Poly[oxy(methyl-1,2-ethanediyl)], .alpha.-[2-[[2,2-dimethyl-3-[(1-oxododecyl)oxy]propylidene]amino]methylethyl]-.omega.-[2-[[2,2-dimethyl-3-[(1-oxododecyl)oxy]propylidene]amino]methylethoxy]-

Endpoint summary

Additional information

Appearance/physical state/colour

Sika Härter LJ is a faint yellow liquid at 20 °C and 1013 hPa with an amine-like odour.

 

Melting Point/freezing point

Sika Härter LJ was tested for the melting point in a study according to EU method A.1, respectively OECD Guideline 102. A melting point of -39.3 °C with an estimated accuracy of ± 0.1 °C was determined. The test item showed the typical behaviour of a pure substance with a defined melting point.

 

Boiling point

Sika Härter LJ was tested for the boiling point in a study according to EU method A.1 and OECD giudeline 103. For the test item Sika Härter LJ no boiling point could be determined. The substance decomposes at 220.5°C. Calculation of the boiling point, based on the method of BANKS (1939), gave a quick initial estimate of 412 °C.

 

Density

Sika Härter LJ was tested for relative density according to OECD guideline 109 and EU method A.3. Using the pycnometer method, a density of 0.9237 ± 0.0023 g/cm3 (in SI-Units: 0.0009237 kg/m3) was measured at 20 ± 0.5 °C, this value being the mean of two independent determinations with the error of determination.

 

Particle size distribution (Granulometry)

In accordance with column 2 of REACH Annex VII, the test on particle size distribution (required in section 7.14) was waived as the substance is marketed or used in non-solid or non granular form only. Sika Härter LJ is a liquid at room temperature (20 °C).

 

Vapour pressure

A study was conducted according to OECD TG 104, Regulation (EC) No 440/2008 method A.4 and OPPTS 830.7950 to determine the vapour pressure of the test item. The vapour pressure of the test item was determined at three different temperatures (30, 45, 60 and 75 °C) using the effusion method (weight loss). All measured values showed good to medium reproducibility, giving relative standard deviations of less than 30 %, and perfect correlation. Therefore, the result of the test according to the guideline criteria was considered to be valid. The vapour pressure was calculated using the linear regression equation of the Log P versus 1/T function. The vapour pressure was calculated to be 0.000988 Pa at 20 °C and 0.00135 Pa at 25 °C respectively.

 

Partition coefficient

In accordance with column 2 in REACH Annex VII, the experimental determination of the partition coefficient is technically not feasible due to rapid hydrolysis of Sika Härter LJ upon contact with water. Therefore, the partition coefficient was calculated using KOWWIN v1.68 as part of EPISuite v4.11 from US Environmental Protection Agency. The log Pow values obtained for the smallest (n=1) and largest ( n=6) oligomer resulting in a Log Pow of 12.9582 (n=1) and 13.6742 (n=6), respectively. The two structures cover the whole range of possible compounds. As a worst case assumption the highest log Pow value of 13.6742 is used as key value for chemical safety assessment.

 

Water solubility

1. waiver
In accordance with Annex VII, column 2, determination of water solubility does not need to be conducted as Sika Härter LJ rapidly hydrolyses at pH 4, 7 and 9 with half life times under 12h (see section 5.1.2).

2. supporting study
A study was conducted to determine the water solubility of 2,2-Dimethyl-3-lauroyloxy-propanal one of the starting compounds of Hardener LJ. A defined value for the solubility in water could not be determined due to the properties of 2,2-Dimethyl-3-lauroyloxy-propanal: hydrolysis prevents the reaching of a solubility equilibrium.
The column elution method was chosen to determine the water solubility. Because of the properties of the test item, which consists of a oily liquid with low viscosity, no suitable carrier could be found. Therefore, the slow-stirring-method was chosen (draft OECD guideline, originally developed for the determination of log Pow) which avoids the formations of emulsions. In the main study, approx. 6 mL test item were given on 850 mL H2O under nitrogen and stirred at 20.0 ± 0.5 °C. Samples of all vessels showed values below LOQ of the analytical method (< 0.1 mg/L).
An additional experiment investigating the stability of the test item in water showed, that after spiking of deionized water giving a nominal concentration of 0.26 mg/L, the test item hydrolyses rapidly in contact with water, even in the absence of oxygen.

 

 

Surface tension

In accordance with column 2 of REACH Annex VII, the determination of the surface tension (required in section 7.6) was waived. Experimental surface tension determination was technically not feasible due to the rapid hydrolysis of the compound in water.

 

Flash point

Sika Härter LJ was tested for the flashpoint in a study according to EU method A.9. A flashpoint of 192 °C was determined, this value being the mean of two independent determinations. There was no difference between the two measured values. Therefore the result is considered to be valid.

 

Auto flammability

Sika Härter LJ was tested for auto ignition in a study according to EU method A.15. An auto ignition temperature of 425 ± 5.0 °C was determined,this value being the mean of three independent determinations.

 

Flammability

Flammable gases
The test item is a liquid at ambient conditions. This hazard class is only applicable for gases. Thus, the substance was not considered for classification as flammable gas.
 
