Desmodur® W
Monomeric cycloaliphatic diisocyanate.In the manufacture of polyisocyanates and polyurethanes.
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About
Product Types
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Material
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General Characterization
Monomeric cycloaliphatic diisocyanate.
In the manufacture of polyisocyanates and polyurethanes.
In the manufacture of polyisocyanates and polyurethanes.
Storage Conditions
- Storage in original sealed Covestro container.
- Recommended storage temperature: 0 - 30 °C.
- Protect from moisture, heat and foreign material.
General information: The product is sensitive to moisture. Storage at higher temperatures will result in increase of color and viscosity. Storage at temperatures of approx. 25 °C and below can result in crystallization and appropriate settling at the bottom. This solidification is reversible by briefly heating the product without adversely affecting the quality of the product. Our recommendation in that case is warming the product to 40 - 50°C and homogenization before use.
- Recommended storage temperature: 0 - 30 °C.
- Protect from moisture, heat and foreign material.
General information: The product is sensitive to moisture. Storage at higher temperatures will result in increase of color and viscosity. Storage at temperatures of approx. 25 °C and below can result in crystallization and appropriate settling at the bottom. This solidification is reversible by briefly heating the product without adversely affecting the quality of the product. Our recommendation in that case is warming the product to 40 - 50°C and homogenization before use.
Sampling
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Packaging Type
No data available
Technical Properties & Datasheets
Characteristics
| Property Name | Test Method | Unit | Value |
|---|---|---|---|
| Viscosity at 25 °C | DIN EN ISO 3219/A.3 | mPa*s | approx. 30 |
| Flash point | DIN EN 22 719 | °C | approx. 200 |
| Vapor pressure at 25 °C | hPa | approx. 2.1 · 10^-5 | |
| Total chlorides | mg/kg | ≤ 1,000 | |
| Start of crystallization | °C | approx. 25 | |
| Density at 20 °C | DIN EN ISO 2811 | g/ml | approx. 1.07 |
Specifications
| Property Name | Test Method | Unit | Value |
|---|---|---|---|
| NCO content (calculated from GC) | internal method | % | ≥ 31.8 |
| Hydrolyzable chlorides | internal method | mg/kg | ≤ 10 |
| Color value (Hazen) | DIN EN 1557 | ≤ 30 | |
| Acidity | internal method | mg/kg | ≤ 10 |
| Assay (GC) | internal method | % | ≥ 99.5 |
Downloads
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Technical Data Sheet
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Safety Data SheetNo direct download available, please visit www.productsafetyfirst.covestro.com
