N-[3-(dimethylamino)propyl]-N,N',N'-trimethylpropane-1,3-diamine

Viscosity

Link to relevant study record(s)

Reference

Endpoint:

viscosity

Type of information:

experimental study

Adequacy of study:

key study

Study period:

November 2015

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Test Guideline 114 (Viscosity of Liquids)

Deviations:

not specified

Principles of method if other than guideline:

In accordance with EU A4 Regulation (EC) No 440/2008, Annex, Official Journal of the European Union L142/1, viscosity was measured using a rotational viscometer (OECD Guidelines for The Testing of Chemicals, 114, May 12 1981). As per this guideline, the rotational viscometry test method is covered under ISO 3219:1993

GLP compliance:

not specified

Type of method:

rotational viscometer (dynamic)

Standard covering the apparatus used:

Viscosity was measured using the AR-G2 Rheometer (TA Instruments, New Castle, DE).

Specific details on test material used for the study:

Commercial Name Polycat 77 TM
Chemical Name Pentamethyldipropylenetriamine
Physical State liquid
CAS # 3855-32-1
EU # 223-362-3
Manufacturer Air Products and Chemicals, Inc.
Batch# / Lot # 1003336
Received on November 12, 2015
Tested on November 13, 2015

Key result

Temp.:

20°C

Parameter:

dynamic viscosity (in mPa s)

Value:

0.024

Key result

Temp.:

40°C

Parameter:

dynamic viscosity (in mPa s)

Value:

0.016

Average viscosity results for duplicate trials at each measured temperature are summarized in Table 1.

Table 1: Viscosity results compiled for the sample of Polycat 77. All reported viscosities are in units of
centipoise (1 cP = 0.01 P = 1 mPa s).

Temperature (°C)	Viscosity (cP)	Average Viscosity (cP)
20	2.40 ± 0.01 (Trial 1)	2.40
20	2.40 ± 0.01 (Trial 2)
40	1.57 ± 0.01 (Trial 1)	1.57
40	1.58 ± 0.01 (Trial 2)

Conclusions:

Viscosity of Polycat 77 is independent of shear rate at temperatures of 20°C and 40°C, the material is a Newtonian fluid. Average viscosity is 0.024 mPa s at 20 C and 0.0157 mPa s at 40 C.

Executive summary:

In accordance with EU A4 Regulation (EC) No 440/2008, Annex, Official Journal of the European Union L142/1, viscosity was measured using a rotational viscometer (OECD Guidelines for The Testing of
Chemicals, 114, May 12 1981). As per this guideline, the rotational viscometry test method is covered under ISO 3219:1993.

Viscosity was measured using the AR-G2 Rheometer (TA Instruments, New Castle, DE). A 60 mm diameter parallel plate geometry was used. Temperature was controlled using a Peltier heating element.
A fresh sample was loaded for each trial measurement. After sample loading, the sample was allowed an equilibration time of 6 min at the experimental temperature before the shear rate sweep measurements.
Viscosities were measured at shear rates ranging from 1 to 100 s-1. Data points at lower shear rates (<6 s-1) are considered unreliable because of the low torque and are not included in the plots and average
viscosity calculations. Two trials were performed for each temperature analyzed. Viscosity was measured at 20°C and 40°C.

Figure 1 shows viscosity profiles of the sample as a function of shear rate at temperatures of 20°C and 40°C. Since the viscosity of the sample is independent of shear rate, the sample is a Newtonian fluid.

Description of key information

Viscosity of the pentamethyldipropylenetriamine is independent of shear rate at temperatures of 20°C and 40°C, the material is a Newtonian fluid. Average viscosity is 0.024 mPa s at 20 C and 0.0157 mPa s at 40 C.

Key value for chemical safety assessment

Viscosity:

0.024 mPa · s (dynamic)

at the temperature of:

20 °C