3-Fluorphenylboric 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:

06-10-2016 to 13-12-2016

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

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

Deviations:

no

Qualifier:

equivalent or similar to guideline

Guideline:

UN Manual of Tests and Criteria: Test O.1 (Test for oxidizing solids)

Deviations:

no

GLP compliance:

no

Contact with:

powdered cellulose

Duration of test (contact time):

>= 125 - <= 225 s

Key result

Sample tested:

test mixture as specified

Remarks:

10 %

Parameter:

maximum burning rate

Result:

1.03 mm/s

Sample tested:

test mixture as specified

Remarks:

10 %

Parameter:

mean burning time

Result:

0.97 mm/s

Sample tested:

reference mixture as specified

Remarks:

60 wt.%

Parameter:

maximum burning rate

Result:

1.59 mm/s

Grinding, sieving and drying of the test item, barium nitrate and cellulose

The cellulose was dried by treating the sample at 105 °C ± 5 °C until the weight was constant. Due to the particle size of the cellulose grinding and sieving was not necessary.

The barium nitrate was ground, sieved < 0.12 mm and dried by treating the sample at 105 °C ± 5 °C until the weight was constant.

The test item was ground, sieved < 0.12 mm and test item was dried by treating the sample at 50 °C ± 5 °C under vacuum until the weight was constant.

Preliminary test

Three test mixtures with the test item and cellulose 2:1 burned down completely in 189 s, 196 s and 189 s, respectively.

Three test mixtures with barium nitrate/cellulose 2:1 burned down completely in 68 s, 65 s and 69 s, respectively.

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

 

Main test

Four tests were performed for the reference mixture (barium nitrate and cellulose) with 50, 55, 60 and 70 wt. % oxidizer (barium nitrate).

Table 1: Burning times and rates of the reference mixtures

Barium nitrate [wt.%]	Burning time over 200 mm [s]	Burning rate [mm/s]
50	169	1.18
55	130	1 54
60	126	1.59
70	187	1.07

The highest burning rate of 1.59 mm/s was found for the mixture with 60 wt. % oxidizer.

Mixtures of the test item with cellulose were prepared in between 10 and 90 wt. % of the test item and tested.

Table 2: Burning times and rates of the test item mixtures

Test item [%]	Burning time over 200 mm [s]	Burning rate [mm/s]
10	220	0.91
20	237	0.84
30	233	0.86
60	263	0.76
90	The mixture could not be ignited, the test item melted	-

Due to the fact that the maximum burning rate of the mixtures of the test item with cellulose is 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 burning rates to verify these values.

 

Table 3: 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 %	220	0.91	206	0.97	195	1.03	205	0.98	215	0.93	202	0.99
20 %	237	0.84	215	0.93	221	0.91	225	0.89	219	0.91	224	0.89
30 %	233	0.86	210	0.95	216	0.93	223	0.90	210	0.95	219	0.91

Each mixture was measured 6 times. The mean burning rate for the mixture with the highest burning rate (10 %) was 0.97 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 (1.03 mm/s) was lower than the maximum burning rate of the reference mixture of cellulose and barium nitrate (1.59 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 has no oxidizing properties.

Interpretation of results:

GHS criteria not met

Conclusions:

The test item has no oxidising properties.

Executive summary:

A study according to Regulation (EC) 440/2008 Method A.17 was performed to determine the oxidising properties of the test item. A preliminary test was carried out to determine if the test item is oxidising and if a main test is necessary. Three test mixtures with the test item and cellulose 2:1 burned down completely in 189 s, 196 s and 189 s, respectively. Three test mixtures with barium nitrate/cellulose 2:1 burned down completely in 68 s, 65 s and 69 s, respectively. Due to the results of the preliminary test the main test had to be performed. Four tests were performed for the reference mixture (barium nitrate and cellulose) with 50, 55, 60 and 70 wt. % oxidizer (barium nitrate). The highest burning rate of 1.59 mm/s was found for the mixture with 60 wt. % oxidizer. Mixtures of the test item with cellulose were prepared in between 10 and 90 wt. % of the test item and tested. Due to the fact that the maximum burning rate of the mixtures of the test item with cellulose is 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 burning rates to verify these values. The mean burning rate for the mixture with the highest burning rate (10 %) was 0.97 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 (1.03 mm/s) was lower than the maximum burning rate of the reference mixture of cellulose and barium nitrate (1.59 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 has 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 has not to be classified as oxidising solid, oxidising liquid or oxidising gas.

Key value for chemical safety assessment

Oxidising properties:

non oxidising

Additional information

Oxidising gases (reference 4.15-2)

The test item is a solid at ambient conditions. This hazard class is only applicable for gases. Thus, the substance was not considered for classification as oxidising gases.

Oxidising solids (reference 4.15-1)

A study according to Regulation (EC) 440/2008 Method A.17 was performed to determine the oxidising properties of the test item. A preliminary test was carried out to determine if the test item is oxidising and if a main test is necessary. Three test mixtures with the test item and cellulose 2:1 burned down completely in 189 s, 196 s and 189 s, respectively. Three test mixtures with barium nitrate/cellulose 2:1 burned down completely in 68 s, 65 s and 69 s, respectively. Due to the results of the preliminary test the main test had to be performed. Four tests were performed for the reference mixture (barium nitrate and cellulose) with 50, 55, 60 and 70 wt. % oxidizer (barium nitrate). The highest burning rate of 1.59 mm/s was found for the mixture with 60 wt. % oxidizer. Mixtures of the test item with cellulose were prepared in between 10 and 90 wt. % of the test item and tested. Due to the fact that the maximum burning rate of the mixtures of the test item with cellulose is 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 burning rates to verify these values. The mean burning rate for the mixture with the highest burning rate (10 %) was 0.97 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 (1.03 mm/s) was lower than the maximum burning rate of the reference mixture of cellulose and barium nitrate (1.59 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 has no oxidizing properties.

Oxidising liquids (reference 4.15-3)

The test item is a solid at ambient conditions. This hazard class is only applicable for liquids. Thus, the substance was not considered for classification as oxidising liquid.

Justification for classification or non-classification

Classification, Labelling, and Packaging Regulation (EC) No 1272/2008

Based on the chemical structure and taking into account the provisions laid down in Regulation (EC) No 1272/2008, as amended for the twelfth time in Regulation (EU) 2019/521, the substance is not considered to be classified for oxidising properties.