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Description of key information

In accordance with section 2 of REACH (REGULATION (EC) No 1907/2006) Annex XI, the relative density study (required in section 7.4) does not need to be conducted as solid gluconic acid cannot be obtained.  Attempts to dry gluconic acid results in the formation of lactones.

Key value for chemical safety assessment

Additional information

Information regarding density of 50% aqueous solution of gluconic acid substance was based on the notional solid structure, gluconic acid, and was calculated using the ACD/I-Lab service ACD/LogP v8.02. Based on the ACD calculations, gluconic acid has a predicted density value of 1.763 g/cm3 at 20°C.