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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
Basic toxicokinetics
Administrative data
- Endpoint:
- basic toxicokinetics
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Expert Statement: Investigation of the reaction of sodium polysulfide solution with diluted hydrochloric acid. No standard guideline followed and the study was not performed accoridng to GLP.
Data source
Reference
- Reference Type:
- other company data
- Title:
- Unnamed
- Year:
- 2 010
- Report date:
- 2010
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
Test material
- Reference substance name:
- Sodium sulfide (Na2(Sx))
- EC Number:
- 215-686-9
- EC Name:
- Sodium sulfide (Na2(Sx))
- Cas Number:
- 1344-08-7
- Molecular formula:
- Na2Sx (x=1.5 - 5)
- IUPAC Name:
- disodium sulfanediide
Constituent 1
Results and discussion
Applicant's summary and conclusion
- Conclusions:
- Interpretation of results (migrated information): other: see conclusion
The reaction PSL / diluted hydrochloric acid clearly prove the decomposition reaction with formation of elementary sulfur and hydrogen sulfide according to the reaction scheme in the literature. (Hollemann Wiberg) - Executive summary:
The task of the intended investigations consisted in studying the reaction of diluted hydrochloric acid with aqueous sodium polysulfide solution (PSL) to simulate a poisoning process inside a human body. It should be confirmed that the reaction comprises a decomposition into hydrogen sulfide and elementary sulfur. The rate of the reaction and the quantity of the decomposition products should be evaluated.
The lab investigations of the reaction PSL / diluted hydrochloric acid clearly prove the decomposition reaction with formation of elementary sulfur and hydrogen sulfide according to the reaction scheme in the literature. (Hollemann Wiberg)
The following facts support this thesis:
- elementary sulfur has been identified and determined quantitatively
- hydrogen sulfide has been determined quantitatively.
- short time after the reaction after rinsing the reaction mixture with nitrogen the mixture is free of sulfid or polysulfide ions. The disappearance of all sulfid and polysulfide ions out of the reaction mixture can only be explained by the formation of hydrogen sulfide. It is flushed out of the system. The intermediate sulfanes aren`t gases and subsequently not volatile. They would give the colour reaction with Pb-acetate in the reaction mixture and would not appear in the wash bottles with NaOH because of their low volatility after rinsing with nitrogen.
The reaction rate of the decomposition reaction is high. According to the visual course of the reaction (spontaneous servere gas emission, immediate precipitation of sulfur) the reaction runs within seconds. And the reaction runs completely. Already a few minutes after rinsing the hydrogen sulfide out of the reaction mixture no sulfide and polysulfide ions can be detected.
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