Registration Dossier
Registration Dossier
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EC number: 410-070-8 | CAS number: 141880-36-6 ACID RED HT 3728; ERIONYL RED HT 3728
Endpoint summary
Administrative data
Description of key information
From the results of the modified AFNOR-TEST - OECD 301A test (degradation: 0 % on day 28) and BOD5/COD ratio (BOD5/COD=0.008), 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 12.2 %. Therefore, test substance is not inherently biodegradable over the 28-day test period under valid test conditions. In conclusion, the test substance is non-biodegradable. A guidance test of hydrolysis as a function of pH was performed under GLP. The test substance was dissolved in aqueous buffer solution, and the temperature and pH were checked at pH 4, 7 and 9 respectively. The decrease of the concentration with time was determined by HPLC. The test results showed that the test substance has a half-life time longer than one year at 25 °C at pH 4, 7 and 9. The test substance is stable at pH 4, 7 and 9. The information from biodegradation and hydrolysis tests is sufficient for the Persistence assessment. Because of the low log K0w (log Know <3), it is not necessary to perform an accumulation test or adsorption/desorption test, as the substance is not expected to bioaccumulate in the environment or significantly adsorb to sediment or soil.
Additional information
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