synonyms	Tetraphosphorus Trisulfide; Phosphorus Trisulfide; Trisulfurated Phosphorus; Phosphorous Sulfide (P4S3); Sesquisulfure de Phosphore; EINECS 215-245-0
EINECS	215-245-0

Quality Control

Our Phosphorus Sesquisulfide is produced under stringent quality management protocols. Each batch undergoes comprehensive analytical testing to ensure it meets the high-purity standards required for industrial synthesis. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat, sparks, and open flame. Due to its nature of being easily oxidized, it is recommended to store under an inert atmosphere such as nitrogen or argon for long-term preservation. Keep container tightly sealed when not in use to minimize exposure to air and moisture.

Specification

Item	Specification
Appearance	Yellow to greenish-yellow crystalline solid
Identification (IR)	Conforms
Assay (P4S3)	≥ 98.0 %
Melting Point	172 - 175 °C
Insoluble Matter	≤ 0.1 %

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