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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
oxidising properties
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Assessment of chemical structure against known structural alerts and oxygen balance in accordance with good scientific principles
Principles of method if other than guideline:
Assessment of structure of the mono-constituent substance against known structural alerts and oxygen balance of each to assess the ability to sustain oxidising properties
GLP compliance:
no
Sample tested:
other: assessment of structure
Parameter:
other: assessment of structure
Remarks on result:
other: assessment of structure
Sample tested:
other: assessment of structure
Parameter:
other: assessment of structure
Remarks on result:
not determinable

Structural Alerts: Yes (nitroaryl group)
Oxygen Balance Value  -77.09
Potential Oxidant? Yes
The oxygen balance of the main constituent of BK-659 indicates that the substance is not oxidising, as sufficient oxygen is not available to support oxidation. BK-659 contains a nitro group that could be indicative of oxidising properties, given that its electron withdrawing properties make it electronegative. However, a substance generally has oxidizing properties when the electronegative atoms are bonded to each other or to other electronegative elements such as iodine, nitrogen, sulphur or phosphorus. This is not the case with BK-659. Furthermore, given that destruction of azo dyes in waste water is undertaken using oxidisation, this is indicative that the substance is not intended to be an oxidiser.

Taking into account the above information, it is proposed that BK-659 does not have oxidising properties.
Interpretation of results:
other: no oxidising properties
Remarks:
Migrated information
Conclusions:
The substance is considered to be not oxidising.
Executive summary:

The structure of the substance has been assessed in comparison to known structural alerts for oxidising properties. The substance contains nitroaryl groups which are considered to be of potential concern. However, the oxygen balance of the structure is -77, suggesting that  sufficient oxygen is not available to support oxidation.

A substance generally has oxidising properties when the electronegative atoms are bonded to each other or to other electronegative elements such as iodine, nitrogen, sulphur or phosphorus. This is not the case with this substance.  Furthermore, given that destruction of azo dyes in waste water is undertaken using oxidisation, this is indicative that the substance is not intended to be an oxidiser.

Taking into account the above information, the substance is considered to not have oxidising properties.

Description of key information

The structure of the substance has been assessed in comparison to known structural alerts for oxidising properties. The substance contains nitroaryl groups which are considered to be of potential concern. However, the oxygen balance of the structure is -77, suggesting that sufficient oxygen is not available to support oxidation.

A substance generally has oxidising properties when the electronegative atoms are bonded to each other or to other electronegative elements such as iodine, nitrogen, sulphur or phosphorus. This is not the case with this substance.  Furthermore, given that destruction of azo dyes in waste water is undertaken using oxidisation, this is indicative that the substance is not intended to be an oxidiser. Taking into account the above information, the substance is considered to not have oxidising properties.

Key value for chemical safety assessment

Oxidising properties:
no

Additional information

Justification for classification or non-classification

The structure of the substance has been assessed in comparison to known structural alerts for oxidising properties. The substance contains nitroaryl groups which are considered to be of potential concern. However, the oxygen balance of the structure is -77, suggesting that  sufficient oxygen is not available to support oxidation.

A substance generally has oxidising properties when the electronegative atoms are bonded to each other or to other electronegative elements such as iodine, nitrogen, sulphur or phosphorus. This is not the case with this substance. Furthermore, given that destruction of azo dyes in waste water is undertaken using oxidisation, this is indicative that the substance is not intended to be an oxidiser.

Taking into account the above information, the substance is considered to not have oxidising properties.