East Harbour Group is an established HTPB supplier, delivering Hydroxyl-Terminated Polybutadiene to industrial and aerospace customers worldwide. Hydroxyl-Terminated Polybutadiene (HTPB, CAS 69102-90-5) is an oligomer of butadiene terminated at each end with a hydroxyl functional group, which reacts with isocyanates to form polyurethane polymers. HTPB is a translucent liquid, similar in colour to wax paper and in viscosity to corn syrup. It is not a single pure compound but a mixture, produced to each customer's specific requirements, so its physical and chemical properties vary by grade rather than following one fixed set of constants. As a global supplier of hydroxyl-terminated polybutadiene, East Harbour Group works with customers to source the correct grade for their application, backed by full technical documentation and responsive, competitively priced quotes.
| CAS Number: | 69102-90-5 |
| UN Number: | None |
| Hazard Class: | None |
| Packing Group: | None |
What is the CAS Number of Hydroxyl Terminated Polybutadiene?
The CAS number of Hydroxyl-Terminated Polybutadiene is 69102-90-5, with EINECS number 614-925-3. This identifier is used to recognise the substance across chemical databases and regulatory systems worldwide.
What is the UN Number of Hydroxyl Terminated Polybutadiene?
Hydroxyl-Terminated Polybutadiene does not have a UN number. It is not classified as dangerous goods for transport under ADR/RID (road), IMDG (sea) or IATA (air).
What is the Hazard Class and packing group of Hydroxyl Terminated Polybutadiene?
Hydroxyl-Terminated Polybutadiene is not classified as a hazardous substance or mixture under Regulation (EC) No. 1272/2008, and therefore has no assigned Hazard Class or Packing Group. This is a genuine logistical advantage for HTPB buyers compared with many other specialty and propellant-related chemicals, simplifying storage, handling and transport documentation.
Why Partner with East Harbour Group as Your HTPB Supplier?
Sourcing hydroxyl-terminated polybutadiene demands a supplier who understands that HTPB is not a single fixed-specification chemical, but a family of grades produced to precise customer requirements. At East Harbour Group, we combine technical understanding with a dependable global supply network.
- Grade flexibility: HTPB is produced to customer specification rather than one fixed standard – we work with you to source the correct viscosity, hydroxyl number and functionality for your application.
- Established global reach: as an international HTPB supplier, we support industrial and aerospace customers across the UK, Europe, Asia and other international markets, coordinating efficient delivery by road, sea or air.
- Supply chain security: our established supplier network and proactive sourcing strategy help protect your production schedule against disruption in HTPB supply.
- Non-hazardous transport status: HTPB is not classified as dangerous goods, which simplifies logistics, documentation and storage compared with many other propellant-related chemicals.
- Compliance and traceability: our supply chain and warehousing operations are accredited by UKWA, BIFA and FTA, with full technical documentation and batch traceability provided with every order.
HTPB Grades and Typical Specification
Because HTPB is produced to customer requirements rather than one universal specification, East Harbour Group works with each buyer to confirm the grade needed for their application. As a guide, a typical commercial reference grade carries the following properties:
- Viscosity: approx. 8,000 mPa·s @ 23°C
- Hydroxyl Number: approx. 47.1 mg KOH/g
- Hydroxyl Functionality: 2.4–2.6
- Molecular Weight (Mn): approx. 2,800
- Polydispersity (Mw/Mn): approx. 2.5
- Specific Gravity @ 23°C: approx. 0.901
- Glass Transition Temperature (Tg): approx. -75°C
Exact figures vary by grade and batch – contact our team with your target viscosity, hydroxyl number or functionality and we will confirm availability and specification documentation.
Core Applications of Hydroxyl-Terminated Polybutadiene
Polyurethane Elastomers and Industrial Products
HTPB reacts with isocyanates to form polyurethane polymers used across a wide range of everyday and industrial products – from flexible materials such as spandex to tough, durable components such as roller-coaster wheels, cast elastomers, seals and coatings.
Aerospace and Solid Rocket Propellant Binders
HTPB is widely used as a binder in solid composite rocket propellants, supporting civil and government space programmes worldwide, including launches by agencies such as JAXA and ISRO. East Harbour Group supplies HTPB to legitimate aerospace and propellant manufacturing customers.
Adhesives, Sealants and Coatings
The liquid, low-viscosity nature of HTPB before curing makes it suitable as a base resin in specialist adhesives, sealants and protective coatings requiring flexibility and weather resistance once cured.
Packaging & Global Delivery
East Harbour Group manages the full logistics process for HTPB, coordinating road, sea and air freight to suit your delivery schedule.
Available Packaging Options
- Bulk: up to 20 tonnes
- One-way containers: 1,000 kg
Storage & Shelf Life
Stored in its original, unopened container under suitable conditions, HTPB typically maintains stability for at least one year from the date of purchase.
Physical properties of Hydroxyl Terminated Polybutadiene (HTPB)
Physical State:
No information available
Appearance:
No information available
Odor:
No information available
Odor Threshold:
No information available
pH:
No information available
Melting Point / Range:
No information available
Boiling Point / Range:
No information available
Molecular Formula:
No information available
Molecular Weight:
No information available
FAQs
HTPB pricing is quote-based rather than fixed, because it is produced to customer specification – grade, viscosity, hydroxyl number and order volume all affect the final price. Our East Harbour Group team provides tailored HTPB quotes based on your required grade, quantity and delivery location, so your supply chain and logistics are optimised from the outset. Contact our sales team with your specific requirements and we will do our best to accommodate them.
Yes. Whether in Europe, Asia or elsewhere, East Harbour Group has the logistical expertise to deliver HTPB promptly and within budget. As HTPB is not classified as dangerous goods, shipping is more straightforward than for many other specialty chemicals. If you need shipping for Hydroxyl-Terminated Polybutadiene and are unsure of your logistics options, contact us today.
No. Hydroxyl-Terminated Polybutadiene is not classified as a hazardous substance under Regulation (EC) No. 1272/2008, and is not classified as dangerous goods for road, sea or air transport. This makes it more straightforward to store, handle and ship than many other specialty and propellant-related chemicals.
Because HTPB is produced to customer requirements, East Harbour Group works with each buyer to confirm the correct grade for their application. As a reference point, our typical commercial grade has a viscosity of approximately 8,000 mPa·s @ 23°C, a hydroxyl number of approximately 47.1 mg KOH/g and hydroxyl functionality of 2.4–2.6. Contact our sales team to discuss your target specification.
Stored in its original, unopened container under suitable conditions, HTPB typically maintains stability for at least one year from the date of purchase. Contact our team for specific storage guidance for your order.
HTPB is used to create a wide range of polyurethane products, from flexible materials such as spandex to durable components such as roller-coaster wheels, cast elastomers, seals, coatings and adhesives. It is also widely used as a binder in solid rocket propellant, supporting civil and government space programmes worldwide, including launches by agencies such as JAXA and ISRO.
East Harbour Group is an established HTPB supplier based in the UK, delivering Hydroxyl-Terminated Polybutadiene worldwide via multi-modal logistics – road, sea and air. Our distribution network supports industrial and aerospace customers across the UK, Europe, Asia and beyond, with full technical documentation and UKWA, BIFA and FTA accreditation throughout the supply chain.
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