Description

Tetrakis(Hydroxymethyl)Phosphoniumhydroxybutanedioate is a water-soluble, phosphorus-based organic compound primarily used as a highly effective flame retardant and durable press finishing agent. Its unique chemical structure allows it to form stable covalent bonds with cellulose fibers, providing long-lasting performance. This makes it a critical raw material for manufacturers in the textile, polymer, and specialty chemical industries seeking to enhance the safety and functionality of their products.

Application

• Textile Flame Retardant: A key component in durable flame-retardant finishes for cotton, cotton blends, and other cellulosic fabrics used in protective clothing, home furnishings, and industrial textiles.
• Durable Press (DP) Finishing: Imparts wrinkle resistance and shape memory to cotton garments and fabrics, improving their appearance and ease of care.
• Polymer Modification: Acts as a reactive flame-retardant additive or cross-linking agent in certain thermosetting resins and polymer systems.
• Wood Treatment: Used in formulations to impart fire resistance to wood and wood-based composite materials.
• Paper Treatment: Enhances the flame retardancy of specialty papers and paperboard products.
• Synthesis Intermediate: Serves as a chemical intermediate for the production of other phosphonium-based compounds and specialty chemicals.

Basic Information

Product Name	Tetrakis(Hydroxymethyl)Phosphoniumhydroxybutanedioate
CAS No.	39734-92-4
Molecular Formula	C9H19O11P
Molecular Weight	334.21 g/mol
Synonyms	THP Hydroxybutanedioate; Tetrakis(hydroxymethyl)phosphonium Succinate; THPS; THP-Succinate; Phosphonium, tetrakis(hydroxymethyl)-, salt with 1,4-butanedioic acid (1:1); THP Salt of Succinic Acid; Flame Retardant THPS; CAS 39734-92-4
EINECS	Contact for details

Quality Control

Our Tetrakis(Hydroxymethyl)Phosphoniumhydroxybutanedioate is manufactured under a stringent 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 to guarantee traceability and quality assurance for our global B2B clients.

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); ensure containers are kept tightly sealed when not in use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (THP Salt)	≥ 75.0 %
pH (as is)	3.0 - 5.0
Water Content	≤ 25.0 %
Density (20°C)	1.30 - 1.40 g/mL

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