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EC number: 215-211-5 | CAS number: 1313-82-2
- 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
The majority of data on the physical and chemical properties of sodium sulfide (commercial form, type ca. 60 %) were provided by new testing in accordance with GLP: melting point, boiling point, density, particle size (and dustiness testing), water solubility, auto flammability, flammability, phyrophoric properties, and pH testing (without GLP). DSC analysis was also performed with sodium sulfide, anhydrous.
Additional available data on the physical and chemical properties of sodium sulfide, anhydrous was taken from public domain reviews and handbooks including the CRC (2008), Merck (2006), and Gmelin database (2009): appearance, melting point, density, water solubility. It is noted here thathandbook data for physico-chemical properties are considered to be from a trusted source acc. to "ECHA, Guidance on information requirements and chemical safety assessment – Chapter R.7a: Endpoint specific guidance" and therefore, theses data could be regarded as valid.
Waivers are proposed for boiling point (anhydrous form), vapour pressure, partition coefficient, surface tension, flash point, flammability in contact with water, explosiveness, oxidizing properties, stability in organic solvents, dissociation constant and viscosity , based on intrinsic properties of the substance oron the criteria as laid down in regulation (EC) 1907/2008 as described above.
If available, the values for the anhydrous form and the hydrated, commercial form (type ca. 60 %) are presented.
Summary of results:
Property |
Value for sodium sulfide(commercial form, type ca. 60 %) |
Value for sodium sulfide (anhydrous) |
Substance type |
Inorganic substance |
Inorganic substance |
Appearance/physical state/colour |
Yellow flakes under atmospheric pressure and room temperature |
Solid crystals, granules, lumps or flakes, colour description: between clear, white, yellow, pink and red |
Melting/freezing point |
69 to 93 °C |
>600 °C |
Boiling point (at 1013 hPa) |
No boiling point; test item oxidises after melting |
Not required if melting point is above 300 °C |
Density at 20⁰C |
Relative density is 1.64 at room temperature |
Relative density is 1.9 at room temperature |
Particle size distribution |
D50: 3,500 µm (sieving analysis) MMAD: 33.93 µm |
no data |
Vapour pressure |
Not required if melting point is above 300 °C. The lower MP of the hydrate is only based on the crystal water. |
Not required if melting point is above 300 °C |
Partition Coefficient |
Not required for inorganic substances |
Not required for inorganic substances |
Water solubility at 20⁰C |
178 g/L at 20 °C and pH 12.8 |
Between 124 – 290 g/L (at between 0 – 40 °C) |
Surface Tension at 25⁰C |
Not expected to be surface active |
Not expected to be surface active |
Flash point |
Not required for inorganic solid substances |
Not required for inorganic solid substances |
Self ignition temperature |
No self-ignition was observed up to 430 °C |
no data |
Flammability |
Non-flammable and no pyrophoric properties; no flammability in contact with water expected |
no data |
Explosiveness |
Not expected to possess explosive properties |
no data |
Oxidising properties |
No oxidising properties expected |
no data |
Stability in organic solvents and identity of relevant degradation products |
Not considered critical for an inorganic substance |
Not considered critical for an inorganic substance |
Storage stability |
May be corrosive to carbon steel and aluminium |
- |
pH |
12.9 (1 % solution) 13.1 (saturated solution) |
no data |
Dissociation constant |
No relevant functional groups, thus considered not required |
No relevant functional groups, thus considered not required |
Viscosity |
Not required for solids |
Not required for solids |
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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