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EC number: 800-309-8 | CAS number: 231297-75-9
- 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

Endpoint summary
Administrative data
Description of key information
Abiotic degradation
Phototransformation and hydrolysis are the main abiotic degradation pathways for a substance.The magnesium sulfonate target substance (CAS 231297-75-9) is neither susceptible for phototransformation in air, water and soil nor for hydrolysis under environmental conditions.The test substance is a complex mixture (UVCB) for which the test guideline for hydrolysis is not recommended with components having different hydrolytic rates. The representative structure of the test substance contains a phenyl sulphonate functional group and this suggests that hydrolysis at environmentally relevant pH levels and temperatures would not readily occur.
Biotic degradation
The magnesium sulfonate target substance (CAS 231297-75-9) is not expected to be biodegradable based on biodegradation studies with magnesium sulfonate and calcium sulfonate read-across substances.Biodegradability of a calcium sulfonate read-across substance (CAS 70024-69-0) was investigated according to OECD Guideline 301D (key information). The effects of the test substance were assessed based on chemical oxygen demand (COD) measurements using activated sludge from a domestic wastewater plant as inoculum. The test substance attained 8 % degradation during the test duration of 28 days.In a test assigned as supporting information, magnesium sulfonate read-across substance (CAS 71786-47-5; Sanitised, H., 1995) was investigated concerning biodegradability following OECD Guideline 301 B. Activated sludge from a domestic wastewater plant was used as inoculum without pre-adaption. The test substance attained only 1.5 % degradation at the end of the test (after 28 days).
Bioaccumulation
The magnesium sulfonate target substance (CAS 231297-75-9) is not expected to bioaccumulate.Bioaccumulation in aquatic biota is expected for substances possessing a partition coefficient (logPow) in the range of 4.5 to 6 (ECHA Guidance R.11 PBT Assessment). A higher logPow is probably more an effect of solubility than lipophilicity.The magnesium sulfonate target substance (CAS 231297-75-9)possesses a logPow of 22.17 (EPIWIN prediction), thus no strong potential to bioaccumulation is expected. This is supported by the predicted low Bioconcentration Factor (BCF) of 70.8 L/kg (Chemservice S.A., 2012c).Furthermore, based on the assessment of various sulfonates (Sanitised, 2012), the hazard profile does neither meet the B nor the vB criterion.
Transport and distribution
A Mackay Level III fugacity modeling calculation was performed with EPIWIN by Chemservice S.A. (2012b). With a mass amount of 99.4 % for soil, it is clear thatthe magnesium sulfonate target substance (CAS 231297-75-9)will mainly be present in soil and is likely to persist there rather than in other environmental compartments.
A soil adsorption study ofthe magnesium sulfonate target substance (CAS 231297-75-9) is technically not feasible. A prediction with KOCWIN v2.00 revealed a logKoc of 13.3 for C20 alkyl chains. The Henry´s Law Constant is predicted as 0.0613 Pa-m³/mol (Bond-Method, EPIWIN). This value is used in the chemical safety assessment in order calculate the PNECsediment (freshwater and marine water) of themagnesium sulfonate target substance (CAS 231297-75-9).
Additional information
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