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Physical & Chemical properties

Auto flammability

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Administrative data

Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
February 06, 2001 - March 16, 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:
explosiveness, other
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Feb 06, 2001 - Mar 13, 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
Qualifier:
according to
Guideline:
EU Method A.14 (Explosive properties)
Deviations:
not specified
GLP compliance:
yes (incl. certificate)
Specific details on test material used for the study:
Batch no. W-87
Key result
Parameter:
other: thermal sensitivity
Remarks on result:
other: not thermal sensitive
Key result
Parameter:
sensitiveness to impact: impact energy (J)
Remarks on result:
other: not sensitive to impact
Key result
Parameter:
sensitiveness to friction: friction load (N)
Remarks on result:
other: not sensitive to friction

Results:

1.    Thermal sensitivity (steel sleeve test)

Test-no.

Diameter of opening/mm

Number of fragments

Explosion?

1

6

none

no

2

6

none

no

3

6

none

no

4

2

none

no

5

2

none

no

6

2

none

no

 

2.    Mechanical sensitivity - Falling weight test (sensitivity to impact)

Test-no.

Weight/kg

Height/m

Explosion?

Flames?

1

10

0.4

no

no

2

10

0.4

no

no

3

10

0.4

no

no

4

10

0.4

no

no

5

10

0.4

no

no

6

10

0.4

no

no

 

3.    Friction test (sensitivity to friction)

Test-no.

Explosion?

Crepitation?

Flames?

1

no

no

no

no

no

no

3

no

no

no

4

no

no

no

5

no

no

no

6

no

no

no

 

Conclusions:
The test item is non-explosive
Executive summary:

The explosive properties of K-HDO have been tested according to 92/69/EEC, annex A14. The method provides a scheme of testing to determine whether a substance presents a danger of explosion when submitted to the effect of flame (thermal sensitivity) or to impact or friction (mechanical sensitivity). The thermal sensitivity test (steel sleeve test), the falling weight test (sensitivity to impact) and the friction test (sensitivity to friction) showed that K-HDO is not explosive. None of the tests resulted in an explosion of the test substance. No fragments were observed in the tests. No explosion and no flames were observed in the falling weight test. No crepitation occurred and no flames were observed in the friction test.

Reason / purpose:
reference to same study
Reference
Endpoint:
oxidising solids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Feb 06, 2001 - Mar 13, 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
Qualifier:
according to
Guideline:
EU Method A.17 (Oxidising Properties (Solids))
Deviations:
not specified
GLP compliance:
yes (incl. certificate)
Contact with:
powdered cellulose
Key result
Sample tested:
other: barium nitrate/cellulose mixture
Parameter:
burning time of reaction over a distance of 200 mm
Remarks on result:
mixture does not ignite and burn

Burning rate of test mixtures:

Test substance / % weight

Burning time/ s

10

855

20

1950

30

*

40

*

50

*

60

221

70

*

80

58

90

59

* The substance does not burn over the whole distance of 200 mm.

Conclusions:
The test substance is not considered an oxidizing substance.
Executive summary:

The test performed according to 92/69/EEC, appendix A17 shows that K-HDO is not oxidizing.

Reason / purpose:
reference to same study
Reference
Endpoint:
flammable solids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Feb 06, 2001 - Mar 13, 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
Qualifier:
according to
Guideline:
EU Method A.10 (Flammability (Solids))
Deviations:
not specified
GLP compliance:
yes (incl. certificate)
Specific details on test material used for the study:
Batch no.: W-87
Key result
Test procedure:
burning rate test: preliminary screening test
Burning time:
23 s
Key result
Test procedure:
burning time (test type not further specified)
Burning time:
21 s

Result:

Preliminary test

Burning time: 23 s

Burning rate test

Burning time: 21 s

Conclusions:
Solid K-HDO is considered to be highly flammable.
Executive summary:

The determined burning time of K-HDO is 21 s.

Due to a burning time of < 45 seconds purified K-HDO is considered to be highly flammable.

However K-HDO is commercially available only as a 30 % aqueous formulation. Due to the high water content of 70 %, K-HDO as manufactured is not flammable.

Data source

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

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
EU Method A.16 (Relative Self-Ignition Temperature for Solids)
Deviations:
not specified
GLP compliance:
yes (incl. certificate)

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 no. W-87

Results and discussion

Relative self-ignition temperature (solids)
Key result
Relative self-ignition temperature:
250 °C

Applicant's summary and conclusion

Conclusions:
The Relative Self-Ignition Temperature is 250°C.
Executive summary:

The Relative Self-Ignition Temperature of K-HDO has been determined according to 92/69/EC, appendix A16 and amounts to 250°C.