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EC number: 613-953-8 | CAS number: 66603-10-9
- 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
![](https://poisoncentres.echa.europa.eu/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/print_physical-and-chemical-properties.png)
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- February- April 2001
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Cross-referenceopen allclose all
- Reason / purpose for cross-reference:
- reference to same study
Reference
- Endpoint:
- boiling point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- February- April 2001
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- other: OECD guideline 102
- GLP compliance:
- yes
- Type of method:
- differential scanning calorimetry
- Specific details on test material used for the study:
- Batch identification: W-87
Date of production (test item): 12/00 - 01/01
Purity: 90.8 g/100 g; determined by potentiometric titration with HCI (c(HCI) = 0.1 mol/1) in water. - Key result
- Decomposition:
- yes
- Decomp. temp.:
- 210 °C
- Conclusions:
- The determination of the boiling point is not possible due to decomposition before the boiling point is reached. The decomposition temperature is estimated to be at 210°C.
- Executive summary:
DSC measurements show, that at about 210 °C the test item starts decomposition. Therefore, no boiling point is reported.
- Reason / purpose for cross-reference:
- reference to same study
Reference
- Endpoint:
- relative density
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- February- April 2001
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 109 (Density of Liquids and Solids)
- Version / remarks:
- 1995
- Deviations:
- not specified
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7300 (Density / Relative Density / Bulk Density)
- Deviations:
- not specified
- GLP compliance:
- yes
- Type of method:
- pycnometer method
- Specific details on test material used for the study:
- Batch identification: W-87
Date of production (test item): 12/00 - 01/01
Purity: 90.8 g/100 g; determined by potentiometric titration with HCI (c(HCI) = 0.1 mol/1) in water. - Key result
- Type:
- relative density
- Density:
- 1.431 g/cm³
- Temp.:
- 20 °C
- Conclusions:
- The relative density of K-HDO according to OECD 109 amounts to 1.431 ± 0.001 g/cm³.
- Executive summary:
The relative density of K-HDO has been determined according to OECD guideline 109 (pycnometer method) to be:1.431 ± 0.001 g/cm³ (mean value). The relative density was calculated by division of the density of the test item at 20°C and the density of water at 4 °C.
Individual results:
Displacement liquid: petroleum Density (at 20°C): 0.7988 /cm³ |
|
|
|
Pycn. Volume 25.157 cm³ |
Pycn. Volume 24.748 cm³ |
A [g] |
33.7034 |
28.5219 |
B [g] |
36.1331 |
32.4189 |
C [g] |
54.8710 |
50.0131 |
D [g] |
20.0954 |
19.7687 |
E [g] |
2.4297 |
3.8970 |
F [g] |
18.7379 |
17.5942 |
G [g] |
1.3575 |
2.1745 |
H [g/cm³] |
1.4297 |
1.4315 |
mean H [g/cm³]1.431 ± 0.001 |
Explanation:
A: mass of pycnometer empty ( corrected for air)
B: mass of pycnometer with test item (corrected for air)
C: mass of pycnometer with test item and displacement liquid
D: mass of displacement liquid calculated for the total pycnometer volume
E: mass of test item (B - A)
F: mass of displacement liquid (C - B)
G: mass of displacement liquid calculated for the volume taken by the test item (D - F)
H: relative density of the test item (E/G * density of displacement liquid)
The relative density was calculated by division of the density of the test item at 20°C
and the density of water at 4 °C.
- Reason / purpose for cross-reference:
- reference to same study
Reference
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- February- April 2001
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- July 27, 1995
- Deviations:
- not specified
- Qualifier:
- according to guideline
- Guideline:
- other: DIN 51007
- Deviations:
- not specified
- GLP compliance:
- yes
- Type of method:
- differential scanning calorimetry
- Specific details on test material used for the study:
- Batch identification: W-87
Date of production (test item): 12/00 - 01/01
Purity: 90.8 g/100 g; determined by potentiometric titration with HCI (c(HCI) = 0.1 mol/L) in water. - Key result
- Melting / freezing pt.:
- 163.1 °C
- Conclusions:
- K-HDO has a melting / freezing point of 163.1 °C
- Executive summary:
The test has been performed according to OECD guideline 102. The DSC measurements show that the melting temperature amounts to 163.1 °C.
