The T-value in the score for hazard refers to acute toxicity. Underlying data for P, B, T and risk are from Leponex (clozapine) downloaded 2011-04-29. No new environmental information for clozapine is published on Fass.se (2018-09-04). It is voluntary for manufacturers to provide information about environmental impact on fass.se.
Fass environmental information for Leponex (downloaded 2011-04-29).
Persistence: "3% (aerobic, 28d, 20-24°C,OECD 301B) not readily biodegradable."
Bioaccumulation: "log Kow 4.1 (Avdeef, 2003), log D 3.4 (pH 7, calculated using the Novartis internal Cheminformatics InSilico Profiling Tool, Novartis Institute of Biomedical Research, based on pKa and logP values; pKa1 = 3.52, pKa2 = 7.57)." The company's conclusion is that the substance has the potential to be stored in aquatic organisms.
Acute toxicity: There is data for 3 trophic levels, lowest for fish (Oncorhynchus mykiss) 710 microg/L.
PPEC/PNEC is based on sales data in Sweden in year 2010. PEC/PNEC = 0.13 which gives the risk low.
Clozapine has previously been found in purified wastewater in Stockholm County (2005–2012). Clozapine has not been analyzed in recent years.
The reduction rate for clozapine in wastewater treatment plants in Stockholm County is between 28 and 49 %.
Author: The Pharmaceutical unit of Region Stockholm