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EC number: 220-971-6 | CAS number: 2950-43-8
- 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
Long-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
Based on a study with the surrogate substance acc. to OECD 211, the long-term NOEC for invertebtrates was deemed as 0.31 mg/L (measured concentrations) (BASF AG, 2007).
May cause long term effects to aquatic inverterates
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 0.31 mg/L
Additional information
Since data for the test substance hydroxylamine-O-sulphonic acid (CAS 2950-43-8) are not available, results of the surrogate substance bis(hydroxylammonium) sulfate (CAS 10039-54-0) are used in a reliable read-across approach to evaluate the test substance.
There is one study available on the long term toxicity of Bis(hydroxylammonium) sulphate to aquatic invertebrates (BASF AG, 2007).
The test was conducted according to OECD 211. Because of the rapid dissociation/degradation of BHAS semi-static test conditions with renewal of test solutions in 24 hour intervals were chosen. In addition concentrations were measured. Samples for analysis were taken once a week during the test. For each concentration the freshly prepared test solution (without daphnia) and the corresponding 24 h old test solution (with daphnia) were analysed. Six (nominal) test concentrations ranging from 0.0156 to 1 mg/L were used. pH values in the test vials ranged from 7.6 to 8.3.
After 21 days of exposure, no effects on reproduction and weight of the parent animals were observed up to the highest concentration tested. Since the length of the daphnids exposed to this concentration was significantly reduced, the NOEC for this endpoint is 0.5 mg/L (nominal, LOEC 1.0 mg/L). Using the mean of the measured concentrations, NOEC and LOEC for the length of the animals are 0.31 mg/L and 0.62 mg/L. Since the measured concentrations are below 80 % of the nominal concentrations, the analytically determined concentrations should preferably be used for further assessment.
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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