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Diss Factsheets
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EC number: 231-821-4 | CAS number: 7757-83-7
- 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
Water solubility
Administrative data
Link to relevant study record(s)
- Endpoint:
- water solubility
- Type of information:
- other: Handbook data
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Remarks:
- From a trusted source acc. to "ECHA, Guidance on information requirements and chemical safety assessment – Chapter R.7a: Endpoint specific guidance".
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Not applicable - Handbook data
- GLP compliance:
- not specified
- Type of method:
- other: no data
- Key result
- Water solubility:
- 307 000 mg/L
- Temp.:
- 25 °C
- Remarks on result:
- other: no pH was stated
- Details on results:
- Handbook data considered to be from a trusted source acc. to "ECHA, Guidance on information requirements and chemical safety assessment – Chapter R.7a: Endpoint specific guidance". However, no pH value was given in the CRC handbook for the water solubility of sodium sulphite.
- Conclusions:
- Interpretation of results: very soluble (> 10000 mg/L)
According to the reference, the water solublity of sodium sulphite is 307000 mg/L. In conclusion the test substance is very soluble. No pH was given. - Endpoint:
- water solubility
- Type of information:
- other: Peer reviewed data
- Adequacy of study:
- supporting study
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- secondary literature
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Not applicable - Peer reviewed data
- GLP compliance:
- not specified
- Type of method:
- other: no data
- Water solubility:
- 125.4 g/L
- Temp.:
- 0 °C
- Water solubility:
- 283 g/L
- Temp.:
- 80 °C
- Conclusions:
- Interpretation of results (migrated information): very soluble (> 10000 mg/L)
Sodium sulfite has a water solubility of 125.4 g/L at 0°C and of 283 g/L at 80°C. - Endpoint:
- water solubility
- Type of information:
- other: authoritative secondary source
- Adequacy of study:
- supporting study
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- secondary literature
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Not applicable - authoritative secondary source
- GLP compliance:
- not specified
- Type of method:
- other: no data
- Water solubility:
- 280 g/L
- Temp.:
- 33.4 °C
- pH:
- ca. 9.8
- Remarks on result:
- other: 28 g/100 g solvent
- Conclusions:
- Interpretation of results: very soluble (> 10000 mg/L)
Approximately 280 g sodium sulfite are soluble in one litre solvent. The substance has its maximum solubility at 33.4 °C; at higher temperatures it is less soluble in water. The pH was determined to be 9.8. - Endpoint:
- water solubility
- Type of information:
- other: Handbook data
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Remarks:
- From a trusted source acc. to "ECHA, Guidance on information requirements and chemical safety assessment – Chapter R.7a: Endpoint specific guidance".
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Not applicable - Handbook data
- GLP compliance:
- not specified
- Type of method:
- other: no data
- Water solubility:
- other:
- Temp.:
- 25 °C
- Remarks on result:
- other: soluble in 3.2 parts water at approx. 25 °C
- Details on results:
- Handbook data considered to be from a trusted source acc. to "ECHA, Guidance on information requirements and chemical safety assessment – Chapter R.7a: Endpoint specific guidance". However, no pH value was given in the Merck Index for the water solubility of disodium sufite.
- Conclusions:
- According to the reference, disodium sulfite is soluble in 3.2 parts of water.
Referenceopen allclose all
No pH value was given but data could be regarded as valid according to "ECHA, Guidance on information requirements and chemical safety assessment – Chapter R.7a: Endpoint specific guidance".
Value from general accepted authoritative secondary source. No data available for pH value.
pH Concentration: 1 wt %
No pH value was given but data could be regarded as valid according to "ECHA, Guidance on information requirements and chemical safety assessment – Chapter R.7a: Endpoint specific guidance".
Description of key information
Sodium sulfite is highly soluble in water.
Key value for chemical safety assessment
- Water solubility:
- 307 g/L
- at the temperature of:
- 25 °C
Additional information
For the evaluation of this endpoint data from the CRC handbook were used as key information, supported by some other handbook data. According to "ECHA, Guidance on information requirements and chemical safety assessment – Chapter R.7a: Endpoint specific guidance", handbook data are considered to be from a trusted source. These handbooks including the CRC handbook.
According to the key information, sodium sulfite is highly soluble in water (determined at 25 °C; no pH was given). This information is supported by various other references:
Merck Index: Sodium sulfite is soluble in 3.2 parts water at 25 °C.
Kirk Othmer: Approximately 280 g sodium sulfite are soluble in one litre of water. The substance has its maximum solubility at 33.4 °C; at higher temperatures it is less soluble in water. The pH was determined to be 9.8.
IARC: Sodium sulfite has a water solubility of 125.4 g/L or 283 g/L at 0°C or 80 °C, respectively.
All these data confirm that sodium sulfite is highly soluble in water.
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