Diisopropyl adipate

Viscosity

Link to relevant study record(s)

Reference

Endpoint:

viscosity

Type of information:

experimental study

Adequacy of study:

key study

Study period:

02/08/2014 - 02/08/2014

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Justification for type of information:

Data is from experimental study report

Qualifier:

according to guideline

Guideline:

OECD Test Guideline 114 (Viscosity of Liquids)

Principles of method if other than guideline:

Measurement of resistance to flow using Redwood Viscometer No. 1.

GLP compliance:

no

Type of method:

other: Redwood Viscometer No. 1

Key result

Temp.:

20°C

Parameter:

dynamic viscosity (in mPa s)

Value:

20.287

Remarks on result:

other: No other details available

Key result

Temp.:

40°C

Parameter:

dynamic viscosity (in mPa s)

Value:

15.127

Remarks on result:

other: No other details available

Key result

Temp.:

20°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

21.242

Remarks on result:

other: No other details available

Key result

Temp.:

40°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

15.84

Remarks on result:

other: No other details available

CALCULATIONS:

ν=ct-----------------------------------------(i)

Where, ν= Kinematic viscosity

c= Viscometer constant

              t= time of flow in seconds (Redwood second)

 

For Redwood Viscometer- I, the values for the constants are as below:

 

Time of flow,t	C
40 to 85 seconds	0.264
85 to 2000	0.247

 

ν= η/ρ------------------------------ (ii)

Where, ν= Kinematic viscosity

              η= Dynamic viscosity

               ρ= Density of fluid

 

 

1.      Calculation of Kinematic Viscosities:

 

For Test Temperature at 20⁰C

ν=ct

 = 0.247x86

 = 21.242mm2/s

For Test Temperature at 40⁰C

ν=ct

                = 0.264x60

                = 15.84mm2/s

 

2.      Calculation of Dynamic Viscosities:

 

For Test Temperature at 20⁰C

               ν= η/ρ

               21.242= η/0.955

               η = 21.242x0.955

                 = 20.287mPa.S

 

For Test Temperature at 40⁰C

               ν= η/ρ

               ν= η/ρ

               15.84= η/0.955

               η = 15.84x0.955

                 = 15.127mPa.S

 

Result:

 

Sr. No.	Temperature of Sample	Time taken to fill the 50 ml of flask in ‘seconds’ (Mean value)	Kinematic Viscosity in mm2/s	Density in gm/cc	Dynamic (or) Absolute Viscosity mPa.S
1.	20^0C	86 sec	21.242 mm2/s	0.955	20.287mPa.S
2.	40^0C	60 sec	15.84 mm2/s	0.955	15.127mPa.S

 

Conclusions:

Dynamic viscosity (calculated) of Test substance determined at 20°C and 40°C is 20.287mPa.S and 15.127mPa.S, respectively and Kinematic viscosity (experimental) ofTest substance determined at 20°C and 40°C is 21.242 mm2/s and 15.84mm2/s, respectively.

Executive summary:

The viscosity determination of test substance was done as per the test guideline OECD 114. The method followed was according to Redwood Viscometer No. 1. Kinematic viscosity (experimental) of test substance at 20°C and 40°C 21.242 mm²/s and 15.84 mm²/s, respectively. Dynamic viscosity (calculated) of test substance at 20°C and 40°C are 20.287mPa.S and 15.127 mPa.S, respectively.

Description of key information

The viscosity determination of test substance was done as per the test guideline OECD 114. The method followed was according to Redwood Viscometer No. 1. Kinematic viscosity (experimental) of test substance at 20°C and 40°C 21.242 mm²/s and 15.84 mm²/s, respectively. Dynamic viscosity (calculated) of test substance at 20°C and 40°C are 20.287mPa.S and 15.127 mPa.S, respectively.

Key value for chemical safety assessment

Viscosity:

20.287 mPa · s (dynamic)

at the temperature of:

20 °C

Additional information

The viscosity determination of test substance was done as per the test guideline OECD 114. The method followed was according to Redwood Viscometer No. 1. Kinematic viscosity (experimental) of test substance at 20°C and 40°C 21.242 mm²/s and 15.84 mm²/s, respectively. Dynamic viscosity (calculated) of test substance at 20°C and 40°C are 20.287mPa.S and 15.127 mPa.S, respectively.

Also from other experimental study report, viscosity of test chemical was determined to be 12.255 mPa s at 35 deg C.