DESMODUR® VP.PU 0118 LIQUID
DESMODUR VP.PU 0118 LIQUID is a monomeric diphenylmethane -4,4'-diisocyanate with a molecular weight of 250 g/mol. At room temperature the product takes the form of a white to light yellow solid. It can be used in conjunction with polyols for the production of polyurethane products.
About
Product Types
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Material
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General Characterization
DESMODUR VP.PU 0118 LIQUID is a monomeric diphenylmethane
-4,4'-diisocyanate with a molecular weight of 250 g/mol. At room temperature the product takes the form of a white to light yellow solid.
It can be used in conjunction with polyols for the production of polyurethane products.
Storage Conditions
Protect from moisture, heat and foreign material.
Covestro represents that, for a period of ≤ 3 weeks following the day of shipment as stated in the respective delivery documents, the product will meet the values set forth in section "specification" above 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. However, prior to using said product, Covestro recommends to test such a product if it still meets the specifications. 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 after the period.
Like all isocyanates, DESMODUR VP.PU 0118 LIQUID is sensitive to moisture and reacts with water to form insoluble urea derivatives and carbon dioxide. The generation of carbon dioxide in sealed containers can lead to a dangerous build-up of pressure. Contact with air, especially if accompanied by simultaneous exposure to light, accelerates yellowing of
DESMODUR VP.PU 0118 LIQUID. It is therefore advisable to store liquid DESMODUR VP.PU 0118 LIQUID under dry nitrogen. Yellowing generally has no effect on the product's processing behaviour, however.
DESMODUR VP.PU 0118 LIQUID is sensitive to heat and likely to dimerization (uretdione formation).
The solid product dimerizes more rapidly at room temperature than the liquid product stored at 43 °C. Crystallized DESMODUR VP.PU 0118 LIQUID should therefore be stored at temperatures below 5 °C and melted rapidly but gently before use. Although the rate of dimerization decreases as the temperature drops, storag ... text to long! (max 2000 characters)
Sampling
Packaging Type
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Technical Properties & Datasheets
Characteristics
| Property Name | Test Method | Unit | Value |
|---|---|---|---|
| Density at 40 °C | DIN 51757 | g/cm³ | 1.19 |
| Phenylisocyanate-content | MDI-01-09 | ppm | ≤ 10 |
| NCO-content (theoretical) | % by wt. | 33.6 | |
| Purity ( mol. wt. 250 ) | MDI-01-01 | % by wt. | ≥ 99.5 |
| Specific heat (cp) | kJ/kg*K | approx. 1.39 | |
| Freezing point | MDI-01-17 | °C | ≥ 38.4 |
| Viscosity at 40 °C | MDI-01-02 | mPa*s | 4.1 |
| Heat of fusion | J/g | approx. 102 |
Specifications
| Property Name | Test Method | Unit | Value |
|---|---|---|---|
| 2,4'-isomer content | MDI-01-06 | % by wt. | max. 1.8 |
| 4,4'-isomer content | MDI-01-06 | % by wt. | min. 98.2 |
| Hydrolysable chlorine | MDI-01-04 | ppm | max. 50 |
| Uretdione (dimer) content * | MDI-01-08 | % by wt. | max. 0.1 |
Downloads
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Technical Data Sheet
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Safety Data SheetNo direct download available, please visit www.productsafetyfirst.covestro.com
