Registration Dossier

Administrative data

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
Cross-referenceopen allclose all
Reason / purpose:
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:
reference to same study
Reason / purpose:
reference to same study
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reference to same study
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reference to same study
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reference to same study
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reference to same study
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reference to same study
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
July 27, 1995
Deviations:
not specified
Qualifier:
according to
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:
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:
reference to same study
Reason / purpose:
reference to same study
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reference to same study
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reference to same study
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reference to same study
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reference to same study
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reference to same study
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Version / remarks:
1995
Deviations:
not specified
Qualifier:
according to
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

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
D420= 1.431

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.

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.

Reason / purpose:
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:
reference to same study
Reason / purpose:
reference to same study
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reference to same study
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reference to same study
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reference to same study
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reference to same study
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reference to same study
Qualifier:
according to
Guideline:
EU Method A.8 (Partition Coefficient - Shake Flask Method)
Deviations:
not specified
Qualifier:
according to
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

Reason / purpose:
reference to same study
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:
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

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.

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.

Reason / purpose:
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:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Qualifier:
according to
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

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.

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.

Reason / purpose:
reference to same study
Reference
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
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
not specified
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
not specified
Qualifier:
according to
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
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
Temp.:
20 °C
Vapour pressure:
< 0 hPa
Key result
Temp.:
50 °C
Vapour pressure:
< 0 hPa

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

 

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

 

 

Reason / purpose:
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:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Qualifier:
according to
Guideline:
OECD Guideline 105 (Water Solubility)
Deviations:
not specified
Qualifier:
according to
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.

Individual Results:

Sample

Mtest item
[mg]

V water
[ml]

pH

Ctest item
[mg/l]

Used water

 

 

6.1

 

 

4.71

5

10.4

451

 

4.42

5

10.4

453

 

4.87

5

10.4

453

Mean

 

 

 

452

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.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2001
Report Date:
2001

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: OECD guideline 102
GLP compliance:
yes
Type of method:
differential scanning calorimetry

Test material

Reference
Name:
Unnamed
Type:
Constituent
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
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

Boiling point
Key result
Decomposition:
yes
Decomp. temp.:
210 °C

Applicant's summary and conclusion

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.