- Reason / purpose for cross-reference:
- reference to same study
Reference
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- February- April 2001
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.8 (Partition Coefficient - Shake Flask Method)
- Deviations:
- not specified
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
- GLP compliance:
- yes
- Type of method:
- flask method
- Partition coefficient type:
- octanol-water
- Specific details on test material used for the study:
- Batch identification: W-87
Date of production (test item): 12/00 - 01/01
Purity: 90.8 g/100 g; determined by potentiometric titration with HCI (c(HCI) = 0.1 mol/1) in water. - Analytical method:
- high-performance liquid chromatography
- Key result
- Type:
- log Pow
- Partition coefficient:
- -0.2
- Temp.:
- 25 °C
- pH:
- 7.2
- Details on results:
- log Pow= - 0.2
theoretical value: - 1.4*
*calculation of water solubility was done with EPIWIN-software, Syracuse Research Corp., 1992-94, Merrill Lane, Syracuse, N.Y. - Executive summary:
Partition coefficient (log POW): pH 7.2: log Pow = – 0,2 at 25°C
Reference
- Endpoint:
- thermal stability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- February- April 2001
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: OECD guideline 102
- Version / remarks:
- July 27, 1995
- Deviations:
- not specified
- Principles of method if other than guideline:
- The DSC measurements have been made following test method M95/0035 in agreement with OECD guideline 102 of July 27, 1995, and with German standard DIN 51007. The method corresponds also to OECD Guideline 113.
- GLP compliance:
- yes
- Key result
- Operating temp.:
- <= 350 °C
- Transformation products:
- not specified
- Conclusions:
- The disintegration temperature is estimated to be at 210°C.
- Executive summary:
DSC measurements show that decomposition of K-HDO occurs at 210°C.
Disintegration temperature: at the first heating an endothermal peak at approximately 165°C and an exothermal peak at approximately 210°C can be observed. At the second heating there is no peak detectable indicating that the sample has been changed irreversibly. The disintegration temperature is estimated with the help of the exothermal peak to be at 210°C.
- Reason / purpose for cross-reference:
- reference to same study
Reference
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- February- April 2001
- Reliability:
- 1 (reliable without restriction)
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Version / remarks:
- adopted 27. July 1995.
- Deviations:
- not specified
- GLP compliance:
- yes
- Type of method:
- ring method
- Specific details on test material used for the study:
- Batch identification: W-87
Date of production (test item): 12/00 - 01/01
Purity: 90.8 g/100 g; determined by potentiometric titration with HCI (c(HCI) = 0.1 mol/1) in water. - Key result
- Surface tension:
- 71.4 N/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Conclusions:
- The test item is not surface-active.
- Executive summary:
The surface tension of an aqueous solution (ca. 1 g/L) of the test item at 20 °C was found to be 71.4 ± 0.2 mN/m. The measurement uncertainty corresponds to the range obtained on performing duplicate measurements. The test item is not surface-active.
The surface tension of an aqueous solution (ca. 1 g/L) of the test item at 20 °C was found to be 71.4 ± 0.2 mN/m. The measurement uncertainty corresponds to the range obtained on performing duplicate measurements. The test item is not surface-active.
- Reason / purpose for cross-reference:
- reference to same study
Reference
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- February- April 2001
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Deviations:
- not specified
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- Deviations:
- not specified
- GLP compliance:
- yes
- Type of method:
- flask method
- Specific details on test material used for the study:
- Batch identification: W-87
Date of production (test item): 12/00 - 01/01
Purity: 90.8 g/100 g; determined by potentiometric titration with HCI (c(HCI) = 0.1 mol/1) in water. - Water solubility:
- 452 g/L
- Conc. based on:
- test mat.
