| Customization: | Available |
|---|---|
| CAS No.: | 9016-87-9 |
| Formula: | CH2(C6h4nco)2 |
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
General Properties and Applications
44V20L is a liquid, dark brown polymeric isocyanate based MDI with isomers and homologues of higher functionality. It is used in conjunction with polyols to produce polyurethane.
Sampling
Exposure to moisture must be prevented when taking product samples
There are more specifications. Please contact me to send the catalogue.
| Property | Value | Unit of measurement | Method |
|---|---|---|---|
| NCO content | 30.5 - 32.5 | % by wt. | MDI-01-01 |
| Viscosity 25 °C*) | 160 - 240 | mPa·s | MDI-01-02 |
| Acidity | max. 200 | ppm HCl | MDI-01-03 |
| Property | Value | Unit of measurement | Method |
|---|---|---|---|
| Density 20 °C | approx. 1.23 | g/cm³ | DIN 51757 |
| Phenylisocyanate content | max. 50 | ppm | MDI-01-09 |
| Coefficient of thermal expansion | 6.59 × 10-4 | K-1 | |
| Specific heat (cp) | approx. 1.51 | kJ/kgK |
Storage
Recommended storage temperature: + 10 to + 30 °C (in exceptional cases up to 50°C)
Storage stability (ex works): 6 months if stored in moisture-tight drums
44V20 L may undergo partial crystallization at temperatures below 0 °C. The product can, however, be brought back into the liquid state by heating the entire contents of the drum for a short time to a maximum of 70 °C, although this may lead to an increase in the solids content.
Drums including empty ones should always be kept tightly sealed. The product should never be allowed to come into contact with water, which reacts with 44V20 L to form polyureas and carbon dioxide.
Contact with water in any form (damp drums, solvents containing water, moist air) must be prevented not only during storage, but also when removing material from drums and during processing.
){kind=link}