Description

Tetrakis(Hydroxymethyl)Phosphonium Chloride is a versatile organophosphorus compound with a unique cationic structure. This chemical is a crucial intermediate and functional additive valued for its ability to impart flame retardancy and durable-press properties to materials. It is primarily needed by manufacturers in the textile, polymer, and specialty chemical industries for creating high-performance, safe, and long-lasting products.

Application

• As a key precursor for the synthesis of Tetrakis(Hydroxymethyl)Phosphonium Sulfate (THPS), a widely used biocide and flame retardant.
• As a durable flame-retardant finishing agent for cotton, polyester, and blended fabrics.
• In the production of wrinkle-resistant and durable-press (DP) finishes for textiles.
• As a cross-linking agent and catalyst in polymer and resin formulations.
• As an intermediate in the synthesis of other specialty phosphonium salts and phosphorus-containing compounds.
• In research and development for novel flame-retardant materials and coatings.

Basic Information

Product Name	Tetrakis(Hydroxymethyl)Phosphonium Chloride
CAS No.	124-64-1
Molecular Formula	C4H12ClO4P
Molecular Weight	190.56 g/mol
Synonyms	THPC; Tetrakis(hydroxymethyl)phosphonium chloride; Phosphonium, tetrakis(hydroxymethyl)-, chloride; THP Chloride; Tetrahydroxymethylphosphonium chloride; NSC 402333; 1,3,5,7-Tetraazaadamantane, phosphorus analog; (Hydroxymethyl)phosphonium chloride polymer
EINECS	204-707-1

Quality Control

Our Tetrakis(Hydroxymethyl)Phosphonium Chloride is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity, performance, and compliance with relevant industry specifications. Comprehensive Certificates of Analysis (COA) detailing assay, impurity profiles, and physical properties are available upon request to support your quality assurance protocols.

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) and must be kept in its original, sealed packaging to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (Titration)	≥ 80.0 %
pH (as supplied)	1.0 - 3.0
Water Content	Contact for details
Heavy Metals (as Pb)	< 10 ppm

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