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Desmodur® CD-L

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  • MMDI
  • Aromatisches Polyisocyanat



Allgemeine Charakterisierung

Desmodur® CD-L is a modified isocyanate based on diphenylmethane-4,4'-diisocyanate.
Its main application is as the isocyanate component in the production of polyurethane foams, elastomers and adhesives.


- Storage in original sealed Covestro container.

- Recommended storage temperature: 20 - 25 °C.

- Protect from moisture, heat and foreign material.

General information: The product is moisture-sensitive and should therefore always be stored in tightly sealed original containers. Prolonged storage at temperatures above 25 °C results in a reduction in quality as the product becomes increasingly cloudy due to the deposition of low-solubility sediment (dimer formation). If the recommended storage temperature is exceeded for a long period (especially if the temperature of the product rises to above 50 °C), or if the recommended shelf life is exceeded, a chemical reaction may take place. In addition to a reduction in the NCO content and an increase in viscosity, carbon dioxide in particular may be generated. The resultant increase in pressure may cause the container to swell or burst. Storage at above 25 °C considerably shortens the shelf life. Storage at below 20 °C results in crystallization. The product should under no circumstances be stored in crystallized form as this will promote the formation of insoluble dimers and it will no longer be possible to melt the product completely.
Delivered product should be spot-checked for crystallization, and cooling to below 20 °C must be avoided. If the product has been transported or stored below 20 °C for a short time, the material must immediately be melted at 60 - 70 °C. The melting point and the time required for this should not be exceeded as this also significantly promotes dimer formation. The entire container contents must be melted and homogenized before the container is immediately sealed and cooled to the recommended storage temperature. There is no risk that quality will be affected should the product have crystallized briefly, but it can be expected that the shelf life will be reduced. The melted material should ... text to long! (max 2000 characters)


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Drums, IBCs, tank containers or road tankers

Technische Eigenschaften & Datenblätter

Name der Eigenschaft Prüfverfahren Einheit Wert
Viscosity (25 °C) MDI-01-02 mPa*s 20 - 50
Hydrolysable chlorine MDI-01-04 mg/kg max. 50
NCO content MDI-01-01 % 29.0 - 30.0

Name der Eigenschaft Prüfverfahren Einheit Wert
Flash point EG A.9 / DIN ISO 2719 °C > 250
Density at 25 °C EG A.3 / DIN 51 757 kg/l 1.21
Pour Point EG A.1 / DIN ISO 3016 °C - 27
Phenyl isocyanate content MDI-01-09 mg/kg max. 8
Vapor pressure at 20 °C (MDI) EG A.4 mbar 7


Technisches Datenblatt
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