Desmodur® N 75A BA

Aliphatic polyisocyanate (HDI biuret). As the hardener component for lightfast polyurethane coating systems.

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General Characterization

Desmodur N 75A BA is an aliphatic polyisocyanate (HDI biuret).
It is suitable for use as the hardener component for lightfast polyurethane coating systems.

Storage Conditions

Desmodur N 75A 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 5º-25ºC.


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Technical Properties & Datasheets


Property Name Test Method Unit Value
Viscosity at 23°C mPa∙s approx. 160
Flash point °C approx. 35
Density at 20^oC g/ml approx. 1.07
Equivalent weight approx. 255


Property Name Test Method Unit Value
Non-volatile content (0.1 g / 60 min / 105^oC) % 75 ± 1
Hazen color value ≤ 60
Viscosity at 25°C mPa∙s 150 ± 60
Monomeric HDI % ≤ 0.5
NCO content % 16.5 ± 0.3


Technical Data Sheet
Safety Data Sheet
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