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Ecotoxicological information

Short-term toxicity to fish

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Description of key information

In a reliable test (reliability category 1) for acute fish toxicity of methyl-p-toluate using Danio rerio the following effect concentrations were determined:
LC0 (96h): 12.5 mg/L (nominal)
LC50 (96h): 20.5 mg/L (nominal)
LC100 (96h): 50 mg/L (nominal)

Key value for chemical safety assessment

LC50 for freshwater fish:
20.5 mg/L

Additional information

In a reliable test (reliability category 1) for acute fish toxicity of methyl-p-toluate using Danio rerio the following effect concentrations were determined:

LC0 (96h): 12.5 mg/L (nominal)

LC50 (96h): 20.5 mg/L (nominal)

LC100 (96h): 50 mg/L (nominal)

Alterations of appearance and behaviour were observed between 12.5 and 100 mg/L in a dose dependent manner. Alterations of appearance and behaviour observed at 10 mg/L reversed after 72 hours and fish were without symptoms afterwards. No effects were observed at 1 mg/L.

In a non-reliable study (short exposure time, insufficient documentation), the fish LC50 for methyl-p-toluate was determined in a 24 hour exposure study using Oryzias latipes (10 fish per concentration group, vehicle: DMSO). Based on nominal concentrations, the LC50 (24h) was determined as 78.8 mg/L.