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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

The data show that the test substance is toxic to terrestrial organisms.

Additional information

No data are available for the toxicity of N-phenyl-1-naphthylamine to terrestrial organisms. Therefore, information from a supporting, structurally analogue compound (naphthalene) was taken into account.

Data for the toxicity of naphthalene are available for annelids, collembolans and plants (lettuce and white clover). Given the available information, the collembolan species Folsomia candida was the most sensitive organism with a NOEC value (28d) of 88 µmol/kg soil dw. The sensitivity regarding adult mortality of the oligochaete species Enchytraeus crypticus ranged between 28d-NOEC values of 220 µmol/kg soil dw and an 28d-EC100 of 2045 µmol/kg soil dw. Regarding plant species, the tested substance range (0-100 mg/kg soil) showed no effects on seedling growth so that minimum limit concentrations of 100 mg/kg soil were deducted as EC50(14d) for Lactuca sativa and EC0(15d) for Trifolium repens. Additional data on growth are available for Lactuca sativa in an aqueous medium where the EC50(16d) was determined at 13 mg/L, a result of lesser importance for terrestrial toxicity.

For Trifolium repens 17% DNA polymorphisms were observed at 50 mg/kg soil showing naphthalene genotoxicity in plants.