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PTMG Polytetrahydrofuran

Name: PTMG Polytetrahydrofuran
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Polytetrahydrofuran (PolyTHF or PTMEG), with the chemical formula HO-[(CH2)4O]n-H, is an important polyether glycol. It appears as a white waxy solid or colorless viscous liquid, depending on its molecular weight. It exhibits excellent flexibility, hydrolysis resistance, and chemical stability. As a key raw material for producing polyurethane elastomers and Spandex fibers, it is widely used in textiles, automotive, medical, and other fields.

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Product Parameters

Product Name (English)	Polytetrahydrofuran (PolyTHF)
CAS No.	25190-06-1
Physical Properties	- A white waxy solid that turns into a transparent liquid when the temperature exceeds room temperature. - Soluble in alcohols, ketones, esters; insoluble in water - Low glass transition temperature, excellent flexibility - High molecular weight variety with good mechanical properties
Applications	- Primary raw material for polyurethane elastomers and Spandex fibers - Soft segment for thermoplastic polyurethane (TPU) - Used in synthetic leather and adhesive formulations - Chemical intermediate for specialty polymers
Specifications	Molecular Weight: 1000, 2000 (customized) Hydroxyl Value: 56-112 mg KOH/g Acid Value: ≤0.05 mg KOH/g Water Content: ≤0.03% Color (APHA): ≤50
Packaging	200 KG/drum (stainless steel with nitrogen protection)

Basic Properties

Physical Properties:
· Appearance: White waxy solid (high MW) or colorless viscous liquid (low MW)
· Melting Point: 20-35°C (depending on molecular weight)
· Density: 0.97-0.98 g/cm³ (20°C)
· Solubility: Soluble in alcohols, ketones, esters; insoluble in water
· Viscosity: 200-5000 mPa·s (40°C, depending on molecular weight)
· Glass Transition Temperature: -76°C
Chemical Properties:
· Terminal primary hydroxyl groups with high reactivity
· Good hydrolysis resistance and excellent chemical stability
· Reacts with isocyanates to form polyurethanes
· Resistant to microbial attack
· May degrade under strong oxidizing conditions

Main Applications

Spandex Fiber: Primary raw material for producing elastic Spandex fibers (e.g., Lycra)
Polyurethane Elastomers: Used in thermoplastic polyurethane (TPU), cast polyurethane (CPU)
Synthetic Leather: Soft segment component for polyurethane synthetic leather
Adhesives: Used in high-performance polyurethane adhesives
Engineering Plastics: Toughening modifier for engineering plastics
Other Applications: Used in medical devices, sports equipment and other specialty products

Safety Precautions

Health Hazards:
· Causes mild eye and skin irritation
· Inhalation of dust or mist may cause respiratory discomfort
· Low toxicity at room temperature, but decomposition when heated may produce harmful substances
· Ingestion of large amounts may cause gastrointestinal discomfort
Handling Protection:
· Wear safety glasses and gloves during handling
· Ensure adequate ventilation in working area
· Avoid inhalation of dust or mist
· Avoid direct contact with skin and eyes
Storage & Transportation:
· Store in cool, dry, well-ventilated area
· Keep containers tightly closed to prevent moisture absorption and oxidation
· Recommended to store under nitrogen atmosphere
· Store separately from strong oxidizers
· Use stainless steel containers
Fire Fighting:
· Combustible material but with low flammability
· Use foam, dry powder or CO2 to extinguish fire
· Use water spray to cool exposed containers
· Firefighters should wear conventional protective equipment

Company Profile

Junteng Chemical is a professional chemical raw materials trading company dedicated to providing customers with one-stop procurement services. Through strict supplier, supply chain, and after-sales management, the company ensures that product quality, transportation, and use meet customer needs. Furthermore, the company's technical team offers customized solutions and support services free of charge.

The company has projects in the pharmaceutical, pesticide, petrochemical, construction, food additives, wastewater treatment, adhesives, inks, paints, coatings, plastic and rubber processing, detergent raw materials, fertilizer and textile mills, and more. Junteng Chemical sources products of stable and reliable quality, collaborating with domestic and international companies such as Luxi Group, Weiyuan Chemical, Qilu Petrochemical, Dongying Lihuayi, Yanshan Petrochemical, Sinopec, Shijiazhuang Refinery, Qingdao Petrochemical, Sailboat, Dow Chemical, BASF, South Korea, Taiwan, and Saudi Arabia. Our stable supply, superior product quality, and mature logistics have earned us a wide clientele. We look forward to collaborating with all of you for a mutually beneficial future.

Company advantages

One-Stop Procurement
Platform

We integrate resources across all productcategories, including organic solvents,resins and rubbers, and inorganicchemicals,and strictly control suppliers.supply chains, and after-sales processes toensure stable quality, efficienttransportation,and worry-free use,simplifying your procurement process.

Professional Team TechnicalEmpowerment

Equipped with an experienced technicalteam, we provide free personalizedsolutions and professional technicalsupport to customers in varlous industrie,such as pharmaceuticals, petrochemicals,coatings and inks, and sewage treatment,.helping you solve problems and improveefficiency.

Global supply ChainSecurity

We work with top domestic and foreignchemical giants such as Luxi Group, QiluPetrochemical, Sinopec, BASF of Germany,and Dow of the United States to establisha stable and reliable high-quality supplynetwork and a mature logistics system toensure timely and safe delivery of
products.

Deep Win-Win CooperationConcept

Adhering to the concept of "integrity.immediate action, professionalism,innovation and win-win" and taking"customer success and altruism" as ourmission, we are committed to establishinglong-term strategic partnerships andcreating a better future through excellentproducts and services.