Desmodur® ultra N 3368 SN

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Product Types

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General Characterization

Desmodur ultra N 3368 SN is an aliphatic polyisocyanate (HDI trimer).
It is suitable for use as the hardener component for lightfast polyurethane coating systems.

Storage Conditions

Desmodur ultra N 3368 SN should be stored in tightly sealed original containers and protected from moisture, heat, and foreign materials. The product is sensitive to moisture. Storage at higher temperatures will result in increase of color and viscosity. Recommended storage temperature is 0º-30ºC.


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Technical Properties & Datasheets


Property Name Test Method Unit Value
Density at 20^oC g/ml approx. 1.06
Equivalent weight approx. 284
Viscosity at 25^oC mPa∙s approx. 50
Flash point °C approx. 49


Property Name Test Method Unit Value
Viscosity at 23^oC mPa∙s 55 ± 15
Hazen color value ≤ 40
Non-volatile content 2.2 g / 120 min / 100^oC % 68 ± 1
NCO content % 14.8 ± 0.3
Monomeric HDI % < 0.10


Technical Data Sheet
Safety Data Sheet
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