Dodecan-1-ol, ethoxylated

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 OECD test guideline

Qualifier:

according to guideline

Guideline:

OECD Test Guideline 114 (Viscosity of Liquids)

GLP compliance:

no

Type of method:

other: Redwood Viscometer

Key result

Temp.:

20°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

102.159

Key result

Temp.:

40°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

29.961

Key result

Temp.:

20°C

Parameter:

dynamic viscosity (in mPa s)

Value:

92.546

Key result

Temp.:

40°C

Parameter:

dynamic viscosity (in mPa s)

Value:

27.142

Observation Table :              

Method Details	Observations	Remarks if, any
Guideline	OECD 114
Method of measurement	Redwood Viscometer No. -1
Principle of method	The flow of chemical under gravity through a capillary using Redwood Viscometer No. 1
Temperature at which the testing is done	20°C and 40°C
Observations	Time taken to fill 50ml flask at 20°C in ‘Sec’ (Mean Value)	413.6 sec
	Time taken to fill 50ml at 40°C flask in ‘Sec’ (Mean Value)	121.3 sec
	Density of fluid in gm/cc	0.9059 gm/cc

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 20°C

ν=ct

= 413.6 × 0.247sec

= 102.1592 mm²/sec

 

For Test Temperature at 40°C

ν=ct

= 121.3 × 0.247sec

= 29.9611 mm²/sec

 

2. Calculation of Dynamic Viscosities:

For Test Temperature at 20°C

ν= η/ρ

102.1592 =η 0.9059

η = 102.1592 x 0.9059

= 92.546 mPa.S

 

For Test Temperature at 40°C

ν= η/ρ

29.9611 =η/ 0.9059

η = 29.9611 x 0.9059

= 27.1417 mPa.S

Conclusions:

Kinematic viscosity (experimental) of test chemical at 20°C and 40°C was determined to be 102.1592 mm²/sec & 29.9611 mm²/s and Dynamic viscosity of the test chemical was calculated to be 92.5460 mPa.S & 27.1417 mPa.S at 20°C and 40°C, 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 102.1592 mm²/sec & 29.9611 mm²/s and Dynamic viscosity of the test chemical was calculated to be 92.5460 mPa.S & 27.1417 mPa.S at 20°C and 40°C, respectively.

Description of key information

Based on the available data from study report, 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 102.1592 mm²/sec & 29.9611 mm²/s and Dynamic viscosity of the test chemical was calculated to be 92.5460 mPa.S & 27.1417 mPa.S at 20°C and 40°C, respectively.

Key value for chemical safety assessment

Viscosity:

92.546 mPa · s (dynamic)

at the temperature of:

20 °C

Additional information

Based on the available data from study report, 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 102.1592 mm²/sec & 29.9611 mm²/s and Dynamic viscosity of the test chemical was calculated to be 92.5460 mPa.S & 27.1417 mPa.S at 20°C and 40°C, respectively.