Description

Tris(Hydroxymethyl)Phosphonium Chloride is a versatile organophosphorus compound that serves as a key intermediate and functional additive in several high-value industrial processes. Its unique chemical structure, featuring a positively charged phosphonium center with hydroxymethyl groups, makes it a powerful reducing agent and a precursor for flame-retardant materials. This product is essential for manufacturers in the textile, polymer, and specialty chemical sectors seeking to enhance product performance and safety. We supply high-purity grades to meet the stringent demands of global industrial applications.

Application

• Flame Retardant for Textiles and Polymers: Acts as a highly effective durable flame retardant, particularly for cellulosic fabrics like cotton, through the Proban® process and related technologies.
• Chemical Intermediate: Serves as a crucial precursor for synthesizing other phosphonium salts, phosphines, and specialized organophosphorus compounds.
• Reducing Agent in Electroless Plating: Used in the formulation of baths for electroless nickel plating, where it reduces nickel ions to deposit a uniform metallic coating on substrates.
• Paper Treatment: Imparts wet-strength and flame-retardant properties to paper and paperboard products.
• Wood Preservative Intermediate: Employed in the production of formulations that protect wood from fungal decay and insect damage.
• Crosslinking Agent: Functions as a crosslinker in the manufacture of certain resins and polymers, improving their thermal and mechanical stability.

Basic Information

Product Name	Tris(Hydroxymethyl)Phosphonium Chloride
CAS No.	55953-80-5
Molecular Formula	C3H10ClO3P
Molecular Weight	160.54 g/mol
Synonyms	THPC; Tris(hydroxymethyl)phosphine hydrochloride; Phosphonium, tris(hydroxymethyl)-, chloride; Chlorure de tris(hydroxyméthyl)phosphonium (French); Tris(hydroxymethyl)phosphoniumchlorid (German); THP Chloride; 1,3,5-Triaza-7-phosphaadamantane-7-ium chloride derivative (related); Tris(methylol)phosphonium chloride
EINECS	259-909-0

Quality Control

Our Tris(Hydroxymethyl)Phosphonium Chloride is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, assay, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment. Our quality commitment ensures batch-to-batch consistency and reliability for your critical processes.

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). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent absorption of atmospheric moisture, which can lead to decomposition or caking.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Assay (by Titration)	≥ 80.0 %
pH (as supplied)	1.0 - 3.0
Water Content	Contact for details
Identification (IR)	Conforms

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