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Density

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Description of key information

The mean pourdensity and tappeddensity of test item 4-amino-5-hydroxynaphthalene-1,7-disulphonic acid(CAS No. 130-23-4) was determined following OECD Guideline 109 and according to the method recommended in the International Pharmacopoeia, fourth Edition, 2014 using bulk density apparatus .The mean pour density and tapped density of the test item was found to be0.6458 g/cm3and 0.7417 g/cm3at 28.4oC and  966.9 hPa.

Key value for chemical safety assessment

Relative density at 20C:
0.646

Additional information

The mean pourdensity and tappeddensity of test item 4-amino-5-hydroxynaphthalene-1,7-disulphonic acid(CAS No. 130-23-4) was determined following OECD Guideline 109 and according to the method recommended in the International Pharmacopoeia, fourth Edition, 2014 using bulk density apparatus .The mean pour density and tapped density of the test item was found to be 0.6458 g/cm3and 0.7417 g/cm3at 28.4oC and  966.9 hPa.