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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Explosiveness

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Administrative data

Link to relevant study record(s)

Description of key information

The substance disodium 6-hydroxy-5-[(4-sulphonatophenyl)azo]naphthalene-2-sulphonate though contains the chemical group (azo group) associated with explosive properties which include oxygen in the compound but the calculated oxygen balance is found to be less than - 200 (the value was obtained to be = -109.159). So, based on this calculation it can be inferred that the substance shall not be classified as explosive.  

Key value for chemical safety assessment

Additional information

The substance disodium 6-hydroxy-5-[(4-sulphonatophenyl)azo]naphthalene-2-sulphonate though contains the chemical group (azo group) associated with explosive properties which include oxygen in the compound but the calculated oxygen balance is found to be less than - 200 (the value was obtained to be = -109.159). So, based on this calculation it can be inferred that the substance shall not be classified as explosive. 

Justification for classification or non-classification