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EC number: 200-823-7 | CAS number: 74-94-2
- 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
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:
- 1959-01-26
- 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:
- Effusion method: Knudsen cell
The vaporization chamber consisted of a small monel cylinder with an i.d. of 15 mm and a depth of 20 mm. It was fitted with an open cap at the top which compressed the platinum sheet containing the orifice between two thin copper gaskets to complete the closure. The orifices were carefully drilled, inspected under the microscope for imperfections and burrs and their diameters measured by a comparator. The two used had diameters of 0.0374 and 0.0776 cm and ratios of thickness to radius of 0.183 and 0.313,
respectively.
Effusion took place from the chamber into a vacuum of approximately 10^-5 mm of Hg, a surface maintained at liquid nitrogen temperature some 8 cm above the orifice trapping most of the effused material. The vaporization chamber was recessed into a closely fitting 0.8 kg block of copper to provide a large thermal reservoir and the latter was enclosed by a double walled section of the vacuum system through which constant temperature water was circulated. The temperature of the copper block immediately adjacent to the vaporization chamber was monitored by a copper-constantan thermocouple. In general, the loss in weight per run was of the order of 10-50 mg. - GLP compliance:
- no
- Type of method:
- effusion method: Knudsen cell
- Temp.:
- 25 °C
- Vapour pressure:
- 0.14 mBar
- Remarks on result:
- other: Vapour pressure of dimethylamine-borane (1:1) at 25°C was calculated with the following experimentally obtained equation (validity range: 0 - 35 °C): log P (mmHg) = - [4038 * (1 +- 0.038)] / T + 12.544 (1 +- 0.042)
- Conclusions:
- The vapour pressure of dimethylamine-borane (1:1) is 0.14 mbar at 25 °C.
- Executive summary:
The vapour pressure of dimethylamine-borane (1:1) was experimentally determined by the Knudsen cell effusion method. At 25 °C, the vapour pressure is 0.14 mbar and was calculated with the following experimentally obtained equation (validity range: 0 - 35 °C): log P (mmHg) = - [4034 * (1 +- 0.038)] / T + 12.544 (1 +- 0.042).
Reference
Description of key information
The vapour pressure of dimethylamine-borane (1:1) was experimentally determined by the Knudsen cell effusion method. At 25°C, the vapour pressure is 0.14 mbar.
Key value for chemical safety assessment
- Vapour pressure:
- 14 Pa
- at the temperature of:
- 25 °C
Additional information
The vapour pressure was calculated with the following experimentally obtained equation (validity range: 0 - 35 °C): log P (mmHg) = - [4034 * (1 +- 0.038)] / T + 12.544 (1 +- 0.042).
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