Description

Polytetrahydrofuran (CAS NO 24979-97-3) is a high-performance polyether polyol derived from the ring-opening polymerization of tetrahydrofuran. This versatile polymer is valued for its excellent flexibility, hydrolytic stability, and low-temperature properties, making it a critical intermediate in the production of advanced materials. It is essential for manufacturers in the polyurethane, elastomer, and specialty coatings industries seeking to enhance product durability and performance.

Application

• Polyurethane Elastomers: A key soft segment component for producing high-performance, abrasion-resistant, and flexible elastomers used in wheels, rollers, and industrial belts.
• Spandex Fibers: Serves as a macrodiol in the synthesis of spandex (elastane) fibers, providing exceptional elasticity and recovery for athletic and performance apparel.
• Thermoplastic Polyurethanes (TPU): Used to manufacture TPUs with superior low-temperature flexibility, toughness, and hydrolysis resistance for films, hoses, and cable sheathing.
• Coatings and Adhesives: Imparts flexibility, adhesion, and chemical resistance to high-performance coatings, sealants, and adhesives.
• Engineering Plastics: Acts as a modifier to improve the impact resistance and low-temperature performance of various engineering plastics.
• Medical Device Components: Utilized in the production of biocompatible, flexible tubing and other components requiring high purity and stability.

Basic Information

Product Name	Polytetrahydrofuran
CAS No.	24979-97-3
Molecular Formula	(C4H8O)n
Molecular Weight	Variable (Typically 650 - 2900 g/mol)
Synonyms	PolyTHF; PTMEG (Polytetramethylene Ether Glycol); Poly(tetramethylene ether) glycol; Poly(tetrahydrofuran); α-Hydro-ω-hydroxypoly(oxy-1,4-butanediyl); Tetrahydrofuran homopolymer; Poly(oxytetramethylene) glycol
EINECS	246-585-8

Quality Control

Our Polytetrahydrofuran is manufactured under stringent quality management systems to ensure batch-to-batch consistency and reliability. Quality is verified through comprehensive analytical testing, including hydroxyl value, water content, peroxide value, and molecular weight distribution analysis. A Certificate of Analysis (COA) detailing all specifications is provided with each shipment to guarantee compliance with your technical requirements.

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 and easily oxidized nature, it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term preservation and to minimize moisture uptake and peroxide formation.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Hydroxyl Value (mg KOH/g)	Contact for details
Water Content (%)	≤ 0.05
Peroxide Value (meq/kg)	≤ 5.0
Molecular Weight (Mn)	650, 1000, 2000, 2900 (Typical grades)
Acid Value (mg KOH/g)	≤ 0.05
Color (APHA)	≤ 50

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