China (Mainland) 
quick details
- other names: mdi
- place of origin: germany
- type: polyurethane synthetic material
- brand name: covestro
- model number: desmodur 2460m
- purity: 99.5%
- product name: 2460m liquefied mdi
characterization
- monomeric diphenylmethane diisocyanate with high 2,4'-isomer content and stabilized against discoloration during storage.
- formulation of prepolymers for use in one- and two-component polyurethan coatings and adhesives and in related applications.
- desmodur® 2460 m is an isomeric mixture of monomeric diphenylmethane diisocyanate that is liquid at temperatures above 20 °c. storage and handling are greatly simplified compared to 4,4' isomer that is solid at room temperature.
-
form supplied:
solvent-free, colorless to yellowish liquid of low viscosity at temperatures above 20 °c, that crystallizes at lower temperatures.
product properties
| property | value | unit of measurement | method |
|
2,2'-mdi |
max. 0.8 |
% |
mdi-01-06 |
|
2,4'-mdi |
55.0 ± 5.0 |
% |
mdi-01-06 |
|
4,4' mdi |
min. 39.2 |
% |
mdi-01-06 |
|
hydrolysable chlorine |
max. 50 |
mg/kg |
mdi-01-04 |
|
nco content (theoretical) |
33.6 |
% |
by wt. |
|
density at 25 °c |
1.21 |
g/cm3 |
din 51 757 |
|
vapor pressure at 20 °c (mdi) |
< 10-5 |
hpa |
|
|
phenyl isocyanate content |
max. 10 |
ppm |
2011-0489801-95 |
|
viscosity at 25 °c |
12 ± 2 |
mpa·s |
2011-0313703-95 |
|
degree of purity (mg 250) |
min. 99.5 |
% by wt. |
2011-0248603-94 |
*these values provide general information and are not part of the product specification.
storage
-
- storage in original sealed bayer materialscience container.
- recommended storage temperature: 20 - 40 °c.
- protect from moisture, heat and foreign material.