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EC number: 275-031-8 | CAS number: 70942-01-7
- 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
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
No biodegradation expected.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
Additional information
The substance CAS 70942-01-7 was not tested for ready biodegradability, but four tests were performed to measure BOD5 and BOD/COD ratio. According to the Guidance on information requirements and Chemical Safety Assessment, Chapter R.7b: Endpoint specific guidance (Version 1.1, May 2008), information on the 5-day biochemical oxygen demand (BOD5) can be used for classification purposes only when no other measured degradability data are available; furthermore an estimation was performed on the substance with BIOWIN 4.10. The QSAR based screening criterion for identifying substances for persistency (P and vP) confirmed that the substance is expected to be persistent and this estimated behaviour is supported by the results obtained from the BOD5:COD ratio studies available.
Furthermore, a Zahn-Wellens/EMPA study (Novartis Services AG., 1997) was initiated on CAS 4193-55-9, the analogous substance with identical organic part and salification with sodium instead than sodium/potassium; the test was stopped because after 3 hours the substance demonstrated an adsorption of 66 %, and an 83.6 % after 24 hours.
One ready biodegradability and two inherent studies were performed on CAS 16470-24-9, the analogous substance, dihydroxyethyl derivative, tetrasulphonated. This analogous can be considered as a conservative representative, since the higher water solubility (650 mg/l vs 13.45 mg/l of CAS 70942-01-7) will lead to a better availability in the water compartment.
In the ready biodegradability study (Ciba Geigy 1992) a degradation of 1.2 % in 28 days was recorded, while the inherent studies (Ciba Geigy 1992 and 1997) indicated very low or no degradation at all.
As a conclusion the substance to under registration, CAS 70942-01-7, is expected to be neither readily nor inherently biodegradable.
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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