Registration Dossier
Registration Dossier
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EC number: 276-602-4 | CAS number: 72363-26-9
Endpoint summary
Administrative data
Description of key information
Disperse Red 092 can be considered to be not biodegradable.
Additional information
By the nature of their design and use, disperse dyes are not intended to be readily biodegradable as this would assist in the rapid destruction of the dyestuff, rendering it unfit for purpose. 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.
There are ISO, European, American (AATCC) and national standards for the colour fastness of dyes. 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. However, the biodegradation potential of FAT 40444 was assessed using two different studies. In a study to assess the ready biodegradability of FAT 40444/B, the test item attained 0 % biodegradation after 28 days and therefore cannot be considered to be readily biodegradable. In a supporting study, the BOD5/COD ratio was equal to 0.13, indicating that the substance is not readily biodegradable. Based on the above information, FAT 40444/B can be considered to be not 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.
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