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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

Key study testing was completed on salt water aquatic invertebrates.  All species had test data giving LC50 (96h) <0.1mg/l.  The highest value of 0.027 mg/l is quoted as the key value for CSA assessment

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
0.027 mg/L
EC50/LC50 for marine water invertebrates:
0.027 mg/L

Additional information

The 96-h LC50 of 0.027 mg/L quoted for the marine shrimp (Crangon crangon)in the Maddock & Taylor (1976), is the lowest identified value and will be used in the CSA.

There have been very few studies of the acute toxicity of lead to marine animals, primarily because of the difficulty of maintaining solutions of lead in sea water at high enough concentration to cause toxic effects.

The most reliable data available at the present time is that of Portmann and Wilson (1971) who report 48 hour LC50 values for the pink shrimp (Pandalus montagni) and the cockle of 375 and 500 mg/L respectively.

The following information is taken into account for short-term toxicity to aquatic invertebrates for the derivation of PNEC:

Key study testing was completed on salt water aquatic invertebrates. All species had test data giving LC50 (96h) of 0.1 mg/L and below. The lowest LC50 value of 0.027 mg/L for marine invertebrates is quoted as the key value for CSA assessment

Value used for CSA:

EC50/LC50 for freshwater invertebrates: 0.027 mg/L

EC50/LC50 for marine water invertebrates: 0.027 mg/L