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Physical & Chemical properties

Viscosity

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Endpoint:
viscosity
Type of information:
other: Expert assessment
Adequacy of study:
key study
Study period:
2010
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Assessment based on properties of the substance and chemical structure.
Qualifier:
no guideline followed
Principles of method if other than guideline:
Assessment based on properties of the substance and chemical structure
GLP compliance:
no
Type of method:
other: Visual assessment
Temp.:
other:
Parameter:
kinematic viscosity (in mm²/s)
Value:
> 20.5
Remarks on result:
other: Substance is a viscous liquid with greater viscosity than water.
Conclusions:
An assessment based on the structure and properties of the substance was carried out. The substance is described as a 'viscous yellow liquid' and is observed to be more viscous than water.
Executive summary:

The viscosity of the registered substance was determined via a visual assessment of the substance. Direct observations suggest the substance is more viscous than water and will not present an aspiration hazard if ingested. All test reports for work performed in 2010 on batch TSM 10/40 FA9110617 describe the substance as ‘viscous yellow liquid’ and indeed, warming is needed to assist pouring and mixing. An estimated value of > 20.5 mm2/s has been determined in the assessment.

Endpoint:
viscosity
Type of information:
migrated information: read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
supporting study
Study period:
21 June 2011
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: No information on used method provided
Qualifier:
no guideline followed
Principles of method if other than guideline:
Method 'LV M2 V30' was followed to perform the test. This method was not specified further.
GLP compliance:
not specified
Type of method:
rotational viscometer (dynamic)
Temp.:
other: 75.0°C
Parameter:
other: cP
Value:
450
Temp.:
other: 85.0°C
Parameter:
other: cP
Value:
204
Temp.:
other: 95.0°C
Parameter:
other: cP
Value:
103

No additional information was provided.

Conclusions:
Rotational viscosimetry was applied to determine the viscosity of the test substance at 75, 85 and 95°C. Values found at the respective temperatures are: 450, 204 and 103 cP.
Executive summary:

The viscosity of the test substance was determined using a rotational viscomiter at 75, 85 and 95°C. Values found at the respective temperatures are: 450, 204 and 103 cP.

Description of key information

The viscosity of the registered substance was estimated via a visual assessment. The substance was observed to be more viscous than water. A viscosity value of 20.5 mm^2/s was estimated.

Key value for chemical safety assessment

Viscosity:
20.5 mm²/s (static)
at the temperature of:
20 °C

Additional information

The viscosity of the registered substance was determined via a visual assessment of the substance. Direct observations suggest the substance is more viscous than water and will not present an aspiration hazard if ingested. All test reports for work performed in 2010 on batch TSM 10/40 FA9110617 describe the substance as ‘viscous yellow liquid’ and indeed, warming is needed to assist pouring and mixing. In addition, a read-across study was conducted on the BPA 2PO which gave a viscosity of 450 cP at 75°C, 204 cP at 85°C and 103 cP at 95°C.