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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

Effective concentration 50%: 290 mg/L
Effective concentration 10%: 48 mg/L
Effective concentration 90%: 1550 mg/L

Key value for chemical safety assessment

EC50 for freshwater algae:
290 mg/L
EC10 or NOEC for freshwater algae:
48 mg/L

Additional information

The short-term toxicity of 1,4 -Butenediol to algae has been studied according to Guideline DIN 38412 under non-GLP conditions using Scenedesmus subspicatus (new name: Desmodesmus subspicatus). The 72 hour EC50 value determined during this test was 290mg/L, the 72 hour EC 10 value was 48 mg/L, and the 72 hour EC90 was 1550 mg/L (BASF AG 1989) and indicates a low degree of toxicity to Desmodesmus subspicatus.