4'-Ethyl-3-fluorbiphenyl-4-boronic acid

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.-28.09.2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

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

Version / remarks:

Regulation (EC) No 440/2008

Deviations:

no

GLP compliance:

no

Contact with:

other: mixture of barium nitrate and cellulose

Key result

Sample tested:

test mixture as specified

Remarks:

test item: 10%, cellulose: 90 %

Parameter:

maximum burning rate

Result:

0.79 mm/s

Key result

Sample tested:

reference mixture as specified

Remarks:

mixture of barium nitrate and cellulose with 55 wt.-% barium nitrate

Parameter:

maximum burning rate

Result:

1.5 mm/s

Preliminary test

Three test mixtures with the test item and cellulose 2:1 bumed down partially in 388 s, 334 s and 350 s, respectively.

Three test mixtures with barium nitrate/cellulose 2: 1 burned down completely in 64 s, 64 s and 69 s, respectively.

Due to the results of the preliminary test the main test had to be performed.

Burning times and rates of the reference mixtures

Barium nitrate (wt %)	Burning time over 200 mm (s)	Burning rate (mm/s)
50	182	1.10
55	133	1.50
60	136	1.47
70	164	1.22

The highest burning rate of 1.50 mm/s was found for the mixture with 55 wt.% oxidizer.

Burning times and rates of test item mixtures

Test item (%)	Burning time over 200 mm (s)	Burning rate (mm/s)
10	253	0.79
20	316	0.63
30	433	0.46
60	820	0.24
90	The mixture could not be ignited

Due to the fact that the maximum buming 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 only with the three mixtures (10, 20 and 30 wt.% of the test item) with the highest buming rates to verify these values.

Burning times and rates of the fastest test item mixtures

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%	253	0.79	242	0.83	245	0.82	243	0.82	248	0.81	252	0.79
20%	316	0.63	322	0.62	308	0.65	313	0.64	316	0.63	323	0.62
30%	433	0.46	440	0.46	429	0.47	430	0.47	442	0.45	435	0.46

Each mixture was measured 6 times. The mean burning rate for the mixture with the highest burning rate (10 %) was 0.81 mm/s. The difference between the mean burning rate and the maximum burning rate was <= 10 % for this mixture. The maximum burning rate of the mixtures of the test item and cellulose (0.83 mm/s) was lower than the maximum burning rate of the reference mixture of cellulose and barium nitrate (1.50 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 had no oxidizing properties.

Interpretation of results:

GHS criteria not met

Conclusions:

The test item had no oxidizing properties in the sense of the European Commission Regulation (EC) No 440/2008, Method A.17.

Executive summary:

Oxidizing properties of the test item were determined according to the European Commission Regulation (EC) No 440/2008, Method A.17. Due to the results of the preliminary test, the main was performed. In the main test, the test item and a defined combustible substance (both sieved to < 0.125 mm and dried) will be mixed in various ratios. Each mixture is then formed into a pile and the pile is ignited at one end. The maximum burning rate determined is compared with the maximum burning rate of the reference mixture. Mixtures of oxidizers with cellulose must be treated as potentially explosive and handled with care.

The maximum burning rate of the mixtures of the test item and cellulose (0.83 mm/s) was lower than the maximum burning rate of the reference mixture of cellulose and barium nitrate (1.50 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 had no oxidizing properties.

Reference 2

Endpoint:

oxidising gases

Data waiving:

study technically not feasible

Justification for data waiving:

the study does not need to be conducted because the substance is a solid

Reference 3

Endpoint:

oxidising liquids

Data waiving:

study technically not feasible

Justification for data waiving:

the study does not need to be conducted because the substance is a solid

Description of key information

The test item had no oxidizing properties.

Key value for chemical safety assessment

Oxidising properties:

non oxidising

Additional information

Oxidizing properties of the test item were determined according to the European Commission Regulation (EC) No 440/2008, Method A.17.

The maximum burning rate of the mixtures of the test item and cellulose (0.83 mm/s) was lower than the maximum burning rate of the reference mixture of cellulose and barium nitrate (1.50 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 had no oxidizing properties.

Justification for classification or non-classification

Based on the chemical structure and taking into account the provisions laid down in Regulation (EC) No. 1272/2008, the substance is not considered to be classified for oxidising properties.