Desmodur® ultra N 3390 BA

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Product Types

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General Characterization

Desmodur ultra N 3390 BA 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 3390 BA 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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Packaging Type

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Technical Properties & Datasheets

Property Name Test Method Unit Value
Monomeric HDI % < 0.10
Viscosity at 23^oC mPa∙s 500 ± 150
Non-volatile content (2.2g / 120 min / 100^oC) % 90 ± 1
NCO content % 19.6 ± 0.3
Color value (Hazen) ≤ 40

Property Name Test Method Unit Value
Equivalent weight approx. 214
Density at 20^oC g/ml approx. 1.13
Flash point °C approx. 50
Viscosity at 25^oC mPa∙s approx. 450


Technical Data Sheet
Safety Data Sheet
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