Registration Dossier
Registration Dossier
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EC number: 219-210-0 | CAS number: 2387-03-3
Endpoint summary
Administrative data
Description of key information
Additional information
Biodegradation in water: screening tests
A number of studies for the test compound C.I. Pigment Yellow 101(CAS no 2387-03-3) were reviewed for the biodegradation end point which are summarized as below:
During determination of the Biodegradability in the C02-Evolution Test [BASFStudy Report, Sustainability Support Services (Europe) AB(Report no.01/0031/22/1), 2002] according to OECD Guideline 301 B, the Biodegradation degree (C02 to ThCO2) after 28 days of the test substance LUMOGEN GB 0790 ST. BER. 100% was found to be <10 % which indicate that the test substance LUMOGEN GB 0790 ST. BER. 100% is poorly biodegradable (not readily biodegradable according to OECD criteria).
Estimation Programs Interface Suite (EPI suite) was run to predict the biodegradation potential of the test compound C.I. Pigment Yellow 101(CAS no 2387-03-3). The screening test inherent to the biodegradability of the substance was calculated using the software BIOWIN v4.10. The results indicate that C.I. Pigment Yellow 101is not expected to be readily biodegradable.
Biodegradation in water ability was predicted for the test compound C.I. Pigment Yellow 101(CAS no 2387-03-3) using the SSS QSAR prediction model. The ready biodegradability of the test substance C.I. Pigment Yellow 101 after 28 days was estimated as 23.059% by using DOC removal parameter. This result indicates that C.I. Pigment Yellow 101is not expected to be readily biodegradable in water.
Biodegradation in water and sediment: simulation tests
Half life period of 1-Naphthalenecarboxaldehyde, 2-hydroxy-, (2-hydroxy-1-naphthalenyl)methylene hydrazone in water is observed to be 37.5 days (900 hrs.) while in sediment it is 337.5 days (8100 hrs). Based on these half life values of 1-Naphthalenecarboxaldehyde, 2-hydroxy-, (2-hydroxy-1-naphthalenyl)methylene hydrazone, it is concluded that the chemical is not persistent in water and persistent in sediment.Half life period of 1-Naphthalenecarboxaldehyde, 2-hydroxy-, (2-hydroxy-1-naphthalenyl)methylene hydrazone in water is observed to be 37.5 days (900 hrs.) while in sediment it is 337.5 days (8100 hrs). Based on these half life values of 1-Naphthalenecarboxaldehyde, 2-hydroxy-, (2-hydroxy-1-naphthalenyl)methylene hydrazone, it is concluded that the chemical is not persistent in water and persistent in sediment.
Biodegradation in soil
EPI Suite has estimated that 1-Naphthalenecarboxaldehyde, 2-hydroxy-,(2-hydroxy-1-naphthalenyl)methylene hydrazone is expected to be found not predominantly in soil and it’s not persistence estimate is based on its transformation in this medium. Its half-life in soil, 75 days (1800 hrs), does not exceeds the threshold of 120 days as per Annex XIII of REACH. Therefore, 1-Naphthalenecarboxaldehyde, 2-hydroxy-,(2-hydroxy-1-naphthalenyl)methylene hydrazone is estimated to be not persistent in the soil environment.
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