Registration Dossier
Registration Dossier
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 232-077-3 | CAS number: 7785-26-4
Viscosity
Administrative data
Link to relevant study record(s)
- Endpoint:
- viscosity
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 26 December 2012 - 04 April 2013
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Remarks:
- Study performed according to international guidelines but not under GLP and with some lack of details.
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to other study
- Qualifier:
- according to guideline
- Guideline:
- OECD Test Guideline 114 (Viscosity of Liquids)
- Deviations:
- not specified
- Principles of method if other than guideline:
- The purpose of the study was to determine the viscosity of (-)-alpha pinene. The dynamic viscosity was determined at different shear rates and at a constant shear rate using a rotational viscosimeter
- GLP compliance:
- no
- Type of method:
- rotational viscometer (dynamic)
- Key result
- Temp.:
- 20°C
- Parameter:
- dynamic viscosity (in mPa s)
- Value:
- ca. 2.11
- Remarks on result:
- other: at a constant rate of 583.1 s-1. The test item was considered to be a Newtonian fluid.
- Conclusions:
- The dynamic viscosity of (-)-alpha-pinene was determined to be 2.11 ± 0.01 mPa.s at 20.0 ± 0.1°C at a constant shear rate of 583.1 s-1.
The test item was considered to be a Newtonian fluid.
Therefore, (-)-alpha-pinene is classified for aspiration toxicity Category 1 (may be fatal if swallowed and enters airways) according to Regulation (EC) No 1272/2008 (CLP) criteria and harmful (R65: may cause lung damage if swallowed) according to Directive 67/548/EEC. - Executive summary:
The study was conducted in accordance with OECD Guideline 114 using a rotational viscosimeter, to measure the dynamic viscosity of (-)-alpha-pinene at 20°C and at constant shear rate of 583 .1 s-1. In these conditions, the dynamic viscosity was determined to be 2.11 ± 0.01 mPa.s.
Therefore, (-)-alpha-pinene is classified for aspiration toxicity Category 1 (may be fatal if swallowed and enters airways) according to Regulation (EC) No 1272/2008 (CLP) criteria and harmful (R65: may cause lung damage if swallowed) according to Directive 67/548/EEC.
Reference
The results obtained at 20°C are given in the following table "Viscosities of the test item measured at 20°C" :
| Speed (1/min) | Shear stress (1/s) | Viscosity (mPa.s) | ||||
| Measure 1 | Measure 2 | Measure 3 | Mean | Standard deviation | ||
| 107,8 | 583,1 | 2,10 | 2,12 | 2,12 | 2,11 | 0,01 |
| 179,6 | 971,6 | 2,09 | 2,16 | - | 2,13 | |
| 297,9 | 1610 | 2,02 | 2,00 | - | 2,01 | |
| 500,0 | 2705 | 1,97 | 1,94 | - | 1,96 | |
Description of key information
The dynamic viscosity of (-)-alpha-pinene was determined to be 2.11 ± 0.01 mPa.s at 20.0 ± 0.1 °C at a constant shear rate of 583.1 s-1.
The test item was considered to be a Newtonian fluid.
Therefore, (-)-alpha-pinene is classified for aspiration toxicity Category 1 (may be fatal if swallowed and enters airways) according to Regulation (EC) No 1272/2008 (CLP) and harmful (R65: may cause lung damage if swallowed) according to Directive 67/548/EEC.
Key value for chemical safety assessment
- Viscosity:
- 2.11 mPa · s (dynamic)
- at the temperature of:
- 20 °C
Additional information
Key study conducted according to the OECD 114 Guideline.
The result is scientifically acceptable but not obtained under GLP. Therefore a reliability of 2 (reliable with restrictions) is assigned.
The viscosity value is supported by consistent experimental data obtained with alpha-pinene multiconstituent.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
