Diphenyl sulphide

Viscosity

Link to relevant study record(s)

Reference

Endpoint:

viscosity

Type of information:

experimental study

Adequacy of study:

key study

Study period:

18/03/2016 - 18/03/2016

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Justification for type of information:

Experimental test result following OECD guideline.

Qualifier:

according to guideline

Guideline:

OECD Test Guideline 114 (Viscosity of Liquids)

Principles of method if other than guideline:

The flow of test item under gravity through a capillary using Redwood Viscometer No. 1.
The viscosity determination of Test item Diphenyl sulphide (CAS No. 139-66-2) was done as per the test guideline OECD 114 using Redwood Viscometer No. 1.

GLP compliance:

no

Type of method:

capillary viscometer (static)

Specific details on test material used for the study:

Name of test material (as cited in study report): Diphenyl sulphide
Molecular formula:C12H10S
Molecular weight:186.277 g/mol
Smiles : c1(Sc2ccccc2)ccccc1
InChI : 1S/C12H10S/c1-3-7-11(8-4-1)13-12-9-5-2-6-10-12/h1-10H
Substance Type: Organic
Physical State: Liquid

Key result

Temp.:

20°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

19.43

Remarks on result:

other: No other detail available

Key result

Temp.:

40°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

16.71

Remarks on result:

other: No other detail available

Key result

Temp.:

20°C

Parameter:

dynamic viscosity (in mPa s)

Value:

21.45

Remarks on result:

other: No other detail available

Key result

Temp.:

40°C

Parameter:

dynamic viscosity (in mPa s)

Value:

18.44

Remarks on result:

other: No other detail available

TEST DESCRIPTION AND RESULT

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 capillaryusing RedwoodViscometer 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)	73.6 sec
	Time taken to fill 50ml at 40 °C flask in ‘Sec’ (Mean Value)	63.3 sec
	Density of fluid in g/cm^3	1.104g/cm^3

 

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 Temperatureat20 °C

               ν=ct

               = 0.264× 73.6sec

                = 19.43 mm²/sec

 

For Test Temperature at40 °C

ν=ct

               = 0.264× 63.3sec

               = 16.71mm²/s

 

2.      Calculation of Dynamic Viscosities:

 

For Test Temperature at 20°C

               ν= η/ρ

               19.43 =η/1.104

               η =1.104 x19.43

                 =21.45mPa.S

 

For Test Temperature at40 °C

               ν= η/ρ

               16.71 = η/1.104

               η = 1.104 x 16.71

                 = 18.44mPa.S

 

Result:

Sr. No.	Temperature of Test item (°C)	Time taken to fill the 50 ml of flask in ‘seconds’ (mean value)	Kinematic Viscosity in mm^2/s	Density ing/cm^3	Dynamic (or) Absolute Viscosity mPa.S
1.	20 °C	73.6 sec	19.43 mm^2/sec	1.104g/cm^3	21.45 mPa.S
2.	40 °C	63.3 sec	16.71mm^2/s	1.104g/cm^3	18.44mPa.S

Conclusions:

Kinematic viscosity (experimental) of Diphenyl sulphide CAS No. 139-66-2 at 20 °C and 40 °C is 19.43 mm2/sec and 16.71mm2/sec , respectively.
Dynamic viscosity (calculated) of Diphenyl sulphide CAS No. 139-66-2 at 20 °C and 40 °C is 21.45 mPa.S and 18.44 mPa.S mPa.S, respectively.

Executive summary:

The viscosity determination of Test itemDiphenyl sulphide(CAS No. 139-66-2) was done as per the test guideline OECD 114 using Redwood Viscometer No. 1. Kinematic viscosity (experimental) of test item at 20⁰C and 40⁰C is19.43 mm²/sec and 16.71.mm²/sec, respectively. Dynamic viscosity (calculated) of Test item at 20 °C and 40 °C is 21.45 mPa.S and 18.44mPa.S, respectively.

Description of key information

Kinematic viscosity (experimental) of Diphenyl sulphide CAS No. 139-66-2 at 20 °C and 40 °C is 19.43 mm2/sec and 16.71 mm2/sec , respectively.

Dynamic viscosity (calculated) of Diphenyl sulphide CAS No. 139-66-2 at 20 °C and 40 °C is 21.45 mPa.S and 18.44 mPa.S mPa.S, respectively.

Key value for chemical safety assessment

Viscosity:

21.45 mPa · s (dynamic)

at the temperature of:

20 °C

Additional information

The viscosity determination of Test item Diphenyl sulphide (CAS No. 139-66-2) was done as per the test guideline OECD 114 using Redwood Viscometer No. 1. Kinematic viscosity (experimental) of test item at 20⁰C and 40⁰C is19.43 mm²/sec and 16.71.mm²/sec, respectively. Dynamic viscosity (calculated) of Test item at 20 °C and 40 °C is 21.45 mPa.S and 18.44 mPa.S, respectively.