Description

Diammonium Pentasulfide is an inorganic ammonium polysulfide compound with the chemical formula (NH4)2S5. It serves as a critical source of active sulfur in various industrial chemical processes, offering a controlled and efficient means of sulfur incorporation. This product is essential for manufacturers in the chemical synthesis, rubber vulcanization, and agricultural chemical sectors seeking a reliable and reactive sulfurizing agent.

Application

• As a sulfurizing agent in the synthesis of specialty chemicals and organosulfur compounds.
• In the formulation of vulcanization accelerators and additives for the rubber industry.
• As a precursor or intermediate in the production of certain agricultural chemicals and pesticides.
• In analytical chemistry as a reagent for qualitative inorganic analysis.
• For surface treatment and modification of metals in specific plating or coating processes.
• In laboratory research and development for exploring new sulfur-based materials and reactions.

Basic Information

Product Name	Diammonium Pentasulfide
CAS No.	12135-77-2
Molecular Formula	H8N2S5
Molecular Weight	196.34 g/mol
Synonyms	Ammonium Pentasulfide; Diammonium Sulfide (S5); Ammonium Polysulfide; (NH4)2S5; Ammonium Sulfide Yellow; Sulfurated Ammonia; Ammonium Hydrogen Sulfide (mixture); Ammonium Pentathionate (related)
EINECS	235-223-4

Quality Control

Our Diammonium Pentasulfide is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure consistent purity, composition, and performance. A comprehensive Certificate of Analysis (COA) detailing assay, identification, and impurity profiles is provided with every 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). Due to its hygroscopic and moisture-sensitive nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture and decomposition. Keep away from strong acids and oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to orange crystalline solid or solution
Identification (IR)	Conforms
Assay (as (NH4)2S5)	≥ 95.0 %
Ammonium (NH4+) Content	17.0 - 19.0 %
Total Sulfur Content	Contact for details
Water Insoluble Matter	≤ 0.5 %

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