Description

Bis[Tetrakis(Hydroxymethyl)Phosphonium] Oxalate is a specialized organophosphorus compound that serves as a highly effective and stable source of tetrakis(hydroxymethyl)phosphonium (THP) cations. This chemical is valued for its role as a powerful biocide and flame-retardant precursor, offering a non-volatile and safer-to-handle alternative to gaseous phosphine-based agents. It is primarily utilized by manufacturers in the textile, polymer, and water treatment industries seeking durable antimicrobial protection and enhanced material safety.

Application

• Textile Finishing: As a key component in durable flame-retardant and antimicrobial finishes for cotton, polyester, and blended fabrics.
• Polymer Modification: As an additive or reactive intermediate to impart flame retardancy to polyurethane foams, coatings, and adhesives.
• Industrial Biocide: For the control of bacteria, fungi, and algae in industrial water systems, paper mill slurries, and oilfield applications.
• Wood Preservation: In formulations designed to protect lumber and wood composites from fungal decay and insect damage.
• Leather Processing: As a tanning auxiliary and preservative agent to prevent microbial degradation.
• Chemical Synthesis: As a stable precursor for generating THP salts or other phosphonium derivatives in specialty organic synthesis.

Basic Information

Product Name	Bis[Tetrakis(Hydroxymethyl)Phosphonium] Oxalate
CAS No.	52221-67-7
Molecular Formula	C14H32O14P2
Molecular Weight	510.33 g/mol
Synonyms	Bis(THP) Oxalate; Tetrakis(hydroxymethyl)phosphonium Oxalate (2:1); THPO; Oxalic acid bis[tetrakis(hydroxymethyl)phosphonium] salt; Phosphonium, tetrakis(hydroxymethyl)-, oxalate (2:1); Bis[tetrakis(hydroxymethyl)phosphonium] ethanedioate; THP Oxalate salt; Antimicrobial agent THPO
EINECS	257-761-1

Quality Control

Our Bis[Tetrakis(Hydroxymethyl)Phosphonium] Oxalate is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure consistent purity, performance, and compliance with relevant industry specifications. A Certificate of Analysis (COA) detailing key parameters is provided with each 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). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect product stability and performance.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (Titration)	≥ 95.0 %
Water Content (KF)	≤ 3.0 %
pH (10% solution)	3.0 - 5.0
Oxalate Content	Conforms

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