Flammable liquid
see Flash point.
 
Flammable solids
The test item is a liquid at ambient conditions. This hazard class is only applicable for solids. Thus, the substance was not considered for classification as flammable solid.
 
Pyrophoric liquids
In accordance with section 2.9.4 Annex I of Regulation (EC) No 1272/2008 and ECHA guidance on the application of CLP Criteria section 2.9.4.2 the classification procedure for pyrophoric liquids need not to be applied when experience in manufacture or handling shows that the liquid does not ignite spontaneously on coming into contact with air at normal temperatures (i.e. the liquid is known to be stable at room temperature for prolonged periods of time (days)). Based on the experience in handling and use the substance is not known to ignite spontaneously when coming into contact with air at normal temperatures. Thus, no study was conducted and the substance was not considered for classification as pyrophoric liquid.
 
Pyrophoric solids
The test item is a liquid at ambient conditions. This hazard class is only applicable for solids. Thus, the substance was not considered for classification as pyrophoric solid.
 
Self-heating substances and mixtures
In accordance with ECHA guidance on the Application of the CLP Criteria section 2.11.4.2 and ECHA guidance on IR/CSA chapter R.7a section R7.1.10.7 the test does not to be conducted as in general liquids are not classified as self-heating since the phenomena applies only to solids and the test method is not applicable to liquids according to ECHA guidance on the Application of the CLP Criteria section 2.11.4.2.
 
Substances which, in contact with water, emit flammable gases
In accordance with column 2 of REACH Annex VI and with Regulation (EC) No 1272/2008 Annex I section 2.12.4 and ECHA guidance on the application of CLP Criteria section 2.12.4.2 the classification procedure for this hazard class need not to be applied. Based on the experience in handling and use the substance does not react with water and in addition the test substance is not pyrophoric. Thus, no study was conducted and the substance was not considered for classification.
 
Flammable Aerosols
Section 2.4.2 of Guidance on the application on the CLP Criteria state as follows: “Aerosols, this means aerosol dispensers, are any non-refillable receptacles made of metal, glass or plastics and containing a gas compressed, liquefied or dissolved under pressure, with or without a liquid, paste or powder, and fitted with a release device allowing the contents to be ejected as solid or liquid particles in suspension in a gas, as a foam, paste or powder or in a liquid state or in a gaseous state." Thus, as the substance does not meet the definition for aerosol, the test for aerosols was waived. Consequently the substance has not to be considered for classification for this hazard class.

 

Explosiveness

Based on the structure of the molecule and taking into account the provisions laid down in Regulation (EC) 1227/2008 (CLP), the test item does not have to be classified with respect to explosiveness. In accordance with column 2 adaptation statement of Annex VII Regulation (EC) No 1907/2006 (REACH), the determination of the explosive properties (as required in section 7.11 of Annex VII) was waived based on a structural assessment of the substance. The test item does not contain any functional groups quoted in ‘Manual of Tests and Criteria’ (seventh revised edition, appendix 6, and table A 6.1) which may indicate explosive properties. Therefore, it can be concluded by expert judgment that this substance is not explosive.

 

Oxidising properties

Oxidising gases
The test item is a liquid at ambient conditions. This hazard class is only applicable for gases. Thus, the substance was not considered for classification as oxidising gases.
 
Oxidising liquids
According the screening procedures as described in Appendix 6 of the Manual of Tests and Criteria seventh revised edition United Nations 2019 for organic compounds, the classification procedure for oxidising substances of Division 5.1 need not to be applied if:
(a) The compound does not contain oxygen, fluorine or chlorine; or
(b) The compound contains oxygen, fluorine or chlorine and these elements are chemically bonded only to carbon or hydrogen.
 As the test item contains oxygen chemically bonded only to carbon and hydrogen the classification procedure does not need to be applied.
 
Oxidising solids
The test item is a liquid at ambient conditions. This hazard class is only applicable for solids. Thus, the substance was not considered for classification as oxidising solid.

 

Viscosity

A study was conducted according to OECD TG 114 to determine the dynamic viscosity of SIKA Hardener LJ. Using the Höppler Viscometer and ultrapure water as reference the viscosity of SIKA Hardener LJ was determined at 20 °C and 40 °C. Two times three replicate measurements were performed at each temperature. The dynamic viscosity of SIKA Hardener LJ was determined to be 78.6 ± 0.002 mPa*s at 20 °C and 31.1 ± 0.003 mPa*s at 40 °C, respectively.

 

Self-reactive substances

In accordance with section 1 of REACH Annex XI, the UN test series A to H for self-reactive substances and mixtures do not need to be conducted as there are no chemical groups present in the molecule associated with explosive or self-reactive properties.

 

Organic Peroxides

In accordance with section 1 of REACH Annex XI, the UN test series A to H for organic peroxides do not need to be conducted as by definition based on the chemical structure the substance is no organic peroxide.

 

Gases under pressure

In accordance with section 1 of REACH Annex XI, a study for gases under pressure does not need to be conducted as the substance is a liquid.