clothianidin (ISO); (E)-1-(2-chloro-1,3-thiazol-5-ylmethyl)-3-methyl-2-nitroguanidine

Oxidising properties

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

21-25 Jul 2014

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

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

GLP compliance:

yes (incl. QA statement)

Remarks:

Hess. Ministerium fur Umwelt, ländlichen Raum und Verbraucherschutz, Wiesbaden, Germany

Contact with:

powdered cellulose

Sample tested:

reference mixture as specified

Remarks:

barium nitrate - cellulose, 60% barium nitrate

Parameter:

maximum burning rate

Result:

1.36 mm/s

Remarks on result:

other: burning time over 200 mm: 147 s

Sample tested:

test mixture as specified

Remarks:

test item - cellulose, 20% test item

Parameter:

maximum burning rate

Result:

0.96 mm/s

Remarks on result:

other: burning time over 200 mm: 209 s

Preliminary test:

In three test mixtures with the test item and cellulose 2:1 the flame extinguished after 102 s, 133 s and 170 s. Afterwards the cone smouldered completely down in total times of 190 s, 205 s and 210 s.
Three test mixtures with barium nitrate and cellulose 2:1 burned down completely in 59 s, 55 s and 62 s.
Due to the results of the preliminary test the full test had to be performed.

Main test:

Four tests were performed for the reference mixture (barium nitrrate and cellulose) with 50, 55, 60 and 70 wt.% oxidizer. The results are shown in the following table.

Barium nitrate (%)	Burning time over 200 mm (s)	Burning rate (mm/s)
50	175	1.14
55	148	1.35
60	147	1.36
70	206	0.97

The highest burning rate 1.36 mm/s was found for the mixture with 60 wt% oxidizer.

Mixtures of the test item with cellulose were prepared in 10 %-increments.

Test item (%)	Burning time over 200 mm (s)	Burning rate (mm/s)
10	218	0.92
20	209	0.96
30	231	0.87
40	241	0.83
50	250	0.80
60	260	0.77
70	359	0.56
80	Test mixture melted and extinguished in the initial burning phase.	-
90	Test mixture melted and could not be ignited.	-
100	The test item melted and could not be ignited.	-

Due to the fact that the maximum burning rate of the mixtures of the test item with cellulose was lower than the maximum burning rate of the reference mixture, six tests were performed with the three mixtures with the highest burning rates of 10, 20 and 30 wt.% of test item to verify these values:

Test	t(s)	V(mm/s)	t(s)	V(mm/s)	t(s)	V(mm/s)	t(s)	V(mm/s)	t(s)	V(mm/s)	t(s)	V(mm/s)
10%	218	0.92	198	1.01	206	0.97	207	0.97	193	1.04	209	0.96
20%	209	0.96	199	1.01	222	0.90	212	0.94	205	0.98	204	0.98
30%	231	0.87	218	0.92	211	0.95	225	0.89	215	0.93	220	0.91

The highest burning rate 1.04 mm/s was found for the mixture with 10 % test item.
The maximum burning rate of the mixtures of the test item and cellulose (1.04 mm/s) was lower than the maximum burning rate of the reference mixture of cellulose and barium nitrate (1.36 mm/s).
Due to the fact that the mixture of the test item with cellulose burned slower compared to the reference mixture, it was concluded that the test item demonstrated no oxidising properties.

The test item Clothianidin (Tl 435, AE 1283742), technical substance (batch code: AE 1283742-01-08), has no oxidizing properties in the sense of the European Commission Regulation (EC) No. 440/2008, Method A. 17.

Reference 2

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

supporting study

Study period:

14 Jun - 14 Aug 2000

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

Qualifier:

according to guideline

Guideline:

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

GLP compliance:

no

Contact with:

powdered cellulose

Sample tested:

reference mixture as specified

Remarks:

barium nitrate - cellulose, 60% barium nitrate

Parameter:

maximum burning rate

Result:

1.1 mm/s

Sample tested:

test mixture as specified

Remarks:

test item - cellulose, 10% test item

Parameter:

maximum burning rate

Result:

0.53 mm/s

Remarks on result:

other: burning time over 160 mm: 300 s

The mixture 10% substance/90% cellulose was the only one where burning speed rate could be determined. For other mixtures (content of substance 20% -90%), the flame either extinguished before reaching the end or the test item was not ignitable.

The test item had no oxidising properties under the test conditions in the sense of EU Method A.17.

Description of key information

not oxidising

Key value for chemical safety assessment

Oxidising properties:

non oxidising

Additional information

The substance demonstrates no oxidising properties in the sense of the European Commission Regulation (EC) No. 440/2008, Method A. 17. It is confirmed by the results of an earlier supporting experiment (EC A.17).

Justification for classification or non-classification

The available data on oxidising properties of the test substance is not sufficient for non-classification according to Regulation (EC) 1272/2008 (CLP). The reason for no classification is "data lacking".