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General Characterization

DESMODUR® SWN is a liquid, modified mixture of diphenylmethane-4,4'-diisocyanate (MDI) with isomers and homologues of higher functionality. It can be used in combination with polyols for the production of polyurethanes.

Storage Conditions

Storage temperature: 15 - 30 °C
Shelf life: 6 months
Like all isocyanates, DESMODUR® SWN reacts with water and should therefore be protected against moisture. The product is also sensitive to frost and may undergo partial crystallisation if exposed to temperatures below 0°C.

Sampling

Moisture ingress should be prevented when taking product samples.

Packaging Type

Drums: approx. 240 kg; containers: approx 1100 kg

Technical Properties & Datasheets

Characteristics

Property Name Test Method Unit Value
Colour brown
Viscosity 25°C MDI-01-02 mPas approx. 70
Odour neutral, musty
Density 23°C calculated g/cm³ approx. 1.22

Specifications

Property Name Test Method Unit Value
NCO-content MDI-01-01 % by wt. 28.7 - 29.3
NCO-content MDI-01-01 % by wt. 28.7 - 29.3

Downloads

Technical Data Sheet
Safety Data Sheet
No direct download available, please visit www.productsafetyfirst.covestro.com

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