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EC number: 203-119-8 | CAS number: 103-52-6
Viscosity
Administrative data
Link to relevant study record(s)
- 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:
- Data is from 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
- Temp.:
- 20°C
- Parameter:
- dynamic viscosity (in mPa s)
- Value:
- 22.02
- Remarks on result:
- other: Dynamic viscosity
- Temp.:
- 40°C
- Parameter:
- dynamic viscosity (in mPa s)
- Value:
- 19.96
- Remarks on result:
- other: Dynamic viscosity
- Conclusions:
- Dynamic viscosity (calculated) of test chemical at 20 degree C and 100 degree C is 22.02 mPa.S and 19.96 mPa.S, respectively.
- Executive summary:
The viscosity determination of test substance was done as per the test guideline OECD 114 using Redwood Viscometer No. 1. Dynamic viscosity (calculated) of test chemical at 20°C and 40°C is 22.02mPa.S and 19.96mPa.S, respectively.
Reference
Calculation of Dynamic Viscosities:
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
= 79 × 0.264sec
= 20.85mm²/sec
For Test Temperature at 40°C
ν=ct
= 71.6 × 0.264sec
= 18.90 mm²/sec
2. Calculation of Dynamic Viscosities:
For Test Temperature at 20°C
ν= η/ρ
Page 2 of 4 UERL/PC/007-02
20.85 =η 1.056
η = 20.85 x 1.056
= 22.02 mPa.S
For Test Temperature at 40°C
ν= η/ρ
18.90 =η/ 1.056
η = 18.90 x 1.056
= 19.96 mPa.S
Description of key information
Dynamic viscosity (calculated) of test chemical at 20°C and 40°C is 22.02mPa.S and 19.96mPa.S, respectively.
Key value for chemical safety assessment
- Viscosity:
- 22.02 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 using Redwood Viscometer No. 1. Dynamic viscosity (calculated) of test chemical at 20°C and 40°C is 22.02mPa.S and 19.96mPa.S, respectively.
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