Dodecan-5-olide

Viscosity

Link to relevant study record(s)

Reference

Endpoint:

viscosity

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Justification for type of information:

Experimental test result performed using standard test guidelines

Qualifier:

according to guideline

Guideline:

OECD Test Guideline 114 (Viscosity of Liquids)

GLP compliance:

no

Type of method:

other: Redwood Viscometer No. 1

Standard covering the apparatus used:

Redwood Viscometer No. -1

Key result

Temp.:

20°C

Parameter:

dynamic viscosity (in mPa s)

Value:

20.532

Remarks on result:

other: Other details not known

Key result

Temp.:

40°C

Parameter:

dynamic viscosity (in mPa s)

Value:

19.364

Remarks on result:

other: Other details not known

Key result

Temp.:

20°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

21.637

Remarks on result:

other: Other details not known

Key result

Temp.:

40°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

20.407

Remarks on result:

other: Other details not known

Observation Table :              

Method Details		Observations		Remarks if, any
Guideline	OECD 114
Method of measurement	Redwood Viscometer No. -1
Principle of method	The flow of test item under gravity through a capillary using Redwood Viscometer No. 1
Temperature at which the testing was done	40°C and 60°C
Observations	Time taken to fill 50ml flask at 20°C in ‘Sec’ (Mean Value)		87.6 sec
	Time taken to fill 50ml at 40°C flask in ‘Sec’ (Mean Value)		77.3 sec
	Density of fluid in gm/cc		0.9489 gm/cc

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

1. Calculation of Kinematic Viscosities:

For Test Temperature at 20°C

ν=ct

= 87.6 × 0.247sec

= 21.6372mm²/sec

For Test Temperature at 40°C

ν=ct

= 77.3 × 0.264sec

= 20.4072 mm²/sec

2. Calculation of Dynamic Viscosities:

For Test Temperature at 20°C

ν= η/ρ

21.6372 =η 0.9489

η = 21.6372 x 0.9489

= 20.5315 mPa.S

For Test Temperature at 40°C

ν= η/ρ

20.4072 =η/ 0.9489

η = 20.4072 x 0.9489

= 19.3643 mPa.S

Conclusions:

The viscosity determination of Test item Dodecan-5-olide (CAS No. 713-95-1) was done as per the test guideline OECD 114 using Redwood Viscometer No. 1. Kinematic viscosity (experimental) of Test item at 20°C and 40°C was 21.6372 mm²/sec and 20.4072 mm²/s, respectively. Dynamic viscosity (calculated) of test item at 20°C and 40°C was 20.5315 mPa.S and 19.3643 mPa.S, respectively.

Executive summary:

The viscosity determination of test chemical was done as per the test guideline OECD 114 using Redwood Viscometer No. 1. Kinematic viscosity (experimental) of test chemical at 20°C and 40°C was determined to be 21.6372 mm²/sec and 20.4072 mm²/s, respectively and Dynamic viscosity (calculated) of test chemical at 20°C and 40°C was determined to be 20.5315 mPa.S and 19.3643 mPa.S, respectively.

Description of key information

The viscosity determination of test chemical was done as per the test guideline OECD 114 using Redwood Viscometer No. 1. Kinematic viscosity (experimental) of test chemical at 20°C and 40°C was determined to be 21.6372 mm²/sec and 20.4072 mm²/s, respectively and Dynamic viscosity (calculated) of test chemical at 20°C and 40°C was determined to be 20.5315 mPa.S and 19.3643 mPa.S, respectively.

Key value for chemical safety assessment

Viscosity:

21.637 mm²/s (static)

at the temperature of:

20 °C

Additional information

The viscosity determination of test chemical was done as per the test guideline OECD 114 using Redwood Viscometer No. 1. Kinematic viscosity (experimental) of test chemical at 20°C and 40°C was determined to be 21.6372 mm²/sec and 20.4072 mm²/s, respectively and Dynamic viscosity (calculated) of test chemical at 20°C and 40°C was determined to be 20.5315 mPa.S and 19.3643 mPa.S, respectively.