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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

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REACH

1,1'-Methylenebis(4-isocyanatobenzene) and 1,1'-methylenebis(4-isocyanatobenzene) homopolymer and their reaction products with [(methylethylene)bis(oxy)]dipropanol and butane-1,3-diol and propane-1,2-diol

EC number: 701-393-8 | CAS number: -

Life Cycle description
Uses advised against

Physical & Chemical properties

Viscosity

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Administrative data

Link to relevant study record(s)

Description of key information

All substances of the MDI category except the monomeric MDI substances are liquid at room temperature. The kinematic viscosities are broadly consistent due to the presence of a relatively high concentration of mMDI. All the other substances of the MDI category are liquid at room temperature. The kinematic viscosities are broadly consistent due to the presence of a relatively high concentration of mMDI. A study was performed at Chilworth (2009) however this study should be disregarded. A new study to determine the viscosity of the substance was performed at Dekra (2019). The test is conducted in accordance with ISO 3104:1994 and OECD Test Guideline 114 and gave the following results:

At 20°C (mean of 2 runs) 1636 Cst; at 40°C (mean of 2 runs) 229 Cst

Key value for chemical safety assessment

Viscosity:: 1 636 mm²/s (static)
at the temperature of:: 20 °C

Additional information

Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.