Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
no hazard identified

Marine water

Hazard assessment conclusion:
no hazard identified

STP

Hazard assessment conclusion:
no hazard identified

Sediment (freshwater)

Hazard assessment conclusion:
no hazard identified

Sediment (marine water)

Hazard assessment conclusion:
no hazard identified

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
no hazard identified

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

Vat Indigo Potassium Salt is instable in an aqueous phase at neutral pH or as solid material on air and oxidises rapidly to indigo (EC number 207-586-9). Hence we refer to the Risk Assessment in the indigo registration (REACH registration number 01-2119488933-22-0000).

 

The following discussion is taken from the Ecotoxicological Summary of the Lead Dossier for indigo: Indigo was not toxic in aquatic studies at the limit of solubility, hence it is not possible to derive PNECs for water. All effects seen in studies which were conducted with co-solvents lie above the limit of water solubility. Even though these studies were disregarded due to deficits in study conduct and/or deficient information in the reports, as a worst case assessment the 1/100th of the water solubility as reported in the OECD SIDS document was used for comparison with predicted environmental concentrations.

Conclusion on classification

According to Regulation (EC) No. 1272/2008, the test substance is not classified for environmeltal hazards.

It is not stable in water or air an oxidises rapidly to indigo. No adverse environmental or ecotoxicological effects were seen with indigo and the substance lacks any bioaccumulation potential.