Azelaic acid, calcium salt (1:1)

Endpoint summary

Description of key information

Physico-chemical endpoints are completed for this substance based on test data following standard guidelines, or data waivers. All data are therefore considered to be reliable and relevant for the endpoint concerned.

 

Appearance/Physical state/Colour

The test item is a white solid as reported in a GLP-compliant experimental study (Volic 2019).

 

Melting point/freezing point

The melting point of the test item could not be determined as reaction and / or decomposition was observed from 225°C. The study was conducted according to OECD 102 and EC A.1 guidelines using differential scanning calorimetry (Volic 2019).

 

Boiling point

The boiling point of the test item could not be determined as reaction and / or decomposition was observed from 225°C. The study was conducted according to OECD 103 and EC A.2 guidelines using differential scanning calorimetry (Volic 2019).

 

Density

The relative density of the test item was determined to be 1.46 at 20°C in the study conducted according to OECD 109 and EC A.3 guidelines using a gas comparison stereopycnometer (Volic 2019).

 

Particle size distribution

This endpoint was waived as in accordance with column 2 of REACH Annex VII, the granulometry study does not need to be conducted as the substance is marketed or used in a non-solid or granular form.

 

Vapour pressure

The vapour pressure of the test item was determined to be <1.3E-8 Pa and <5.5E-8 at 20°C and 25°C, respectively. The study was conducted according to OECD 104 and EU A.4 guidelines using the isothermal thermogravimetric (TGA) effusion method (Volic 2019).

 

Partition coefficient

The log Pow value was determined to be -2.6. The partition coefficient was determined by shake flask method according to OECD 107 and EU A.8 guidelines (Ciric 2019).

 

Water solubility

The water solubility of the test item was determined to be 3.97 g/L at 20°C. Water solubility was tested according to OECD 105 and EU A.6 guidelines using the flask method (Ciric 2019).

 

Surface tension

The surface tension of the test item was determined to be 69.92 mN/m and it is therefore not surface active. The study was performed according to the OECD 115 and EU A.5 guidelines using the OECD harmonised ring method (Volic 2019).

 

Flash point

The flash point was waived as in accordance with ECHA (2017) guidance on information requirements and chemical safety assessment, chapter R7a: endpoint specific guidance, the flashpoint study does not need to be conducted as this substance is a solid at room temperature.

 

Auto flammability

The auto-ignition temperature of the test item was determined to be 390°C in a study conducted according to EU A.16 guideline.

 

Flammability

Calcium azelate is considered not flammable based on the preliminary screening test according to the UN N.1 method and is not a self-heating substance based on a study according to the UN N.4 method (Volic 2019).

 

Explosiveness

This endpoint was waived as in accordance with column 2 of REACH Annex VII, the explosive properties study does not need to be conducted as there are no chemical groups associated with explosive properties present in the molecule.

 

Oxidising properties

This endpoint was waived as in accordance with column 2 of REACH Annex VII, the oxidising properties 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.

Additional information

Physico-chemical endpoints are completed for this substance based on test data following standard guidelines, or data waivers. All data are therefore considered to be reliable and relevant for the endpoint concerned.