• 0086-13656166310
  • info@blendpolyol.com
  • Mon - Fri: 8:00 - 17:30
Facebook-f Youtube Linkedin

Provide unlimited possibilities for your polyurethane one-stop solution

Toluene diisocyanate TDI-80/20 in iron drums
TDI-based flexible polyurethane foam mattress layers
High-resilience HR foam modern bubble sofas
Molded HR PU car seat foam cushion

Toluene Diisocyanate (TDI-80/20) | CAS 26471-62-5 Flexible Foam Isocyanate

Toluene Diisocyanate TDI-80/20 (CAS 26471-62-5), an 80:20 blend of 2,4- and 2,6-isomers. High-purity aromatic isocyanate (>=99.5%, NCO ~48.2%, APHA <=30) for flexible PU foam, mattresses, furniture & automotive seating, plus coatings, adhesives and elastomers. Drums or ISO tanks; COA & MSDS with every shipment.

Get a Free Quote

Toluene Diisocyanate (TDI-80/20, CAS 26471-62-5) is a high-purity aromatic isocyanate — an 80:20 blend of the 2,4- and 2,6-toluene diisocyanate isomers. As the workhorse "B-component" for flexible polyurethane foam, it reacts with polyols to make slabstock and moulded foam for furniture, mattresses and automotive seating, and is also used in coatings, adhesives, sealants and elastomers (CASE). It is a clear, colourless to pale-yellow liquid with a TDI content of ≥ 99.5% and an NCO content around 48.2%.

80/20
2,4-/2,6-
isomer ratio
≥ 99.5%
purity
(assay)
~48.2%
NCO
content
≤ 30
colour
(APHA)
174.16
molecular
weight

Key Features

High purity, high reactivity
≥ 99.5% TDI with ~48.2% NCO — fast, efficient reaction with polyols.
Standard 80/20 grade
The industry-standard 2,4-/2,6- isomer blend for flexible foam.
Low colour & acidity
APHA ≤ 30 and low hydrolysable chlorine for clean, consistent foam.
Versatile chemistry
Flexible foam plus coatings, adhesives, sealants and elastomers (CASE).
Consistent batches
Tight specification for repeatable foam density and physical properties.
Export-ready packaging
Supplied in sealed iron drums or ISO tanks for bulk export.

Applications

Toluene diisocyanate TDI-80/20 in iron drums
TDI in Iron Drums
TDI-based flexible polyurethane foam mattress layers
Mattress & Bedding Foam
Flexible polyurethane foam sofa cushions
Furniture & Sofa Cushions
Moulded flexible foam automotive seat
Automotive Seating

Primary use: flexible slabstock & moulded PU foam for furniture, mattresses, pillows and automotive seating. Also used in coatings, adhesives, sealants and elastomers (CASE). For rigid-foam and panel systems, see our MDI isocyanate.

Typical Specifications (TDI-80/20)

Property Typical Value
Appearance Clear, colourless to pale-yellow liquid
Assay (TDI content) ≥ 99.5%
Isomer ratio (2,4- : 2,6-) 80 : 20
NCO content 48.1–48.3% (theoretical 48.28%)
Colour (APHA / Pt-Co) ≤ 30
Acidity (as HCl) ≤ 0.005%
Hydrolysable chlorine ≤ 0.01%
Density (25 °C) ~1.22 g/cm³
Crystallisation (freezing) point ~11.5–14 °C
Boiling point ~251 °C
Flash point ~127 °C
Molecular weight 174.16 (C₉H₆N₂O₂)

CAS 26471-62-5 (mixed isomers). Typical commodity specifications for TDI-80/20; values for reference, not a binding specification. Batch COA supplied with every shipment.

TDI vs MDI — Which Isocyanate

  TDI (this) MDI
Best for Flexible foam, CASE Rigid foam, panels, elastomers
NCO content ~48.2% ~31.5% (pure MDI)
Volatility Higher (more volatile) Lower
Typical foam Slabstock & moulded flexible Rigid & semi-rigid

Packaging, Storage & Handling

Packaging
250 kg net iron drums or ISO tanks; palletised for export. Bulk on request.
Storage
Keep sealed under dry nitrogen in a cool, dry place. Reacts with water; protect from moisture and humidity. Avoid temperatures below the freezing point (re-melt gently & homogenise if crystallised).
Handling & Safety
TDI is a respiratory sensitiser. Use only with adequate ventilation, vapour control and full PPE; avoid inhalation, eye and skin contact. Follow the SDS — full MSDS supplied with every order.

The Complete PU System

Why BlendPolyol

10+ years in PU raw materials
Polyols and isocyanates supplied to foam makers worldwide.
One-stop system supply
TDI plus matched polyols, catalysts and surfactants.
COA with every batch
Consistent, tested quality and full documentation.
Global export & fast reply
Export to EU, Latin America, Asia and beyond — reply within 24 hours.

From Sample to Bulk Order

1. Share your need
Tell us your foam/CASE process and volume — we confirm grade and COA.
2. Sample & validate
Trial with TDS, MSDS and COA for your tests.
3. Scale to bulk
Order drums or ISO tanks with flexible MOQ and tiered lead times.

Frequently Asked Questions

What is TDI-80/20?An 80:20 blend of the 2,4- and 2,6-toluene diisocyanate isomers (CAS 26471-62-5) — the standard isocyanate for flexible polyurethane foam.
What is it used for?Mainly flexible slabstock and moulded foam for furniture, mattresses, pillows and automotive seating, plus coatings, adhesives, sealants and elastomers (CASE).
TDI or MDI — which should I use?TDI is the standard for flexible foam and many CASE applications; MDI suits rigid foam, sandwich panels and elastomers. We supply both and can advise on your process.
How is it shipped and stored?In sealed iron drums or ISO tanks under dry conditions. TDI reacts with moisture and is a respiratory sensitiser — follow the SDS and use proper ventilation and PPE.
Need TDI-80/20 for flexible foam or CASE?
Get a quote with COA & MSDS, plus matched polyols for a complete system.
✓ ≥ 99.5% purity✓ COA · MSDS with shipment✓ Reply within 24 h

Leave Your Message

Related products

Keep In Touch

Facebook-f Youtube Linkedin-in
Translate »

Submit Your Sourcing Request

Please complete the form below and our customer support team will be in touch with you shortly. Inquiries submitted through this form will receive priority processing over emails.