Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 247-269-2 | CAS number: 25797-81-3
Endpoint summary
Administrative data
Description of key information
Acid Blue 277 is considered to be not readily biodegradable.
Additional information
By the nature of their design and use, textile dyes are not intended to undergo rapid hydrolysis or be readily biodegradable as this would assist in the rapid destruction of the dyestuff, rendering it unfit for purpose.There are ISO, European, American (AATCC) guidelines and national standards for the colour fastness of dyes available. Dyes are required to have specific fastness properties. If the dyes were biodegradable, it would not be possible for them to have these fastness properties. As such, it is accepted that such substances are not readily biodegradable under relevant environmental conditions. A published study (Pagga & Brown, 1986) describes the results of the testing of 87 dyestuffs in short-term aerobic biodegradation tests. The authors of this publication concluded that dyestuffs are very unlikely to show any significant biodegradation in such tests and that 'there seems little point in carrying out such test procedures’ on dyestuffs. Nevertheless, biodegradbility of Acid Blue 277 was tested over the years in several Zahn Wellen tests as well as tests evaluating Biological Oxygen Demand (BOD5) and Chemical Oxygen Demand (COD). In the key inherent biodegradability study, the bioelimination of Acid Blue 277 measured as DOC corrected by the blank control was 3.1 % (average of 2 tests running in parallel). Hence, it was not considered to be inherently biodegradable. Further, several studies investigating Biological Oxygen Demand (BOD5) and Chemical Oxygen Demand (COD) of Acid Blue 277 are available. The BOD5/COD ratio in all cases was below 0.5, supporting the conclusion that the substance is not readily biodegradable.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
