Registration Dossier
Registration Dossier
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EC number: 215-662-8 | CAS number: 1338-24-5
Viscosity
Administrative data
Link to relevant study record(s)
- Endpoint:
- viscosity
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 2010-01-27
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Although study is conducted according to ASTM standard there is no study report in accordance with GLP standards available.
- Qualifier:
- according to guideline
- Guideline:
- other: ASTM D445-72
- Deviations:
- no
- 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): DNA 195/205 SR
- Lot/batch No.: 1001507 - Temp.:
- other: 25.0°C
- Parameter:
- kinematic viscosity (in mm²/s)
- Value:
- 1 300
- Conclusions:
- The viscosity of naphthenic acid was determined to be 1300 mm²/s at 25°C following method ASTM D445-72.
- Endpoint:
- viscosity
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 2010-09-07
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Although study is conducted according to ASTM standard there is no study report in accordance with GLP standards available.
- Qualifier:
- according to guideline
- Guideline:
- other: ASTM D445-72
- Deviations:
- no
- 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): DNA 220/250 SR
- Lot/batch No.: 1009616 - Temp.:
- other: 25.0°C
- Parameter:
- kinematic viscosity (in mm²/s)
- Value:
- 22
- Conclusions:
- The viscosity of naphthenic acid was determined to be 22 mm²/s at 25°C following method ASTM D445-72.
- Endpoint:
- viscosity
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 2010-04-09
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Although study is conducted according to ASTM standard there is no study report in accordance with GLP standards available.
- Qualifier:
- according to guideline
- Guideline:
- other: ASTM D445-72
- Deviations:
- no
- 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): DNA 190/200 BLR
- Lot/batch No.: 1004544 - Temp.:
- other: 25.0°C
- Parameter:
- kinematic viscosity (in mm²/s)
- Value:
- 85
- Conclusions:
- The viscosity of naphthenic acid was determined to be 85 mm²/s at 25°C following method ASTM D445-72.
- Endpoint:
- viscosity
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 2010-06-23
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Although study is conducted according to ASTM standard there is no study report in accordance with GLP standards available.
- Qualifier:
- according to guideline
- Guideline:
- other: ASTM D445-72
- Deviations:
- no
- 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): CNA 180/190 SRE
- Lot/batch No.: 1006580 - Temp.:
- other: 25.0°C
- Parameter:
- kinematic viscosity (in mm²/s)
- Value:
- 85
- Conclusions:
- The kinematic viscosity of naphthenic acid was determined to be 85 mm²/s at 25°C following method ASTM D445-72.
- Endpoint:
- viscosity
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 2010-03-30
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Although study is conducted according to ASTM standard there is no study report in accordance with GLP standards available.
- Qualifier:
- according to guideline
- Guideline:
- other: ASTM D445-72
- Deviations:
- no
- 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): DNA 195/205 SR
- Lot/batch No.: 1003540 - Temp.:
- other: 25.0°C
- Parameter:
- kinematic viscosity (in mm²/s)
- Value:
- 1 570
- Conclusions:
- The viscosity of naphthenic acid was determined to be 1570 mm²/s at 25°C following method ASTM D445-72.
- Endpoint:
- viscosity
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 2010-05-26
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Although study is conducted according to ASTM standard there is no study report in accordance with GLP standards available.
- Qualifier:
- according to guideline
- Guideline:
- other: ASTM D445-72
- Deviations:
- no
- 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): CNA 150/160 SR
- Lot/batch No.: 1005565 - Temp.:
- other: 25.0°C
- Parameter:
- kinematic viscosity (in mm²/s)
- Value:
- 100
- Conclusions:
- The viscosity of naphthenic acid was determined to be 100 mm²/s at 25°C following method ASTM D445-72.
Referenceopen allclose all
Description of key information
Several experimentally determined values for the viscosity of naphthenic acid were reported following the ASTM D445-72 method and were considered reliable with restrictions (K2). Values reported were 22, 85, 85, 100, 130, 1570 mm²/s at 25°C and were used in a weight of evidence approach to cover the endpoint.
Key value for chemical safety assessment
- Viscosity:
- 796 mm²/s (static)
- at the temperature of:
- 25 °C
Additional information
Because naphthenic acid is a mixture of many different isomers of cycloalkyl carboxylic acids, physicochemical properties vary according to the proportions of the individual compounds in their composition. Therefore it is not possible to set a specific value for viscosity as this will vary dependent on the hydrocarbon component make-up of the complex mixture. A set of six studies conducted according to method ASTM D445 -72 on various naphthenic acids are addressed in this dossier. The results show a wide variation among values ranging from as little as 22 up to 1570 mm²/s at 25°C depending on composition. The data indicate that it is not possible to set a unique value for this UVCB.
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