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EC number: 231-391-8 | CAS number: 7529-22-8
- 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

Density
Administrative data
Link to relevant study record(s)
- Endpoint:
- relative density
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2012-01-17
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.3 (Relative Density)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- pycnometer method
- Key result
- Type:
- relative density
- Density:
- 1.135 other: (corresponds to D4(20))
- Temp.:
- 20 °C
- Conclusions:
- The relative density of the substance was determined to be 1.135 at 20 °C.
- Executive summary:
The relative density of the test item was determined according to EU Method A.3. by applying the pycnometer method. The relative density of the substance was determined to be 1.135 at 20 °C.
Reference
Determining the density of the immersion liquid:
Run number | 1 |
Mass of empty pycnometer (g) | 20.92 |
Temperature (°C) | 20 |
Mass of water and pycnometer (g) | 45.78 |
Mass of immersion liquid and pycnometer (g) | 45.00 |
Calculated Density of water using equation 1 (g/cm3) | 0.994 |
Calculated Density of immersion liquid using equation 2 (g/cm3) | 0.963 |
Density of immersion liquid (kg/m3) | 963 |
Equation 1 (Calculation for the density of water)
Mass of water/volume of pycnometer = density of water
Equation 2 (Calculation of density of immersion liquid)
rhoIL = (mIL/mW) x rhow,t
where:
mIL is the mass of immersion liquid
mw is the mass of water
rhow,t is the density of water at temperature t
Calculated value for the density of immersion liquid = 963 kg/m3 at 20°C
Determining the density of the sample:
Run Number | 1 | 2 |
Mass of Empty Pycnometer (g) | 20.92 | 20.92 |
Mass of Sample & Pycnometer (g) | 31.14 | 30.10 |
Mass of Sample added to empty Pycnometer (g) | 10.22 | 9.18 |
Mass of Sample, Pycnometer & immersion liquid | 46.70 | 46.24 |
Mass of immersion liquid added (g) | 15.56 | 16.14 |
Calculated Density of Sample (g/cm3) | 1.155 | 1.114 |
Density of Sample (kg/m3) | 1155 | 1114 |
Mean result (kg/m3) | 1135 |
Equation 3 (Calculation for the density of sample)
rho s,t = m s rho IL/m1 - m2
Where m s is the mass, in grams, of the sample:
m1 is the mass, in grams, of immersion liquid required to fill the pycnometer;
m2 is the mass, in grams, of immersion liquid required to fill the pycnometer containing the specimen;
rho IL is the density of the immersion liquid (as determined by equation 1)
Description of key information
The relative density of NMMO was determined in a GLP study according to the EU method A.3 (relative density) to be 1.135 at 20°C, following the pycnometer method (Younis, 2012).
Key value for chemical safety assessment
- Relative density at 20C:
- 1.135
Additional information
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