TOLUENE DIISOCYANATE- ▸ Flexible PU foam: Primary isocyanate for slabstock and molded flexible foams.
- ▸ PU elastomers: Intermediate for polyurethane elastomer systems.
- ▸ Coatings: Building block for polyurethane coating chemistry.
- ▸ Crosslinking: Used as a crosslinking agent (e.g., for nylon 6).
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
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Transport classification per the UN Model Regulations / 49 CFR 172.101 Hazardous Materials Table. Confirm against the grade-specific SDS (Section 14) before shipping.
⚠ WARNING: This product can expose you to Toluene Diisocyanate, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
Toluene diisocyanate (CAS 26471-62-5, the mixed 2,4-/2,6-isomer grade) is the principal aromatic diisocyanate used to make flexible polyurethane foam. Industry references record its use as a chemical intermediate for polyurethane foams, coatings, and elastomers. Supplied as a bulk isocyanate for foam and polyurethane manufacture.
Regulatory & registration requirements
- TSCA (US):
- REACH (EU):
- EC number: 247-722-4
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
Regulatory restriction status
Toluene Diisocyanate (TDI) (CAS 26471-62-5) appears on the regulatory list(s) below. This is public regulatory information about the substance — not a statement about any specific supplier’s material, and not a safety claim. Confirm the current status for your jurisdiction and intended use.
- California Proposition 65: listed for cancer, listed 1 Oct 1989. A California Proposition 65 warning applies (see the warning above).
Sources: ECHA Candidate List / Annex XIV / Annex XVII (echa.europa.eu); U.S. EPA TSCA; UN Stockholm Convention / EU POPs Regulation; California OEHHA Proposition 65 list. Retrieved 2026-07-13.
Solutions Using This Product
Process-solution guides on this site that specify this chemistry:
- Polyurethane Polyols (Polyether & Polyester) (Industrial Manufacturing)
- Epoxy & Polyurethane Raw Materials (Industrial Manufacturing)
Frequently Asked Questions
What is toluene diisocyanate used for?
Toluene diisocyanate (TDI, CAS 26471-62-5, the mixed 2,4-/2,6-isomer grade) is the principal aromatic diisocyanate for making flexible polyurethane foam, both slabstock and molded. It is also a building block for PU elastomers and coatings and is used as a crosslinking agent. We supply it as a bulk isocyanate for foam and polyurethane manufacture.
What is another name for toluene diisocyanate?
Toluene diisocyanate is commonly abbreviated TDI and is also referred to as methylphenylene diisocyanate or toluene-2,4-/2,6-diisocyanate, referencing the mixed-isomer grade (CAS 26471-62-5). The pure 2,4-isomer carries a separate CAS number; confirm the isomer grade on the CoA.
How does toluene diisocyanate react with water?
TDI reacts with water, evolving carbon dioxide and forming ureas/polyureas; this moisture sensitivity is why it must be kept dry and blanketed. Handling, storage, and reactivity details are specified on the SDS, which should be reviewed before use.
What is the HS code for toluene diisocyanate?
TDI classifies under HS 2929.10 (isocyanates). Confirm the destination-country tariff line with your broker. We provide commercial and shipping documentation to support customs clearance.
What is the price of bulk TDI and how is it packaged?
TDI pricing is quote-based and depends on isomer grade, volume, and packaging (drums, totes, bulk). Request a bulk quote with your target volume and delivery location for current pricing, CoA, and SDS.
What is the REACH and TSCA regulatory status of Toluene Diisocyanate (TDI)?
Toluene Diisocyanate (TDI) (CAS 26471-62-5) is subject to U.S. TSCA Inventory requirements; supplying it into the EU requires valid REACH registration ((EC) No 1907/2006). RawSource cannot verify a third-party supplier's registrations — buyers should require documented TSCA and REACH compliance for their jurisdiction and volume (EC 247-722-4).