Registration Dossier
Registration Dossier
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Reaction mass of pentasodium 2-{[4-chloro-6-(ethyl{3-[(2-sulfonatoethyl)sulfonyl]phenyl}amino)-1,3,5-triazin-2-yl]amino}-5-hydroxy-6-({2-sulfonato-4-[(4-sulfonatophenyl)diazenyl]phenyl}diazenyl)naphthalene-1,7-disulfonate and tetrasodium 2-[(4-chloro-6-{ethyl[3-(vinylsulfonyl)phenyl]amino}-1,3,5-triazin-2-yl)amino]-5-hydroxy-6-({2-sulfonato-4-[(4-sulfonatophenyl)diazenyl]phenyl}diazenyl)naphthalene-1,7-disulfonate
EC number: 459-580-2 | CAS number: -
Endpoint summary
Administrative data
Description of key information
Additional information
Study reports have been available for the ready biodegradability test, inherent biodegradability test, hydrolysis as a function of pH and adsorption / desorption test. The results are summarized as below:
From the results of the ready biodegradability test (degradation: 0 % on day 28) and BOD5/COD ratio (BOD5/COD=0), it can be concluded the test substance is not readily biodegradable. The inherent biodegradability test was available according to OECD Guideline 302B. The biodegradation of test substance on day 28 was 8 %. Therefore, the test substance is also not inherently biodegradable.
The hydrolysis behaviour of FAT 40824/A in aqueous buffered solutions adjusted to pH 4.0, pH 7.0 and pH 9.0 was determined according to OECD Guideline for Testing of Chemicals No. 111. The results show that FAT 40824/A is stable at pH 4.0. Its half-life is longer than one year at 25 °C. The first peak of FAT 40824/A at pH 7.0 has a half-life of 90 hours (4 days) at 25 °C. The second peak of FAT 40824/A at pH 9.0 has a half-life of 2530 hours (105 days) at 25 °C.
The determination of the adsorption coefficient (KOC) of test item was performed according to the OECD Guideline for the Testing of Chemicals, No. 121. In conclusion, the log of the adsorption coefficient (KOC) of test item was estimated to be log KOC <1.25 which is equal to a KOC value of <18 using the HPLC method. This value indicates that the test item will not be adsorbed by organic carbon in soil.
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