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EC number: 264-713-0 | CAS number: 64164-17-6
- 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
Particle size distribution (Granulometry)
Administrative data
Link to relevant study record(s)
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- Non-GLP, guideline study, well reported, reliable without restrictions
- Qualifier:
- according to guideline
- Guideline:
- DIN 55992-1 (Determination of a parameter for the dust formation of pigments and extenders - Part 1: Rotation method)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- rotating drum method
- Remarks:
- modified Heubach procedure
- Type of particle tested:
- other: dust particles
- Type of distribution:
- mass based distribution
- Mass median aerodynamic diameter:
- 28.96 µm
- Geometric standard deviation:
- 2.3
- Conclusions:
- The total dustiness of Diammonium sodium hexakis( nitrito-N)rhodate was determined to be 237.16 mg/g. The inhalable fraction was 147.63 mg/g, the thoracic fraction was 44.65 mg/g and the respirable fraction was 7.98 mg/g. The Mass Median Aerodynamic Diameter (MMAD) was 28.96 μm with Geometric Standard Deviation of 2.3 μm.
- Executive summary:
The dustiness of Diammonium sodium hexakis( nitrito-N)rhodate was tested in a modified Heubach procedure according to the guideline DIN 55992-1:2006 'Determination of a parameter for the dust formation of pigments and extenders - Part 1: Rotation method'. The substance was mechanically stressed in a rotating drum and the airborne dust was fed into a seven-stage cascade impactor. The dust masses collected at each cascade stage were weighed to determine total dustiness. Dust from 1.00 g of sample was generated for 5 min at a temperature of 25.0 ºC, 50.5 % relative humidity and 995.0 hPa atmosphere. The dustiness values in accordance with DIN EN 481 were calculated from the particle size distribution determined (cumulative frequency distribution) with the help of an excel macro. The study is non-GLP, but follows a standard guideline and is considered to be reliable. The total dustiness of Diammonium sodium hexakis( nitrito-N)rhodate was determined to be 237.16 mg/g. The inhalable fraction was 147.63 mg/g, the thoracic fraction was 44.65 mg/g and the respirable fraction was 7.98 mg/g. The Mass Median Aerodynamic Diameter (MMAD) was 28.96 μm with Geometric Standard Deviation of 2.3 μm.
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
- Version / remarks:
- Screening Test
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- sieving
- Type of particle tested:
- primary particle
- Type of distribution:
- mass based distribution
- No.:
- #1
- Size:
- < 100 µm
- Distribution:
- 0.696 %
- Remarks on result:
- other:
- Remarks:
- The proportion of test item < 100 µm was 0.696 %.
- Conclusions:
- The proportion of diammonium sodium hexakis (nitrito-N)rhodate <100 μm was 0.696 %.
- Executive summary:
Atwal and Tremain (2011) is a GLP compliant study following OECD 110 (screening method) and is considered suitable for use as the key study for this endpoint.
The proportion of diammonium sodium hexakis (nitrito-N)rhodate < 100 μm is 0.696 %.
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- March - June 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with generally accepted scientific standards and described in sufficient detail
- Qualifier:
- according to guideline
- Guideline:
- other: ISO 9277:2010(E)
- Qualifier:
- according to guideline
- Guideline:
- other: AA_LP_814_BET_08
- Qualifier:
- according to guideline
- Guideline:
- other: ISO 14488:2007(E)
- Qualifier:
- according to guideline
- Guideline:
- other: ISO 13320:2009(E)
- Qualifier:
- according to guideline
- Guideline:
- other: SAA_Troken_DISP, SAA LB2000
- Principles of method if other than guideline:
- The material was analysed for particle size distribution after dry dispersion and N-BET.
- GLP compliance:
- no
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- primary particle
- Type of distribution:
- volumetric distribution
- Percentile:
- D10
- Mean:
- 1.51 µm
- Remarks on result:
- other: Range; 1.48 - 1.55 µm
- Key result
- Percentile:
- D50
- Mean:
- 9.3 µm
- Remarks on result:
- other: Range; 9.2 - 9.5 µm
- Percentile:
- D90
- Mean:
- 43 µm
- Remarks on result:
- other: Range; 39 - 48 µm
- Conclusions:
- The average 10th, 50th and 90th percentile particle sizes for Diammonium sodium hexakis(nitrito-N)rhodate were 1.51, 9.3 and 43 μm, respectively. The specific surface area was determined as 1.09 ± 0.01 m2/g.
