Baymidur K88 is a low-viscous, dark-brown mixture of dimethylmethane-4,4' diisocyanate (MDI) with isomers and homologues of higher functionality.

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Product Types

  • MDI
  • Aromatic polyisocyanate


No data available

General Characterization

BAYMIDUR K 88 is a low-viscous, dark-brown mixture of diphenylmethane- 4,4'-diisocyanate (MDI) with isomers and homologues of higher functionality.

It can be used in conjunction with polyols for the production of polyurethane products.

Storage Conditions

Storage in original sealed Covestro container.
Recommended storage temperature: 10 – 30°C
Protect from moisture, heat and foreign material.

Covestro represents that, for a period of 6 months following the day of shipment as stated in the respective delivery documents, the product will meet the specifications or values set forth in section "properties" above, whatever is applicable, provided that the product is stored in full compliance with the storage conditions and is otherwise handled appropriately.

The lapse of this period does not necessarily mean that the product no longer meets specifications or the set values. However, prior to using said product, Covestro recommends to test such a product if it still meets the specifications of the set values. Covestro does not make any representation regarding the product after the period and Covestro shall not be responsible or liable in any way for the product failing to meet specifications or the set values after the period.


Moisture access should be prevented when taking product samples.

Packaging Type

No data available

Technical Properties & Datasheets


Property Name Test Method Unit Value
Density at 25°C DIN 51757 g/cm³ 1.23


Property Name Test Method Unit Value
NCO content MDI-01-01 % by wt. 31.0 - 32.0
Viscosity at 25°C*) MDI-01-02 mPa*s 70 - 110
Acidity MDI-01-03 ppm HCI max. 1000


Technical Data Sheet
Safety Data Sheet
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