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EC number: 231-820-9 | CAS number: 7757-82-6
- 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
Production: production of sodium sulfate is 4.6 million tonnes/year (1999), of which approximately 50% a by product of the chemical industry
and the remainder is extracted from natural deposits. Due to Sodium sulphate occurring naturally it can be considered to form part of the sulfur cycle. It is readily utilized by bacteria fungi and many aerobic and anaerobic prokaryotic species. For this reason no specific biodegradation tests are
required. A summary of the potential pathways involved in the cycle of sodium sulphate are shown below. Reference (OECD SIDS 2005) (The sulphur Cycle Microbiology Prescott Harley and Klein 1996) (College of Biological sciences 1993)
Key value for chemical safety assessment
Additional information
Microbes play pivotal roles in the Sulfur cycle. In the case of sulfate:
Sulfate provides microorganisms with the possibility of carrying out sulfate reduction to derive their energy. Sulfate is used as an electron acceptor to form sulfide (H2S) this is a process known as dissimilatory reduction and this occurs anaerobically. Alternatively reduction of sulphate for use in amino acid syntheses for example can also occur and is known as assmilatory reduction forming organic sulfur. Other microorganisms reduce the elemental sulpher further still. Sulphite is also a critical intermediate that can be reduced to sulfide as well as oxidized back to sulphate completing the cycle.
Some Species commonly associated with these steps are:
Aerobic sulfur oxidation - occurs in Thiobacillus Beggiatoa and Thiothrix sp
Anaerobic sulfur oxidation - occurs in Chlorobium and Chromatum and Desulfovibria sp
Sulfur reduction - occurs in Alteromonas,Clostridium sp
Summary written using data obtained from (The sulphur Cycle Microbiology Prescott Harley and Klein 1996)
A schematic representation of the sulfur cycle can be found on (http://www.lenntech.com/sulfur-cycle.htm).
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.