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EC number: 276-911-4
CAS number: 72829-25-5
Reactive Red 024:1 is considered non
biodegradable and hydrolytically stable. In general, textile chemicals
especially textile dyes are designed to be no organic substrates for
microorganisms, fungi and higher organisms. Therefore, these substances
are considered to be non-biodegradable. Nevertheless, basic studies to
assess biodegradability of FAT 40034/A have been performed. A
key study reported biological
elimination of FAT 40034/A as 12 %.
BOD5 and COD values of 0and
were reported in
two support studies, respectively. The
relevant BOD5/COD quotient is <0.5 , therefore the substance
is not indicative of rapid degradation. Taking
the data from key study and supporting studies into account, FAT 40034
is considered to be not biodegradable. Additionally, by the
nature of their design and use, reactive 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.
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.
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