Registration Dossier
Registration Dossier
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EC number: 254-959-7 | CAS number: 40530-60-7
Endpoint summary
Administrative data
Description of key information
Disperse Red 302 was evaluated for inherent biodegradability according to the OECD Guideline 302 C (Inherent Biodegradability: Modified MITI Test (II)). The biodegradation of FAT 93503/A after 7, 14 and 28 days was 10 %, 13 % and 13 %, respectively. Hence, FAT 93503/A was concluded to be not inherently biodegradable (Biodegradation is <20 %). In addition, 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.
Additional information
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