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Permethrin

CATEGORIES


ALIASES

Nix, Nix®, Permethrin, Good Neighbor Pharmacy Lice Treatment, Good Sense Lice Treatment, Leader Lice Treatment, Lice Treatment, Lyclear, Nix, Nix Complete Maximum Strength Lice Elimination, Permethrin, Smart Sense Lice Treatment, Topcare Lice Treatment


SUBSTANCES

permethrin


ENVIRONMENTAL CONCERN: MODERATE
A pyrethroid insecticide commonly used in the treatment of lice infestations and scabies. It is a yellow to light orange-brown, low melt-ing solid or viscous liquid.

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MODERATE
The T-value in the score for hazard refers to acute toxicity. Underlying data for P, B, T and risk are from Fass Nix (permethrin) (downloaded 2013-09-03). No new environmental information for permethrin is published on Fass.se (2018-09-06). It is voluntary for manufacturers to provide information about environmental impact on Fass.se.

Below is Hazard and Risk from Fass environmental information for Nix (permethrin) (downloaded 2013-09-03)


Fara
Persistence: The half-life of soil degradation is 5-55 days. It is indicated that permethrin is slowly degraded in the environment.

Bioaccumulation: Permethrin has a high potential for bioaccumulation (BCF 400-20 000 [fish]). The substance has high log KOW (6.5 i 25°C) and the properties are confirmed in studies on e.g. fish.

Acute toxicity: There is data for 3 trophic levels, lowest for crustacean (D. magna) 0.0001 mg/L.

Risk
PEC/PNEC is based on sales data in Sweden in year "in the last year" (unclear what year it means). PEC/PNEC = 1.7 which gives the risk moderate.

REFERENCES

  1. Stockholms läns landsting. Miljöklassificerade läkemedel 2014–2015. Stockholm; 2014.