Description

1,4-Phenylenebis-3-Thiosemicarbazide is a high-purity organic compound belonging to the thiosemicarbazide class, valued for its role as a versatile chemical intermediate and functional additive. Its molecular structure, featuring dual thiosemicarbazide groups on a phenyl backbone, provides excellent chelating and stabilizing properties critical for advanced material synthesis. This product is essential for manufacturers in the polymer, specialty chemical, and analytical reagent industries seeking to enhance product performance and stability.

Application

• Polymer Stabilizer and Antioxidant: Acts as a highly effective metal deactivator and antioxidant in polyolefins (e.g., polyethylene, polypropylene) and other polymers to prevent thermal and oxidative degradation during processing and service life.
• Crosslinking Agent and Modifier: Serves as a crosslinking or chain-extending agent in polyurethane and epoxy resin systems to improve mechanical strength, thermal stability, and chemical resistance.
• Chemical Intermediate: Used in the synthesis of more complex heterocyclic compounds, pharmaceuticals, and agrochemicals due to its reactive functional groups.
• Analytical Reagent: Employed in analytical chemistry as a selective chelating agent for the detection, separation, and gravimetric determination of specific metal ions.
• Corrosion Inhibitor Formulation: Incorporated into coatings and lubricant additives as a component that chelates metal ions, helping to prevent catalytic degradation and corrosion.
• Flame Retardant Synergist: Can be used as a component in flame-retardant formulations for plastics and textiles, where it promotes char formation and reduces smoke emission.

Basic Information

Product Name	1,4-Phenylenebis-3-Thiosemicarbazide
CAS No.	1728-67-2
Molecular Formula	C8H12N6S2
Molecular Weight	264.35 g/mol
Synonyms	p-Phenylenebis(thiosemicarbazide); 1,4-Bis(3-thiosemicarbazido)benzene; N,N'-(1,4-Phenylene)bis[hydrazinecarbothioamide]; 1,4-Phenylene di-3-thiosemicarbazide; p-Phenylene bis(thiosemicarbazide); PBTC; Thiosemicarbazide, N,N'-(1,4-phenylene)bis-
EINECS	217-045-5

Quality Control

Our 1,4-Phenylenebis-3-Thiosemicarbazide is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets stringent specifications for identity, purity, and physical properties. A Certificate of Analysis (COA) detailing the results for all critical parameters is provided with each shipment to guarantee traceability and batch-to-batch consistency for our global B2B clients.

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, strong acids, and strong bases. The product may be moisture-sensitive; ensure the container is kept sealed when not in use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	245 - 255 °C (dec.)
Loss on Drying	≤ 1.0 %
Residue on Ignition	≤ 0.1 %
Heavy Metals (as Pb)	≤ 20 ppm

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