- Executive summary:
This is a non-GLP experimental study that follows standard test guidelines and is suitable for use for assessing this endpoint. The material was analysed for particle size distribution after dry dispersion and N-BET. The average 10th, 50th and 90th percentile particle sizes for Diammonium sodium hexakis(nitrito-N)rhodate were 1.51, 9.3 and 43 μm, respectively. The specific surface area was determined as 1.09 ± 0.01 m2/g.
Referenceopen allclose all
Experimental results
Quantity of substance used [g]: 1
Total dust mass in impactor [mg]: 237.16
Dust concentration in impactor [mg/m³]: 1181.74
Total dustiness [mg/g]: 237.16
Inhalable fraction [mg/g]: 147.63
Thoracic fraction [mg/g]: 44.65
Respirable fraction [mg/g]: 7.98
Mass Median Aerodynamic Diameter (MMAD) = 28.96 μm (GSD = 2.30 μm)
The results of the sieving procedure are shown below:
Measurement |
Result |
Mass of test item transferred to sieve |
10.06g |
Mass of test item passed through sieve |
0.070g |
Proportion of test item <100µm |
0.696% |
Specific surface area N-BET = 1.09 +/- 0.01 m2/g. Range = 1.08 +/- 0.002 to 1.10 +/- 0.002 m2/g.
Table 1: N-BET analysis data and percentiles calculated from the particle size distribution for Diammonium sodium hexakis(nitrito-N)rhodate.
Analysis 1 | Analysis 2 | Analysis 3 | Average | |
Specific surface area N-BET (m2/g) | 1.10 ± 0.002 | 1.08 ± 0.002 | 1.09 ± 0.01 | |
X10;3 (μm) | 1.48 | 1.55 | 1.51 | 1.51 |
X50;3 (μm) | 9.2 | 9.5 | 9.3 | 9.3 |
X90;3 (μm) | 43 | 48 | 39 | 43 |
Description of key information
Two samples of diammonium sodium hexakis(nitrito-N)rhodate were tested, the first in a screening test and the second for particle size analysis and specific surface area.
In the screening test, the proportion of diammonium sodium hexakis (nitrito-N)rhodate < 100 μm was 0.696 %.
The particle size analysis determined the average 10th, 50th and 90th percentile particle sizes for diammonium sodium hexakis(nitrito-N)rhodate were 1.51, 9.3 and 43 μm, respectively. The specific surface area was determined as 1.09 ± 0.01 m2/g.
Additional information
Atwal and Tremain (2011) is a GLP compliant study following OECD 110 (screening method) and is considered suitable for use as the key study for this endpoint. For the sample tested, the proportion of diammonium sodium hexakis (nitrito-N)rhodate < 100 µm was 0.696 %.
Pothoff (2012) is a non-GLP experimental study that follows standard test guidelines and is also suitable for use as a key study for assessing this endpoint. The sample was analysed for particle size distribution after dry dispersion and N-BET. The average 10th, 50th and 90th percentile particle sizes for diammonium sodium hexakis(nitrito-N)rhodate were 1.51, 9.3 and 43 µm, respectively. The specific surface area was determined as 1.09 ± 0.01 m2/g.
The dustiness of diammonium sodium hexakis( nitrito-N)rhodate was tested in a modified Heubach procedure according to the guideline DIN 55992-1:2006. The study is non-GLP, but follows a standard guideline and is considered to be reliable. The total dustiness of diammonium sodium hexakis(nitrito-N)rhodate was determined to be 237.16 mg/g. The inhalable fraction was 147.63 mg/g, the thoracic fraction was 44.65 mg/g and the respirable fraction was 7.98 mg/g. The Mass Median Aerodynamic Diameter (MMAD) was 28.96 µm with Geometric Standard Deviation of 2.3 µm.
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