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EC number: 231-442-4 | CAS number: 7553-56-2
- 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
Henry's Law constant
Administrative data
Link to relevant study record(s)
- Endpoint:
- Henry's law constant
- Type of information:
- other: data compilation
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: peer-reviewed compilation of Henry's Law constants; data also quoted in the web library of the National Institute for Standard and Technology (NIST)
- Guideline:
- other: Data complilation
- H:
- 0.031 Pa m³/mol
- Temp.:
- 20 °C
- Atm. press.:
- 101 325 Pa
- Remarks on result:
- other: Berdnikov and Bazhin [1970]
- H:
- 0.03 Pa m³/mol
- Temp.:
- 20 °C
- Atm. press.:
- 101 325 Pa
- Remarks on result:
- other: Palmer et al. [1985]
- H:
- 0.033 Pa m³/mol
- Temp.:
- 20 °C
- Atm. press.:
- 101 325 Pa
- Remarks on result:
- other: Wagman et al. [1982]
- Conclusions:
- The influence of the Henry's Law constant on the partition coefficent is negligible. Nevertheless the highest value of the three presented values was chosen as worst case assumption.
The Henry’s law constants for I2 at 20 °C and 101325 Pa were 0.03059, 0.02961, 0.03257 pa m3/mol determined by Berdnikov and Bazhin [1970], Palmer et al. [1985] and Wagman et al. [1982], respectively.
Reference
Berdnikov VM and Bazhin NM (1970). Oxidation-reduction potentials of certain inorganic radicals in aqueous solutions, Russ. J. Phys. Chem., Engl. Transl., 44, 395 -398.
Palmer DAR, Ramette RW, and Mesmer RE (1985). The hydrolysis of iodine, Equilibria at high temperatures, J. Nucl. Mater., 130, 280 -286.
Wagman DD, Evans WH, Parker VB, Schumm RH, Halow I, Bailey SM, Churney KL, and Nuttall RL (1982). The NBS tables of chemical thermodynamic properties; Selected values for inorganic and C1 and C2 organic substances in SI units., J. Phys. Chem. Ref. Data, 11, suppl. 2.
Description of key information
The Henry’s law constants for I2 at 20 °C and 101325 Pa were 0.03059, 0.02961, 0.03257 pa m3/mol determined by Berdnikov and Bazhin [1970], Palmer et al. [1985] and Wagman et al. [1982], respectively.
Key value for chemical safety assessment
- Henry's law constant (H) (in Pa m³/mol):
- 0.033
- at the temperature of:
- 20 °C
Additional information
The influence of the Henry's Law constant on the partition coefficent is negligible. Nevertheless the highest value of the three presented values was chosen as worst case assumption.
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