Registration Dossier
Registration Dossier
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EC number: 435-580-8 | CAS number: 56553-60-7
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 12.94 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 1.294 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 1.294 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 100 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- no exposure of sediment expected
Sediment (marine water)
- Hazard assessment conclusion:
- no exposure of sediment expected
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- no exposure of soil expected
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Sodium triacetoxyborohydride decomposes upon contact with water with a half-life of 38-85 seconds by liberating hydrogen and boric acid as products. Thus, the environmental fate of Sodium triacetoxyborohydride is driven boric acid, which is taken into account for assessment of ecotoxicological toxicitxy. The available data on short-term and long-term aquatic toxicity of Sodium triacetoxyborohydride and boric acid resulted in the lowest NOEC of LC50 of 6.6 mg/L Boron (B) for zebrafish. When adjusted for the mole fraction of Boron/Sodium triacetoxyborohydride the value is 129.4 mg/L.
Sodium triacetoxyborohydride is not directly applied to soil. Additionally, boric acid is inorganic and has a low high water solubility (49 g/L) and a low log Kow (-1.09) and therefore the potential for adsorption can be regarded as low. Consequently, effect on sediment or toxicity to terrestrial organisms can be excluded.
Conclusion on classification
The available data on environmental effects of the test substance do not meet the criteria for classification according to Regulation (EC) 1272/2008.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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