- Temp.:
- 20 °C
- pH:
- 10.4
- Details on results:
- The water solubility of the test item at T = 20°C ± 0.5 K amounts to 452 g/L ± 1 g/L. Due to the high solubility pH and temperature effects were
not measured within the study. - Conclusions:
- Water solubility of test item at T = 20°C ± 0.5 K = 452 g/L ± 1 g/L
theoretical value: 812 g/L (at 25°C) - Executive summary:
The water solubility of test item at T = 20°C ± 0.5 K amounts to 452 g/L ± 1 g/L.
Individual Results:
Sample |
Mtest item |
V water |
pH |
Ctest item |
Used water |
|
|
6.1 |
|
|
4.71 |
5 |
10.4 |
451 |
|
4.42 |
5 |
10.4 |
453 |
|
4.87 |
5 |
10.4 |
453 |
Mean |
|
|
|
452 |
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 001
- Report date:
- 2001
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- not specified
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- not specified
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7950 (Vapor Pressure)
- Deviations:
- not specified
- GLP compliance:
- yes
- Type of method:
- effusion method: by loss of weight or by trapping vaporisate
Test material
- Reference substance name:
- Cyclohexylhydroxydiazene 1-oxide, potassium salt
- EC Number:
- 613-953-8
- Cas Number:
- 66603-10-9
- Molecular formula:
- C6H11KN2O2
- IUPAC Name:
- Cyclohexylhydroxydiazene 1-oxide, potassium salt
- Test material form:
- solid: particulate/powder
- Details on test material:
- Test item: (N-Cyclohexyl-diazeniumdioxy)-potassium
IUPAC name: Cyclohexylhydroxydiazene 1-oxide, potassium salt
Chemical name: Cyclohexylhydroxydiazene 1-oxide, potassium salt; synonyma: (N-Cyclohexyl-diazeniumdioxy)-potassium, K-HDO, K-NCH, Xyligen K powder, Xyligen K
Molecular formula: C6 H11 K N2 O2
Molecular mass: 182.27
Constituent 1
- Specific details on test material used for the study:
- Batch identification: W-87
Date of production (test item): 12/00 - 01/01
Purity: 90.8 g/100 g; determined by potentiometric titration with HCI (c(HCI) = 0.1 mol/1) in water.
Results and discussion
Vapour pressureopen allclose all
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- < 0 hPa
- Key result
- Temp.:
- 50 °C
- Vapour pressure:
- < 0 hPa
Any other information on results incl. tables
As the determination of the vapour pressure was carried out at 80 °C and the limit of determination for the method used was 10-6hPa, considering the law of Clausius and Clapeyron, for the vapour pressures at 20 °C and at 50 °C the following values can be given:
Temperature [°C] |
Vapour Pressure [hPa] |
20 |
< 1 *10-6 |
50 |
< 1*10-6 |
Applicant's summary and conclusion
- Conclusions:
- 20°C: < 1 *10-6 hPa
50°C: < 1*10-6 hPa - Executive summary:
Method:
The vapour pressure was determined by effusion method, weight loss, according to Annex Commission Directive 92/69/EEC respectively OECD 109
Results:
In the temperature range used for vapour pressure measurements the test item was solid. At the temperature applied the vapour pressure descended perpetually at constant temperature and reached the identification limit of the most sensitive measurement technique. DSC measurements show, that at about 210°C the test item starts decomposition, therefore the vapour pressure cannot exactly be determined. However, as the determination of the vapour pressure was carried out at 80 °C and the limit of determination for the method used was 10-6hPa, considering the law of Clausius and Clapeyron, for the vapour pressures at 20 °C and at 50 °C the following values can be given:
Temperature [°C]
Vapour Pressure [hPa]
20
< 1 *10-6
50
< 1*10-6
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Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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