Description

p-Xylylenebis(Tetrahydrothiophenium Chloride), 98+% is a high-purity, bifunctional sulfonium salt monomer. This compound is a critical precursor in the synthesis of advanced polymeric materials, particularly poly(p-xylylene) derivatives via chemical vapor deposition. It is essential for industries requiring ultra-thin, conformal, and pinhole-free polymer coatings with excellent barrier properties. Key applications span the electronics, medical device, and advanced materials sectors.

Application

• Parylene Coating Precursor: Primary monomer for the vapor deposition synthesis of Parylene N and related poly(p-xylylene) coatings.
• Electronics Encapsulation: Used to create protective, dielectric coatings for printed circuit boards (PCBs), sensors, and microelectromechanical systems (MEMS).
• Medical Device Coating: Provides biocompatible, moisture-resistant, and insulating barriers for implantable devices, stents, and surgical tools.
• Corrosion Protection: Applied as a conformal coating on metal components in aerospace, automotive, and marine applications to prevent oxidation and corrosion.
• Barrier Films for Packaging: Used in the development of high-performance barrier layers for sensitive electronic and pharmaceutical packaging.
• Adhesion Promotion: Serves as an interfacial layer to enhance adhesion between dissimilar materials in composite manufacturing.
• Research & Development: Key reagent in academic and industrial R&D for developing novel polymeric materials and thin-film technologies.

Basic Information

Product Name	p-Xylylenebis(Tetrahydrothiophenium Chloride), 98+%
CAS No.	52547-07-6
Molecular Formula	C16H26Cl2S2
Molecular Weight	353.41 g/mol
Synonyms	p-Xylylene-α,α'-bis(tetrahydrothiophenium chloride); [p-Xylylenebis(tetrahydrothiophenium)] Dichloride; Di(p-xylylene)bis(tetrahydrothiophenium chloride); Parylene N Dimer Derivative; 1,4-Bis[(tetrahydrothiophen-1-ium-1-yl)methyl]benzene Dichloride; Bis(tetrahydrothiophenium p-xylylene) Dichloride; Parylene Precursor Salt; CAS 52547-07-6
EINECS	Contact for details

Quality Control

Our p-Xylylenebis(Tetrahydrothiophenium Chloride) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets the high-purity specification of 98+% and is free from critical impurities. Certificates of Analysis (COA) detailing purity, identity, and other key parameters are provided to guarantee traceability and 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 a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and must be kept under dry, inert conditions to prevent degradation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0 %
Water Content (KF)	≤ 1.0 %
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.