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Description of key information

Range of naturally occurring material 2.5 to 3.26

Key value for chemical safety assessment

Relative density at 20C:

Additional information

Handbook data are available for naturally occurring forms of the submission item. These minerals belonging to the mineral group of Alunites, were found to have a measured density in the range of 2.5 to 3.26 g/cm³, while calculated values are 3.10 to 3.17 g/cm³. The value taken for assessment is the arithmetic mean of the measured extreme values, which is 3 g/cm³ or a relative density of 3 at 20 °C.