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Diss Factsheets
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EC number: 247-955-1 | CAS number: 26748-41-4
- 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
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Viscosity
Administrative data
Link to relevant study record(s)
- Endpoint:
- viscosity
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2011-05-23
- 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:
- The viscosity is measured by a Ubbelohde viscometer which is one version of a glass capillary viscometer, where the liquid examined has to be of a known density. It consisits of a U-shaped glass tube held vertically in a controlled temperature bath (20°C). In one arm of the U is a vertical section of precise narrow bore (the capillary). Above this is a bulb, with it is another bulb lower down on the other arm. In use, liquid is drawn into the upper bulb by suction (15 mL) and after the viscometer is left for 30 minutes to regulate its temperature to 20°C the liquid examied is allowed to flow down through the capillary into the lower bulb. Two marks (one above and one below the upper bulb) indicate a known volume. The time taken for the level of the liquid to pass between these marks is proportional to the kinematic viscosity. Most commercial units are provided with a conversion factor, or can be calibrated by a fluid of known properties.
The time required for the test liquid to flow through a capillary of a known diameter of a certain factor between two marked points is measured. By multiplying the time taken by the factor of the viscometer, the kinematic viscosity is obtained. - GLP compliance:
- no
- Type of method:
- capillary viscometer (static)
- Temp.:
- 20°C
- Parameter:
- dynamic viscosity (in mPa s)
- Value:
- 6.3
- Conclusions:
- Under the conditions of the study the obtained viscosity for TBPND was 6.30 mPas at 20°C.
- Executive summary:
The viscosity (dynamic viscosity) of the test susbstance tert-Butylperoxyneodecanoat (TBPND) was examined by an Ubbelohde viscometer in three separate measurements at 20 °C. An average of the time measured (the time taken for the liquid to pass between two marked points) was considered for the viscosity calculation. Thus, the viscosity result obtained for TBPND was 6.3 mPas.
Reference
The following time results were obtained in three individual measurements:
measurement 1 - 221.52 s
measurement 2 - 221.35 s
measurement 3 - 221.44 s
For the viscosity calculation the average time was considered.
Description of key information
Under the conditions of the study the obtained viscosity for TBPND (at 20°C )was 6.30mPas.
Key value for chemical safety assessment
- Viscosity:
- 6.3 mPa · s (dynamic)
- at the temperature of:
- 20 °C
Additional information
The viscosity (dynamic viscosity) of the test susbstance tert-Butylperoxyneodecanoat (TBPND) was examined by an Ubbelohde viscometer in three separate measurements at 20°C. An average of the time measured (the time taken for the liquid to pass between two marked points) was considered for the viscosity calculation. Thus, the viscosity result obtained for TBPND was 6.3 mPas.
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