Registration Dossier

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Additional information

Appearance/physical state/colour

SIKA Hardener LH is a faint yellowish liquid at 20 °C and 101.3 kPa with amine-like odour.

 

Melting point/freezing point

A melting point study was carried out according to EU guideline A.1 and OECD 102. For SIKA Hardener LH a melting range of 1.3 - 1.95 °C was determined at 1013 hPa.

 

Boiling point

A boiling point study was carried out according to EU guideline A.2 and OECD 103. SIKA Hardener LH decomposed at ca. 280 °C and 1013 hPa.

 

Density

Relative density was measured according to EU guideline A.3 and OECD 109. The relative density of SIKA Hardener LH was determined to be 0.9057 at 20 +/- 0.5 °C.

 

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 Hardener LH is a liquid at room temperature (20 °C).

 

Vapour pressure

Available experimental methods do not allow vapour pressure determination below 1.00E-5 Pa, thus, for SIKA Hardener LH experimental vapour pressure determination was technically not feasible. Vapour pressure of SIKA Hardener LH was estimated using the modified Grain method resulting in 3.48E-11 mm Hg corresponding to 4.64E-09 Pa at 25 °C (EPI Suite, 2014).

 

Partition coefficient

Due to rapid hydrolysis of SIKA Hardener LH upon contact with water, experimental partition coefficient determination was technically not feasible. The partition coefficient of SIKA Hardener LH was calculated resulting in a Log Kow of 14.22 (Epi Win 2000).

 

Water solubility

Due to rapid hydrolysis of SIKA Hardener LH upon contact with water, experimental water solubility determination was technically not feasible. The water solubility of SIKA Hardener LH was calculated to be 5.50E-011 mg/L (5.50E-08 µg/L) at 25 deg C (Epi Win, 2008). Thus, SIKA Hardener LH is considered insoluble.

 

Surface tension

In accordance with column 2 of REACH Annex VII, the determination of surface tension (required in section 7.6) was waived and surface activity predicted. Experimental surface tension determination was technically not feasible due to rapid degradation of SIKA Hardener LH in water and limited water solubility (estimated water solubility of SIKA Hardener LH was 5.501E-011 mg/L at 25 °C). Based on chemical structure SIKA Hardener LH was considered not surface active.

 

Flash point

A flash point study was carried out with SIKA Hardener LH according to EU method A.9. The flash point was determined to be 209 ± 3.0 °C.

 

Auto flammability

The auto ignition temperature study was carried out according to EU-Method A.15. An auto ignition temperature of 430 ± 5.0 °C was determined, this value being the mean of three independent determinations.

 

Flammability

Based on flash point determination according to EU Method A.9 and experience in handling and use, SIKA Hardener LH was considered not flammable as such or in contact with water and not to exhibit pyrophoric properties. The chemical structure of SIKA Hardener LH contains no groups associated with flammability properties (as such or in contact with water) and/or pyrophoric properties. Studies according to EU Method A.12 and EU Method A.13 were waived and a theory based evaluation provided.

 

Explosiveness

In accordance with column 2 of REACH Annex VII, the test on explosiveness (section 7.11) was waived as the chemical structure of SIKA Hardener LH does not contain chemical groups or structural components part of the molecule indicating explosive properties. EU Method A.14 was replaced by a theoretical based evaluation. SIKA Hardener LH was considered not explosive. No experimental determination was carried out.

 

Oxidising properties

In accordance with column 2 of REACH Annex VII section 7.13, the test on oxidising properties was waived as the chemical structure of SIKA Hardener LH does not contain chemical groups, indicating oxidising properties. In general, oxidising properties are not expected for an organic molecule that does not contain oxygen, chlorine or fluorine or if the molecule does contain oxygen, chlorine or fluorine, but these elements are only chemically bonded to carbon or hydrogen. As can be seen from the chemical structure, this is the case for SIKA Hardener LH. The substance does not contain chlorine or fluorine and all the oxygen atoms are bound to carbon atoms only and thus, do not impose any oxidising properties. EU Method A.17 was replaced by a theory based evaluation. SIKA Hardener LH was considered not oxidising. No experimental determination was carried out.