Registration Dossier
Registration Dossier
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EC number: 235-406-9 | CAS number: 12220-06-3
Endpoint summary
Administrative data
Description of key information
The primary source of possible substance environmental release is represented by industrial waste waters, thus the fate and pathways of the substance in surface water is of primary concern.
Considering the intended use in aqueous-based treatments, Acid Orange 067 is not expected to be directly released to air, either soil. The physicochemical properties of the item confirm that the air compartment can be considered as not relevant.
The substance is more or less soluble in aqueous solutions, depending on the water ions concentrations. Acid Orange 067 is a powder at room temperature and it does not melt/boil up to ca 300 °C.
In the aquatic environment, hydrolysis is not expected to be an important removal process for Acid Orange 067 due to the chemical characteristics.
Phototransformation in air/water/soil has not been investigated.
Although Acid Orange 067 is neither readily nor inherently biodegradable, the biodegradability available tests showed that the substance can be efficiently removed from waste water by adsorption to sludge. In the key study, the main elimination process occurred during the first day, when 93 % of the initial DOC was removed by adsorption.
The binding capacity (or “stickiness”) of the Acid Orange 067 to solid surfaces is expected to be low, on the basis of the physicochemical properties and the estimated value.
There are no empirical bioaccumulation data available for Acid Orange 067, nevertheless on the basis of the negative log Pow, it is expected to be characterized by a low potential for bioaccumulation and/or a low potential to cross biological membranes.
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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