1. Product Introduction & Main Application
Arnico’s Toluene Diisocyanate (TDI) is a clear to pale yellow liquid with a pungent, penetrating odor, used as the primary raw material (isocyanate component) in the production of flexible polyurethane foams. By reacting with polyols, this substance creates the open, flexible cell structure that forms the basis for manufacturing mattresses, furniture, car seats, and cleaning sponges.
2. Technical Specifications
| Technical Parameter | Standard TDI 80/20 Grade | Specialty TDI 65/35 Grade | Unit |
|---|---|---|---|
| Purity (TDI, 2,4 & 2,6 Isomers) | ≥ 99.8 | ≥ 99.7 | % |
| Isomer Ratio (2,4- to 2,6-) | 80:20 ± 1 | 65:35 ± 1 | % |
| Total Acidity (as HCl) | ≤ 40 | ≤ 50 | ppm |
| Hydrolyzable Chlorine | ≤ 100 | ≤ 100 | ppm |
| Color (APHA) | ≤ 15 | ≤ 20 | Pt-Co |
| Density (25°C) | 1.22 – 1.23 | 1.22 – 1.23 | g/cm³ |
| Freezing Point | 12 – 14 | 5 – 8 | °C |
3. Features & Benefits
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Optimized Reactivity with Polyols: Creates an open-cell, breathable, and highly resilient foam structure, ideal for mattresses and furniture.
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Controlled Isomer Ratio: The TDI 80/20 is the industry gold standard for slabstock and molded foam, providing the perfect balance of reactivity and process stability.
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High Purity & Color Stability: The absence of color-forming and acidic impurities guarantees the quality and uniformity of the final foam.
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Application Flexibility: Suitable for use in both molded and slabstock foam production.
4. Industrial Applications
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Furniture & Mattresses: The production of hot and cold cure foam for orthopedic mattresses and comfortable sofas.
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Automotive Industry: The manufacture of seat cushions, headrests, and acoustic insulation inside the cabin.
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Coatings & Adhesives: The production of durable polyurethane coatings and strong adhesives.
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Cleaning Sponges: The magic melamine eraser sponge.
5. Safety & Handling
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MSDS (Material Safety Data Sheet): This substance is highly toxic, a severe respiratory and skin irritant, and a potent sensitizer (occupational asthma). The Arnico MSDS is mandatory and vital.
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Storage Conditions: Store exclusively in dry tanks under a blanket of dry, inert gas (nitrogen) and at a temperature of 20-30°C (to prevent freezing and dimerization), away from water and alkalis.
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Personal Protective Equipment (PPE): A Self-Contained Breathing Apparatus (SCBA), full solvent-resistant clothing (Tychem), Viton gloves, and sealed goggles are mandatory.
6. Quality Assurance & COA
Arnico TDI shipments are accompanied by a Certificate of Analysis (COA) detailing the isomer ratio and total acidity.
