Description

Tetrakis(Hydroxymethyl)Phosphonium Acetate is a versatile organophosphorus compound that serves as a key intermediate and functional additive in several industrial processes. Its primary commercial value lies in its ability to act as a highly effective flame retardant and durable press finishing agent for textiles. This product is essential for manufacturers in the textile, polymer, and specialty chemical industries seeking to enhance material safety and performance. We supply high-purity grades to meet the stringent demands of global B2B customers.

Application

• Flame Retardant for Textiles and Polymers: Imparts durable flame resistance to cotton, polyester, and their blends, as well as polyurethane foams.
• Durable Press (DP) Finishing Agent: Used in cross-linking formulations to provide wrinkle resistance and shape memory to cellulosic fabrics.
• Biocide and Preservative Intermediate: Acts as a precursor for the synthesis of tetrakis(hydroxymethyl)phosphonium sulfate (THPS), a widely used industrial biocide.
• Paper and Wood Treatment: Enhances fire retardancy in specialty papers and wood products.
• Adhesive and Resin Modification: Serves as a cross-linking agent or additive to modify the properties of adhesives and thermosetting resins.
• Oilfield Industry: Used as a component in scale and corrosion inhibitor formulations for water treatment.

Basic Information

Product Name	Tetrakis(Hydroxymethyl)Phosphonium Acetate
CAS No.	7580-37-2
Molecular Formula	C9H21O9P
Molecular Weight	304.23 g/mol
Synonyms	THPA; Tetrakis(hydroxymethyl)phosphonium acetate; Phosphonium, tetrakis(hydroxymethyl)-, acetate; Acetic acid, compd. with tetrakis(hydroxymethyl)phosphonium (1:1); THP acetate; P(CH2OH)4 OAc; 1,3,5,7-Tetraoxa-2,6-diphosphaadamantane derivative (related structure); Textile flame retardant precursor
EINECS	231-493-1

Quality Control

Our Tetrakis(Hydroxymethyl)Phosphonium Acetate is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, activity, and consistency. A Certificate of Analysis (COA) detailing key parameters such as assay, pH, and appearance is provided with each shipment to guarantee traceability and compliance with your quality 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). Keep away from strong acids and organic solvents. The product is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (Titration)	≥ 70.0 %
pH (as supplied)	4.0 - 6.0
Water Content (KF)	≤ 30.0 %
Heavy Metals (as Pb)	≤ 10 ppm

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