Registration Dossier
Registration Dossier
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EC number: 931-330-1 | CAS number: 69227-24-3
Endpoint summary
Administrative data
Description of key information
Appearance / physical state / colour
The physical state / colour / odour were determined visually.Amides, C8-18 and C18 unsatd., N- (hydroxyethyl) is a solid at room temperature.
Melting point / freezing point
The melting point was determined according to ASTM Method D87-87 (Carrillo, 2008).
The melting point of amides, C18-18 and C18 unsatd., N-(hydroxyethyl) was 57.3 and 60.5 ºC ± 0.5 ºC.
Boiling point
Amides, C18-18 and C18 unsatd., N-(hydroxyethyl) decomposed before boiling. No value for boiling temperature could therefore be determined.
Density
The density of the sample at 20 ºC was 0.9986 g/mL, the relative density (20/20 ºC) was 1.0004 g/mL and the relative density (20/4 ºC) was 0.9987 mg/L. The accurancy was ± 0.0005.
Particle size distribution (Granulometry)
the study does not need to be conducted because the substance is marketed or used in a non solid or granular form
Vapour pressure
The vapour pressure was determined according to OECD Guideline 104 and EU Method A.4 (Petryka, 2010). Weighted average vapour pressure values for the test substance were also modelled using the Modified Grain method of the MPBPWIN v1.44 program of EPI Suite and the Consensus method of the T.E.S.T. v4.2.1 program.
Partition coefficient
Weighted average partition coefficient values were modelled using the fragment constant method of the KOWWIN V.1.68 program of EPI Suite, the group contribution method of Molinspiration (miLogP 2.2) and the efficient partition algorithm and associative neural network-based regression equations from ALOGPS V.2.1.
Water solubility
The water solubility was estimated using the WATERNT v 1.01 program of EPISUITE v. 4.0. Further water solubility testing according to OECD Guideline 105 is ongoing.
Surface tension
The surface tension of amides, C18-18 and C18 unsatd., N-(hydroxyethyl) was 38.5 mN/m at 12.2 mg/ L concentration according to OECD Guideline 115
Flash point
The flash point was determined according to ASTM Method D6450-99 (Carrillo, 2008).The flash point of amides, C18-18 and C18 unsatd., N-(hydroxyethyl) is 191 ± 0.2ºC at 101.3 kPa
Auto flammability
the study does not need to be conducted because the substance is a solid having a melting point
Flammability
Amides, C8-18 and C18 unsatd., N-(hydroxyethyl) is not highly flammable in accordance with EU Method A.10. criteria.
Explosiveness
the study does not need to be conducted because there are no chemical groups present in the molecule which are associated with explosive properties
Oxidising properties
the study does not need to be conducted because there are no chemical groups present in the molecule which are associated with oxidising properties and hence, the classification procedure does not need to be applied
Stability in organic solvents and identity of relevant degradation products
the study does not need to be conducted because the stability of the substance is not considered to be critical
Dissociation constant
the study does not need to be conducted because the substance has no ionic structure
Viscosity
the study does not need to be conducted because the substance is a solid
Additional information
Appearance / physical state / colour
Amides, C18-18 and C18 unsaturated, N-(hydroxyethyl) is a yellow solid at room temperature.
Melting point / freezing point
The melting point of amides, C8-18 and C18 unsatd., N-(hydroxyethyl) was determined to be between 57.3 and 60.5°C ± 0.5 ºC according to ASTM D87-87.
Boiling point
The boiling point of amides, C8-18 and C18 unsatd., N-(hydroxyethyl) according to OECD Guideline 103 (boiling point/boiling range) using photocell detection method could not be determined since the substance decomposed before boiling.
Density
The density of amides, C8-18 and C18 unsatd., N-(hydroxyethyl) was determined according to ISO 758 and pycnometer,Gay-Lussac type conforming to the dimension given in ISO 3507. The water bath temperature was at 19.9 ºC, the normal capacity was 25.073 cm3and the solvent used was hexene. The density of the sample at 20 ºC was 0.9986 g/mL, the relative density (20/20 ºC) was 1.0004 g/mL and the relative density (20/4 ºC) was 0.9987 mg/L. The accurancy was ± 0.0005.
Particle size distribution (Granulometry)
the study does not need to be conducted because the substance is marketed or used in a non solid or granular form
Vapour pressure
The measured vapour pressure was equivalent to 1.5E-5 Pa at 20°C. Using the Modified Grain method of the MPBPWIN v1.44 program of EPI Suite, the weighted average vapour pressure for the test substance was predicted to be less than 1.34E- 4 Pa at 25 deg C . According to the Consensus method of the T.E.S.T. v4.2.1 program, the weighted average vapour pressure was 1.92E Pa at 25 deg C .
The measured vapour pressure was retained as key value for risk assessment purposes.
Partition coefficient
Using the fragment constant method of the KOWWIN V.1.68 program of EPI Suite, the weighted average partition coefficient (log Kow) value for test substance was predicted to be 3.71. According to the group contribution method of Molinspiration (miLogP 2.2), the weighted average log Kow was 4.73. According to the efficient partition algorithm and associative neural network-based regression equations from ALOGPS V.2.1, the weighted average log Kow was 4.27. The average value of 4.24 was retained for risk assessment purposes
Water solubility
The range of water solubility estimated using WATERNT v 1.01 was 7.5-15 mg/L.
Surface tension
An OECD Guideline 115 study was conducted to determine the surface tension of amides, C18-18 and C18 unsatd., N-(hydroxyethyl). The critical micelle concentration (CMC) of the test material was determined to be 13.6 mg/L. This value was used as an approximation of the water solubility limit. At 90% of the above estimated solubility limit (12.2 mg/l), using the determined surface tension concentration dependence, the surface tension was calculated to be 38.5 mN/m.
Flash point
The flash point of amides, C8-18 and C18 unsatd., N-(hydroxyethyl) determined according to the standard test - continuous closed cup (CCCFP) method was 191 ± 0.2ºC at 101.3 kPa.
Auto flammability
the study does not need to be conducted because the substance is a solid having a melting point
Flammability
A study in accordance with EU method A.10 was conducted to determine the flammability of amides, C8-18 and C18 unsatd., N-(hydroxyethyl). In the preliminary test, the test substance was formed into an unbroken strip or powder train about 250 mm long by 20 mm wide by 10 mm high on a non-combustible, non-porous and low heat-conducting base plate. A hot flame from a gas burner (minimum diameter 5 mm) was applied to one end of the powder train until the powder ignited or for a maximum of 2 minutes. Amides, C8-18 and C18 unsatd., N-(hydroxyethyl) did not ignite from the flame of the burner instead it was found to be melting in the formed path and therefore is not highly flammable in accordance with EU Method A.10. criteria.
Explosiveness
the study does not need to be conducted because there are no chemical groups present in the molecule which are associated with explosive properties
Oxidising properties
the study does not need to be conducted because there are no chemical groups present in the molecule which are associated with oxidising properties and hence, the classification procedure does not need to be applied
Stability in organic solvents and identity of relevant degradation products
the study does not need to be conducted because the stability of the substance is not considered to be critical
Dissociation constant
the study does not need to be conducted because the substance has no ionic structure
Viscosity
the study does not need to be conducted because the substance is a solid
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