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EC number: 215-686-9 | CAS number: 1344-08-7
- 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
Endpoint summary
Administrative data
Description of key information
Additional information
Na2Sx will disassociate and react almost instantly when entering the environment (see chapter 5) to SO4. According to column II annex VII and VIII these reasonings can be considered valid to justify waiving of all ecotoxicity testing with the parent substance.
Data from Sodium Sulfate are therefore used for the registered substance.
Many publications were found on short-term toxicity of sodium sulfate to aquatic organisms.
Only one study with fish was reliable with restrictions, Mountet al.(1997). The study was performed according to EPA guideline and with determination of test substance concentrations. It was not performed under GLP.
Pimephales promelas was exposed to a range of sodium sulfate concentrations in reconstituted water. Fish appeared to be the least sensitive with an LC50 of 7960 mg/L.
Many publications are available on short-term toxicity of sodium sulfate to invertebrates.
The key study, performed by Davies and Hall (2007) was with Daphnia magna. The tests were were considered valid with restrictions. Davies and Hall performed tests at several water hardness levels and 3 Ca:Mg ratios. The toxicity of sodium sulfate decreased with increasing water hardness. At a water hardness of 25 mg CaCO3/L and a Ca:Mg ratio of 0.7 the LC50 was 1766 mg/L, this was the lowest value found. Under standard conditions the LC50 was 4736 mg/L.
No valid studies with algae were found. Patrick et al. (1968) performed a 120-hour growth test with Nitzschia linearis. The test duration of 120 hours and the tested species N. linearis is different than recommended in the guideline. The reference test data are comparable to that of data for OECD approved algae species. The response of the tested diatom species is therefore likely to be similar to approved test species. Due to the very low toxicity of sodium sulfate in all ecotoxicological endpoints this study described by Patrick et al., can be used with care. An EC50 value of 1900 mg/L was found. This result shows that sodium sulfate is not a substance of concern for algae.
Tokuz and Eckenfelder (1979) and Tokuz (1986)found that the increasing concentrations of sodium sulfate did not cause any appreciable deterioration in effluent quality in terms of effluent suspended solids and COD. The eflluent COD stayed more or less at a constant level and suspended solids concentration increased slightly. The rate of increase of salinity was much faster for the sodium sulfate system but no negative effects were seen. Effects were measured by the efficiency of DOC removal.There was no effect on the microorganisms up to approximately 8 g/L over a period of 37 days. With respect to the high NOEC values, sodium sulfate is not expected to be hazardous for activated sludge. This study was also found valid with restrictions.
One long-term result was found for invertebrates (Soucek, 2007), this study was considered valid with restrictions. The LOEC for reproduction of Ceriodaphnia dubia was 1329 mg/L, which was the lowest result obtained in this test. The NOEC (taken from a graph) is approx. 1109 mg/L.
Overall it can be concluded that sodium sulfate has no acute adverse effect on aquatic organisms. The long-term result shows that there is no concern either.
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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