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EC number: 287-477-0 | CAS number: 85535-85-9
- 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)
Description of key information
The harmful threshold (24 h) of a C14-17 chlorinated paraffin (41% chlorinated) to anaerobic bacteria from a domestic waste water treatment plant using the ETAD fermentation method was reported as 800 mg/L (considerd the 24h NOEC for this study). The respiration of microorganisms in activated sludge from a municipal sewage treatment plant over 3 h was unaffected by the presence of a C14-17 chlorinated paraffin (52% chlorinated) at concentrations of up to 2000 mg/L (considered the 3h NOEC for this study).
Key value for chemical safety assessment
Additional information
In an unpublished study (with only limited reporting in the final RAR), the toxicity of a C14-17 chlorinated paraffin (41% chlorinated) to anaerobic bacteria from a domestic waste water treatment plant has been examined using the ETAD fermentation tube method. The harmful threshold (24 hour; no further details given) was reported as 800 mg/l (considered the NOEC for this study) (Hoescht, 1976). The NOEC of 800 mg/L reported in this study will be used for the derivation of the PNEC.
In another unpublished study (with only limited reporting in expert reviews), the effect of a C14-17 chlorinated paraffin (52% chlorinated) on the respiration of micro-organisms in activated sludge recovered from a municipal sewage plant was examined in a study apparently based on OECD Guideline 209. No inhibition of respiration was seen over a 3 h period when sludge was exposed to the test substance, emulsified in water with nonylphenol ethoxylate (0.5 g/L), at concentrations up to 2000 mg/L (considered the NOEC for this study) (Hoescht, 1985 cited in BUA, 1992 and EU, 2005).
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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