2H-Tetrazol-5-amine, potassium salt (1:1)

Oxidising properties

Administrative data

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2009

Report date:

2009

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

EU Method A.17 (Oxidising Properties (Solids))

Deviations:

yes

Remarks:

Instead of a six-fold determination of the burning rates of the three test item mixtures with the highest burning rates, the burning rates were only determined once, as the result was not open to doubt.

GLP compliance:

yes (incl. QA statement)

Test material

Test material information

Constituent 1

Reference substance name:

potassium 5-amino-1H-1,2,3,4-tetrazol-1-ide

Cas Number:

136369-04-5

Molecular formula:

CH2KN5

IUPAC Name:

potassium 5-amino-1H-1,2,3,4-tetrazol-1-ide

Test material form:

solid: particulate/powder

Details on test material:

Batch no.: 08KI030

Study design

Contact with:

powdered cellulose

Results and discussion

Test results (Oxidising solids)

Key result

Sample tested:

1:1 sample-to-cellulose ratio

Parameter:

burning rate

Remarks on result:

mixture does not ignite and burn

Any other information on results incl. tables

Burning Rates Test Item:

In the following table, the measured data of the test item mixtures are presented.

%Test Item	Burning Time (min)	Burning Rate (mm/s)
10	17.03	0.20
20	22.52	0.15
30	not flammable	not flammable
40	not flammable	not flammable
50	not flammable	not flammable
60	not flammable	not flammable
70	not flammable	not flammable
80	not flammable	not flammable
90	not flammable	not flammable

Burning Rate of Reference Item Mixtures

(Barium nitrate in mixtures with cellulose)

% Ba(NO3)2	Burning Time (min)	Burning rate (mm/s)
50	3.07	1.07
60	2.01	1.65
70	2.16	1.47
80	Flame died

Applicant's summary and conclusion

Interpretation of results:

GHS criteria not met

Conclusions:

The test item 5-Aminotetrazol Potassium is considered as not oxidising. In EU Method A.17, a six-fold determination of the burning rates of the three test item mixtures with the highest burning rates is demanded. In this study, only two test item mixtures were found to be inflammable at all, and these two mixtures showed much lower burning rates than the reference item mixture with the highest burning rate (factor >= 8). Regarding the structure of the test item, no functional groups with oxidising properties are present. The test item doesn’t even contain oxygen. Therefore, no influence on the outcome of the study was expected if the five repetitions would not be performed, and the study was terminated at this point. No observations were made which might cause doubts concerning the validity of the study outcome.

Executive summary:

In the pre-test, a mixture of cellulose and test item was not inflammable. The burning rates of four mixtures of a reference item (Ba(NO3)2) with cellulose was determined. Likewise, the burning rates of ten mixtures of the test item with cellulose (in different proportions) were determined. Only two mixtures of the test item with cellulose were found to be inflammable. Both mixtures showed much smaller burning rates than all reference item mixtures. Therefore the test item 5-Aminotetrazol Potassium is classified as “not oxidising”.