Registration Dossier
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EC number: 274-581-6 | CAS number: 70356-09-1
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data

Endpoint summary
Administrative data
Description of key information
Additional information
Stability:
Study on hydrolysis waived due to the extremely poor water solubility of the test item of 0.027 mg/L.
Biodegradation:
Both a study on anaerobic biodegradability and a study on (aerobic) inherent biodegradability revealed that the substance is not biodegradable.
Ultimate degradation in surface water (OECD 309)
The half-life, DT50, of the parent compound in natural water was determined to be 11.9 days at high dose (0.015 mg/L) and 11.2 days at low dose (0.005 mg/L). Under sterile conditions the parent compound degraded slower than in non-sterile conditions. The half-life was 60.2 days at a concentration of 0.015 mg/L. The parent compound degraded to two major metabolites, depending on the placement of the radiolabel and a common metabolite for both labels.
Biodegradation in sediment (OECD 308)
The half-life, DT50, of the parent compound in freshwater sediment was determined to be 124 days at 12 °C in a river water/sediment system. The half-life in the river water phase was 3.5 days at 12 °C and from the entire river water/sediment system the DT50 was determined to be 83 days at 12 °C.
Using a pond water/sediment system, the DT50 for the parent compound in the sediment phase was 152 days at 12 °C, for the pond water phase 2.4 days at 12 °C and for the entire pond water/sediment system, the DT50 was 113 days at 12 °C.
Bioaccumulation:
It is concluded from experimental results obtained from a fish dietary bioaccumulation study with rainbow trout that BMDBM is taken up by rainbow trout up to a certain extent resulting to a lipid normalized BMF which is far below 1 (BMF Lipid = 0.1218). BMDBM was eliminated from rainbow trout with a half-life of 3.83 days. These results indicate that the bioaccumulation and biomagnification potential is low.
Transport and distribution:
The computational approach (QSPR) for deriving the Koc is based on the real physical properties of the test item, i.e. the experimentally derived log Kow of 6.1. When using the geometric mean of the results of four different QSPR models, the resulting log Koc is 4.65 (Koc = 44242 L/kg). Based on this result BMDBM has to be considered as "immobile" in sediments or soil.
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