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TDI 80/20

Toluene diisocyanate, 80:20 isomer ratio — the standard isocyanate for flexible foam.

Also known as: Toluene diisocyanate · TDI-80 · Tolylene 2,4-diisocyanate (80 %)

CAS number
26471-62-5
Formula
C₉H₆N₂O₂
HS code
2929.10
Appearance
Clear, colourless to pale yellow liquid

TDI 80/20 — Typical specification

Property Typical value Unit Method
Assay (total TDI) ≥ 99.5 % Gas chromatography
Isomer ratio 2,4- / 2,6- 80 : 20 ± 1 ratio Gas chromatography
NCO content 48.0–48.5 % ASTM D5155
Molecular weight 174.16 g/mol —
Acidity ≤ 0.005 % as HCl ASTM D4667
Hydrolysable chlorine ≤ 0.010 % ASTM D4663
Colour ≤ 30 APHA ASTM D1209
Density 1.21–1.22 g/cm³ @25°C ASTM D4052
Boiling point ≈ 251 °C —
Solidification point 11.5–14 °C —

Values shown are typical and indicative only. Actual figures vary by grade and producer — a batch-specific certificate of analysis is issued with every shipment and should be used for design and compliance purposes.

TDI 80/20 — Packaging & supply

  • 250 kg steel drum
  • 1,100–1,250 kg IBC tote
  • ISO tank

Shipping, transit times and Incoterms →

Packaging, in three dimensions

The supply units we quote this product in. Each is drawn to fill the frame, with its real dimensions shown underneath — switch between them to see what a quantity actually arrives as.

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Every drum weight we quote — 170, 200, 250 and 270 kg — ships in the same 200 litre steel drum. The difference is density, not size.

Molecular structure

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Heavy atoms and bonding are shown. Hydrogen positions are omitted rather than approximated, as in a skeletal formula.

TDI 80/20 — Applications

  • Flexible slabstock foam
  • Moulded flexible foam
  • Furniture cushioning
  • Mattress and bedding foam
  • PU coatings and adhesives

Industries served

Storage & handling

Store between 15 °C and 30 °C in sealed containers under dry nitrogen. Isocyanate reacts with water, releasing carbon dioxide and building pressure in closed vessels. Material solidifies below about 12 °C and must be reconditioned per producer instructions.

Documentation

Technical and safety documentation is issued on request, and always before order confirmation.

Technical Data Sheet (TDS)
Full specification and typical properties
Safety Data Sheet (SDS)
Handling, transport and hazard information
Certificate of Analysis (COA)
Issued per production batch on shipment
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