potassium (oxido-NNO-azoxy)cyclohexane; cyclohexylhydroxydiazene 1-oxide, potassium salt; [K-HDO]

Explosiveness

Administrative data

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

Cross-reference

Cross-reference 1

Reason / purpose for cross-reference:

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 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.17 (Oxidising Properties (Solids))

Deviations:

not specified

GLP compliance:

yes (incl. QA statement)

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.

Cross-reference 2

Reason / purpose for cross-reference:

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 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.10 (Flammability (Solids))

Deviations:

not specified

GLP compliance:

yes (incl. QA statement)

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.

Cross-reference 3

Reason / purpose for cross-reference:

reference to same study

Reference

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

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.16 (Relative Self-Ignition Temperature for Solids)

Deviations:

not specified

GLP compliance:

yes (incl. QA statement)

Specific details on test material used for the study:

Batch no. W-87

Key result

Relative self-ignition temperature:

250 °C

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.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2001

Report date:

2001

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

EU Method A.14 (Explosive properties)

Deviations:

not specified

GLP compliance:

yes (incl. QA statement)

Test material

Test material information

Constituent 1

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

Specific details on test material used for the study:

Batch no. W-87

Results and discussion

Small-scale preliminary tests

Small-scale preliminary tests 1

Key result

Parameter:

other: thermal sensitivity

Remarks on result:

other: not thermal sensitive

Small-scale preliminary tests 2

Key result

Parameter:

sensitiveness to impact: impact energy (J)

Remarks on result:

other: not sensitive to impact

Small-scale preliminary tests 3

Key result

Parameter:

sensitiveness to friction: friction load (N)

Remarks on result:

other: not sensitive to friction

Any other information on results incl. tables

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
2·	no	no	no
3	no	no	no
4	no	no	no
5	no	no	no
6	no	no	no

 

Applicant's summary and conclusion

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.