Toluene Diisocyanate (TDI) CAS 26471-62-5: Comprehensive Technical Guide
Table of Contents
1. Product Specifications & Comparative Analysis
| Parameter | TDI-80 (2,4-TDI) | TDI-20 (2,6-TDI) | Pure MDI |
|---|---|---|---|
| CAS Number | 26471-62-5 | 101-68-8 | |
| Molecular Formula | C9H6N2O2 | C15H10N2O2 | |
| Isomer Ratio | 80% 2,4-/20% 2,6- | 20% 2,4-/80% 2,6- | N/A |
| Viscosity @25°C (mPa·s) | 3.5-4.5 | 3.0-4.0 | 200-250 |
| NCO Content (%) | 48.3 ± 0.5 | 33.6 ± 0.3 | |
2. Industrial Applications & Functional Breakdown
Core Applications:
- Flexible Polyurethane Foam Production: Primary raw material for mattress (85% global consumption) and automotive seating (12% consumption)
- Coating Systems: High-performance polyurethane coatings with VOC content < 250g/L
- Adhesive Formulations: Fast-curing structural adhesives with bond strength > 5MPa
- Elastomer Engineering: Cast elastomers with Shore hardness A 70-95
3. Operational Protocols & Safety Guidelines
Critical Safety Parameters:
| Parameter | Value |
|---|---|
| Flash Point | 127°C (TCC) |
| Autoignition Temperature | 620°C |
| TLV-TWA | 0.005 ppm (ACGIH) |
| REACH Compliance | Annex XIV Authorization Required |
4. Verified Application Case Studies
Case Study 1: Automotive Interior Solutions
Client: Continental Automotive Seating Systems (Wolfsburg, Germany)
Solution: Custom TDI-based foam formulation achieving 35% density reduction while maintaining BS 5852 fire safety standards
Case Study 2: Industrial Flooring Systems
Client: Sika AG (Zurich, Switzerland)
Solution: Fast-cure polyurethane coating with 2-hour return-to-service time, achieving 9H pencil hardness
5. Procurement Strategy & Supplier Evaluation
Key Supplier Metrics:
| Parameter | Premium Grade | Industrial Grade |
|---|---|---|
| Purity Level | ≥99.7% | |
| Moisture Content | <0.03% | <0.07% |
Technical Consultation:
Contact our chemical engineers for formulation optimization:
- Email: info@vivalr.com
- Tel: (86) 15866781826
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