Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Additional information

6 -hydroxy-2 -naphthoic acid is a beige, organic powder, with a melting point at 248 °C, and a decomposition temperature at 310 °C.

The vapour pressure of the substance is 4.08*10 -7 Pa (modified grain method).

The measured log Po/w of 6 -hydroxy-2 -naphthoic acid is 2.1.

The water solubility of 6 -hydroxy-2 -naphthoic acid is 99 mg/l at 20 °C. 6 -hydroxy-2 -naphthoic acid could not be ignited by a flame is not flammable and based on its chemical structure has no explosiv and no oxidising properties.

The mean dissosiation constant values af three determinations at room temperature were:

pKa1 = 4.9

pKa2 = 9.7.