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EC number: 208-436-5 | CAS number: 528-50-7
- 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
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1999
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- - Principle of test:
The Knudsen effusion technique was applied
- Short description of test conditions:
The substance effuses through a small pinhole, of known area, in another wise sealed cell. The measurement of vapor pressure involves determining the rate of mass loss from the effusion cell. Measurements were made under isothermal conditions. The temperature was measured with a precision of (0.1 K, by a thermocouple in contact with an aluminum capsule that almost completely surrounds the effusion cell. The mass loss rate was continuously recorded using a Cahn 2000 recording electrobalance. The back-pressure in the TGA system was maintained at 10-5 Pa, which has been noted to be sufficient so as to provide accuracy in the 10-4 Pa range of vapor pressures. Further details of the technique are provided elsewhere (Oja and Suuberg, 1997).
- Parameters analysed / observed: mass loss rate - GLP compliance:
- no
- Type of method:
- effusion method: Knudsen cell
- Specific details on test material used for the study:
- Cellobiose is clearly identified by the information provided in the publication:
- molecular formula: C12H22O11
- molecular weight: 342.3
- CAS Reg. No.: 528-50-7 - Key result
- Temp.:
- 474.23 K
- Vapour pressure:
- ca. 0.003 Pa
- Conclusions:
- In a study using the Knudsen effusion technique for the low vapor pressure cellobiose, a vapor pressure of 0.0026 Pa at 474.23 K, i.e. 201.08°C, was determined. This results allows to conclude that the vapor pressure of cellobiose is 0 at ambient temperature.
- Executive summary:
In a study using the Knudsen effusion technique for the low vapor pressure cellobiose, a vapor pressure of 0.0026 Pa at 474.23 K, i.e. 201.08°C, was determined. This results allows to conclude that the vapor pressure of cellobiose is 0 at ambient temperature.
Reference
The publication expresses the vapour pressure as a function of the temperature for the measure temperature range, i.e 474 to 488 K.
The function is: ln(VP[Pa]) = 70.3 - 36264/T[K], with VP being the vapour pressurer in Pa and T the tempertaure in Kelvin. Using this function to extrapolate the vapour pressure to 20°C results in a vapour pressure of 6.4e-24 Pa.
Description of key information
In a study using the Knudsen effusion technique for the low vapor pressure cellobiose, a vapor pressure of 0.0026 Pa at 474.23 K, i.e. 201.08°C, was determined. This results allows to conclude that the vapor pressure of cellobiose is 0 at ambient temperature.
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 20 °C
Additional information
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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