Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Mineral Paraffin Oilis a complex UVCB substance, which is difficult to test for biodegradation in the experimental systems. The estimated QSARs data on environmental degradation ofMineral Paraffin Oilcomponents for carbon chain length of C15 and above are summarized in table below. Overall, the QSAR estimated data suggest that this substance will degrade fast in the environment.

 

Table. Degradation rates ofMineral Paraffin Oilcomponents

Degradation rate in water:

Abiotic transformation:

Hydrolysis is not a relevant degradation route for the substance.

 

Biotic transformation:

DT50 (Pentadecane) = 8.7 days (208.1hours)

DT50 (Triacontane) = 15 days (360 hours)

 

Degradation rate in sediment:

DT50 (Pentadecane) = 78 days (1873 hours)

DT50 (Triacontane) = 135 days (3240 hours)

 

Degradation rate in soil:

DT50 (Pentadecane) = 17.34 days (416.2 hours)

DT50 (Triacontane) = 30 days (720 hours)

 

Degradation rate in air:

DT50 (Pentadecane) = 11.56 hours

DT50 (Triacontane) = 6.52 hours

 

 

Based on the data summarized in this section,Mineral Paraffin Oilis considered to degrade rapidly via abiotic or biotic degradation paths.