Miljöpåverkan
Nitrofurantoin
Miljörisk:
Risk för miljöpåverkan av nitrofurantoin kan inte uteslutas då ekotoxikologiska data saknas.
Nedbrytning:
Det kan inte uteslutas att nitrofurantoin är persistent, då data saknas.
Bioackumulering:
Nitrofurantoin har låg potential att bioackumuleras.
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Detaljerad miljöinformation
Detailed background information
Environmental Risk Classification
Predicted Environmental Concentration (PEC)
PEC is calculated according to the following formula:
PEC(μg/L) = (A*109*(100-R))/(365*P*V*D*100) = 1.5*10-6*A(100-R)
PEC = 0,05 μg/L
Where:
A = 321,5218 kg (total amount API of nitrofurantoin in Sweden year 2019, data from IQVIA) (Ref. 1).
R = removal rate = 0% (no data available)
P = number of inhabitants in Sweden = 9*106
V (L/day) = volume of waste water per capita and day = 200 (ECHA default) (Ref. 2)
D = factor for dilution of waste water by surface water flow = 10 (ECHA default) (Ref. 2)
Ecotoxicological studies
No ecotoxicological data available.
Degradation
No degradation data available.
Bioaccumulation
An experimentally derived Log Kow of -0,47 (unknown method) (Ref. 3) indicates that nitrofurantoin has low potential for bioaccumulation.
Log Kow <4 which justifies the phrase “Nitrofurantoin has low potential for bioaccumulation”.
Excretion (metabolism)
Excretion of nitrofurantoin occurs via glomerular filtration (ca 20%) and secretion through proximal tubule (ca 80%). Between 30 and 50% of the dose is excreted in urine as active form (ref. 4).
References:
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Data from IQVIA ”Consumption assessment in kg for input to environmental classification v1 - updated 2020 (data 2019)”.
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ECHA, European Chemicals Agency. Guidance on information requirements and chemical safety assessment. Ver 2.1, 2011. http://echa.europa.eu/documents/10162/13643/information_requirements_r2_en.pdf
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Hansch et al. (1995), ChemID+, US National Library of Medicin, National Institutes of Health, http://chem.sis.nlm.nih.gov/chemidplus/chemidheavy.jsp
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SPC (Summary of Product Characteristics) Furadantin, 2017-12-05, www.fass.se