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Biodegradation in water: screening tests

The screening test inherent to the biodegradability of the substance was calculated using the software BIOWIN v4.10.

The results indicate that C.I. Solvent Yellow 33 is not expected to be readily biodegradable.


Biodegradation in water and sediment: simulation tests

Half-life period of C.I. Solvent Yellow 33 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 C.I. Solvent Yellow 33, it is concluded that the chemical is not persistent in water and sediment.


Biodegradation in soil

EPI Suite has estimated that C.I. Solvent Yellow 33 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 exceeds the threshold of 120 days as per Annex XIII of REACH.

Therefore, C.I. Solvent Yellow 33 is estimated to be not persistent in the soil environment.