4,4'-Methylenediphenyl diisocyanate, oligomers

Viscosity

Link to relevant study record(s)

Reference

Endpoint:

viscosity

Type of information:

experimental study

Adequacy of study:

key study

Study period:

01/03/2019 - 10/05/2019

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Test Guideline 114 (Viscosity of Liquids)

Qualifier:

according to guideline

Guideline:

ISO 3104 (Petroleum products - Transparent and opaque liquids - Determination of kinematic viscosity and calculation of dynamic viscosity)

Version / remarks:

1994

GLP compliance:

yes (incl. QA statement)

Type of method:

capillary viscometer (static)

Standard covering the apparatus used:

CIPAC method MT 22 1994, reprinted 2007

Specific details on test material used for the study:

Test Item Name: 4,4’-MDI homopolymer (EC Number: 500-040-3)
Substance Name: 4,4'-Methylenediphenyl diisocyanate, oligomers
Description: Pale yellow liquid
Batch/ Lot Number: 01482
Expiry date: 15/05/2019 at RT

Key result

Temp.:

20°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

ca. 1 354

Remarks on result:

other: mean of 2 runs

Key result

Temp.:

40°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

ca. 222.1

Remarks on result:

other: mean of 2 runs

Conclusions:

Viscosity of Transparent and Opaque Liquids:
At 20°C (mean of 2 runs) 1354 mm2.s-1
At 40°C (mean of 2 runs) 222.1 mm2.s-1

Executive summary:

 

Test performed to determine the viscosity of a fluid.
The test is conducted in accordance with ISO 3104:1994 and OECD Test Guideline 114.

 

Viscosity of Transparent and Opaque Liquids:

At 20°C (mean of 2 runs) 1354 mm2.s-1

At 40°C (mean of 2 runs) 222.1 mm2.s-1

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) 1354 mm2.s-1; at 40°C (mean of 2 runs) 222.1 mm2.s-1

Key value for chemical safety assessment

Viscosity:

1 354 mm²/s (static)

at the temperature of:

20 °C