Description

Tetrakis(Hydroxymethyl)Phosphonium Phosphate(2:1) is a highly effective, water-soluble organophosphorus compound. It serves as a critical intermediate and functional chemical, valued for its flame-retardant and durable press finishing properties. This product is essential for manufacturers in the textile, polymer, and specialty chemical industries seeking to enhance material safety and performance.

Application

• Flame Retardant for Textiles and Polymers: A key component in producing durable flame-retardant finishes for cotton, polyester, and their blends, as well as in polyurethane foams and other thermosetting resins.
• Durable Press (DP) Finishing Agent: Used as a co-reactant with other agents to impart wrinkle resistance and shape memory to cellulosic fabrics.
• Paper and Wood Treatment: Imparts fire resistance to paper products, cardboard, and wood composites.
• Oilfield and Water Treatment Chemicals: Acts as a biocide intermediate and a scale/corrosion inhibitor in industrial water systems.
• Adhesive and Resin Modification: Used to modify the properties of adhesives and resins, improving their fire safety and durability.
• Synthesis Intermediate: Serves as a precursor for other tetrakis(hydroxymethyl)phosphonium salts and specialty phosphonium compounds.

Basic Information

Product Name	Tetrakis(Hydroxymethyl)Phosphonium Phosphate(2:1)
CAS No.	100231-78-5
Molecular Formula	C8H28O16P3 or (HOCH2)4P+ • PO43- (2:1)
Molecular Weight	449.19 g/mol
Synonyms	THP Phosphate (2:1); Tetrakis(hydroxymethyl)phosphonium phosphate; Phosphonium, tetrakis(hydroxymethyl)-, phosphate (2:1); THPP; THP-Phosphate; Fire Retardant THP Salt; Proban® CC (related technology); 2:1 THP Phosphate; Tetrahydroxymethylphosphonium phosphate
EINECS	Contact for details

Quality Control

Our Tetrakis(Hydroxymethyl)Phosphonium Phosphate(2:1) is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity, performance, and compliance with industry specifications. A comprehensive Certificate of Analysis (COA) detailing assay, pH, and other critical parameters is provided with every shipment.

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); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture. Separate from strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Assay (by Titration)	≥ 70.0 %
pH (as is or 10% solution)	5.0 - 7.0
Density (at 20°C)	1.30 - 1.40 g/mL
Solubility	Completely soluble in water
Identification (IR)	Conforms to standard

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