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Physical & Chemical properties

Density

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Description of key information

Based on read across the density of (benzoato-O,O')hydroxy(octadecanoato-O,O')aluminium has been estimated to be 1080 kg/m3 at 20.0 ± 1.0°C (relative density value 1.08).

Key value for chemical safety assessment

Relative density at 20C:
1.08

Additional information

As no data was available for the density of (benzoato-O,O')hydroxy(octadecanoato-O,O')aluminium, the endpoint was read across from the substance aluminum, benzoate C16-18-fatty acids complexes. The density of the read-across substance was determined in a proprietary, GLP-compliant air comparison pycnometer (for solids) test following OECD guideline 109 (Harlan 2013).

Aluminum, benzoate C16-18-fatty acids complexes (CAS No. 94166-87-7, EC No. 303-385-6) is considered suitable for read across to (benzoato-O,O')hydroxy(octadecanoato-O,O')aluminium as it is structurally similar being an approximate 2:1 mixture of (benzoato-O,O')hydroxy(octadecanoato-O,O')aluminium and (benzoato-O,O')hydroxy(hexadecanoato-O,O')aluminium. The only significant difference therefore, being the presence of about 30% of the aluminium complex containing the saturated C16-fatty acid, hexadecanoate, in place of the saturated C18-fatty acid, octadecanoate.This small difference in composition is expected to have no influence on density.