Toluene Diisocyanate (TDI) Supplier
- Product Name:
- Toluene Diisocyanate
- Abbreviation:
- TDI
- CAS No.:
- 26471-62-5
- Molecular Formula:
- C₉H₆N₂O₂
- Common Grades:
- TDI 80/20 / TDI 65/35
- Appearance:
- Colorless to pale yellow liquid
TDI 80/20 and TDI 65/35 Supply
Toluene diisocyanate (TDI) is an aromatic diisocyanate used with polyols to produce polyurethane foams, elastomers, coatings and adhesives. YuXing reviews TDI 80/20 and TDI 65/35 inquiries according to the required isomer ratio, purity, application, packaging, quantity and destination port. Final acceptance follows the confirmed specification and batch COA.
For a comparable quotation, provide the current grade or supplier specification, intended polyurethane system, quantity, packaging and destination. Buyers can also review our polyether polyol page and polymers and rubber raw materials range.
Toluene Diisocyanate Specifications
| Item | Typical supply information |
|---|---|
| Product Name | Toluene Diisocyanate |
| Abbreviation | TDI |
| CAS No. | 26471-62-5 |
| Molecular Formula | C₉H₆N₂O₂ |
| Molecular Weight | 174.16 g/mol |
| Appearance | Colorless to pale yellow liquid |
| Purity | Typically ≥99.5%; confirm by grade and quotation |
| Common Grades | TDI 80/20 / TDI 65/35 |
| Water Interaction | Reacts with water; keep packaging sealed and dry |
| Typical Packaging | 250 kg drums / ISO tanks, subject to order confirmation |
TDI 80/20 vs TDI 65/35
| Grade | Nominal isomer basis | Selection guidance |
|---|---|---|
| TDI 80/20 | Approximately 80% 2,4-TDI and 20% 2,6-TDI | Common commercial grade for flexible polyurethane foam and other systems qualified for this isomer ratio. |
| TDI 65/35 | Approximately 65% 2,4-TDI and 35% 2,6-TDI | Different isomer balance and reaction profile; use only where the formulation and process are designed or validated for this grade. |
TDI Applications and RFQ Information
| Application | Selection focus | Information to submit |
|---|---|---|
| Flexible polyurethane foam | Isomer grade, formulation compatibility and processing response | Foam type, current TDI grade, density target and production process |
| Molded foam and elastomers | Reactivity, physical-property targets and cure conditions | Approved grade, polyol system, process and performance requirements |
| Coatings and adhesives | Formulation compatibility and controlled handling requirements | Existing formulation reference, application method and target properties |
Packaging, Storage and Document Review
TDI is moisture-sensitive and must be kept in compatible, tightly closed packaging under the storage conditions stated in the current SDS. Packaging, hazard classification, transport route and destination requirements must be reviewed before shipment. TDS, SDS/MSDS and batch COA availability is confirmed for the proposed grade and order; these files are not presented as universal specifications on this page.
For industrial sourcing and export coordination, see our chemical and industrial manufacturing service or submit the grade, quantity, packaging and destination through the contact page.
Frequently Asked Questions
What is toluene diisocyanate used for?
TDI is used with polyols to make flexible polyurethane foam and in qualified elastomer, coating and adhesive systems. The correct grade depends on the formulation, process and target properties.
What is the difference between TDI 80/20 and TDI 65/35?
The grades have different nominal ratios of 2,4-TDI to 2,6-TDI. TDI 80/20 is approximately 80:20, while TDI 65/35 is approximately 65:35. The different isomer balance affects reaction behavior, so substitution requires formulation review and testing.
Which TDI grade should I request?
Provide the current approved grade or supplier specification, polyol system, application, process conditions and target performance. Selection should follow the validated formulation rather than the product name alone.
What information is needed for a TDI quotation?
Submit TDI 80/20 or 65/35, required purity or specification, application, quantity, packaging, destination port and required documents.
Can TDS, SDS and batch COA be confirmed?
Document availability can be confirmed for the proposed grade, manufacturer, batch and order during quotation review. The current SDS must govern handling, storage and transport.
How should TDI be stored?
Keep TDI in compatible, tightly closed packaging and protect it from moisture. Follow the temperature, ventilation, segregation and handling requirements in the current SDS and applicable local regulations.
Product Information Notice
- The values shown are typical reference information and are not a guaranteed sales specification. Final specifications are subject to the confirmed product, grade and batch COA.
- Packaging, transport method and hazard classification must be confirmed according to product grade, order quantity, destination regulations, shipping route and the current SDS.
- TDS, SDS/MSDS and COA files are provided according to product, batch and destination requirements. Public documents should not be treated as final delivery documents unless issued for the current batch.
- This page is for procurement discussion and technical selection reference only. It does not replace safety, regulatory, process design or site operating advice. Users must follow local regulations and the latest SDS.
