Registration Dossier
Registration Dossier
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EC number: 228-085-1 | CAS number: 6117-80-2
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.065 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.65 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.006 mg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 8 934 mg/L
- Assessment factor:
- 1
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.24 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.02 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 0.009 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
1,4 -Butenediol (B2D) should not be classified as hazardous to the aquatic environment according to the criteria laid out in Regulation (EC) 1272/2008 or in Directive 67/548/EEC based on results of an OECD Method 203 short-term fish study = 96 hr LC50 value of >100 mg/L as well as a 96 hr LC0 value of >100 mg/L (BASF AG 2005). In addition, the acute toxicity of 1,4 -butenediol to freshwater invertebrates (Daphnia magna) was tested under non-GLP conditions and yielded a 48 hour EC50 value of 65.2 mg/L, a 48 hour EC0 value of 31.3 mg/L, and a 48 hour EC100 value of 125 mg/L (BASF AG 1988). 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 toDesmodesmus subspicatus. The short-term toxicity of 1,4 -Butenediol to microorganisms has been studied according to Guideline DIN 38412 under non-GLP conditions using Pseudomonus putida. The 17 hour EC10 value determined during this test was 8933.7 mg/L (BASF AG 1988). 1,4 -Butenediol has a LogKow of -0.9, and a BCF of 3.16, and is readily biodegradable.
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