Registration Dossier
Registration Dossier
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EC number: 213-424-8 | CAS number: 947-04-6
- 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

Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
- Endpoint:
- toxicity to microorganisms
- Data waiving:
- other justification
- Justification for data waiving:
- the study does not need to be conducted because the substance is found to be readily biodegradable and the applied test concentrations are in the range of concentrations that can be expected in the influent of a sewage treatment plant
Reference
Description of key information
for the influent of the sewage treatment plant was calculated according to the following formula:
water*106/EFFLUENT stp
al water was calculated to be 10.8 kg/d based on the assumption that a waste water stream saturated with Dodecane-12 -lactam is continuously released from the production site (water solubility 0.3 g/l), daily emission of waste water 36 m3; the effluent of the STP in Marl (Production site) is 11.3*106 l/d. The resulting influent concentration is thus 0.95 mg/l.
to the fact that the substance is readily biodegradable at this concentration (83% within 28 days, >60% in 10 day-window) it is assumed that the applied concentration is not inhibitory to bacteria and a possible exposure up to the amnt of the PEC poses no risk to sewage sludge bacteria.
The local PEC for STP was calculated according to chapter R.16.5.5.4 Modelling STP, Equation R.16-23. The calculated value was compared with the concentration used in the test on ready biodegradability (see chapter 5.2.1). The PEC is 20 times lower than the concentration used in the test on ready biodegradability. Since bacteria in this test degraded the substance by more than 60% in 10 days, it is assumed that the substance is not toxic to microorganisms.
Key value for chemical safety assessment
Additional information
The PEC for the influent of the sewage treatment plant was calculated according to the following formula:
C local influent = E local water*106/EFFLUENT stp |
E local water was calculated to be 10.8 kg/d based on the assumption that a waste water stream saturated with Dodecane-12 -lactam is continuously released from the production site (water solubility 0.3 g/l), daily emission of waste water 36 m3; the effluent of the STP in Marl (Production site) is 11.3*106 l/d. The resulting influent concentration is thus 0.95 mg/l.
The concentration used for the ready biodegradability test (see 5.2.1.) was 20.9 mg/l. The calculated PEC is thus 20 times lower. Due to the fact that the substance is readily biodegradable at this concentration (83% within 28 days, >60% in 10 day-window) it is assumed that the applied concentration is not inhibitory to bacteria and a possible exposure up to the amount of the PEC poses no risk to sewage sludge bacteria.
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