N, N-bis-(2-hydroxyethyl) dimethyl ammonium methane sulfonate

Oxidising properties

Link to relevant study record(s)

Reference

Endpoint:

oxidising liquids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Study initiation date: 2021-02-02;
Experimental completion date: 2021-02-09

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

UN Manual of Tests and Criteria: Test O.2 (Test for oxidizing liquids)

Version / remarks:

UN Manual of Tests and Criteria, revision 7 (2019),
Part III: O.2. Oxidizing properties of liquids

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Contact with:

powdered cellulose

Duration of test (contact time):

>= 18.58 - <= 22.22 s

Key result

Sample tested:

test mixture 1:1

Remarks:

test item : cellulose

Parameter:

mean pressure rise time

Remarks on result:

maximum pressure of 2070 kPa not reached

Remarks:

No pressure rise up to 2070 kPa_g was detected in any test

Key result

Sample tested:

reference mixture with 65% nitric acid + cellulose (1:1 ratio)

Parameter:

mean pressure rise time

Result:

3.23 s

Remarks on result:

other: n=5 results within tolerable range of +/- 30 % (2.26 – 4.20 s) of mean pressure rise time

Test series of at least 5 tests each were performed with the test item and with 65 % nitric acid in 1:1 mixture, by mass, with cellulose. The cellulose was dried at 105 ± 5 °C until the weight was constant. Due to the particle size of the cellulose (approximately 60 µm) grinding and sieving was not necessary.

Reference substance
In Table 1 the pressure rise times from 690 kPa_g to 2070 kPa_g for the 1:1 mixtures, by mass, of 65 % (w/w) nitric acid and cellulose are shown. Figure 1 given in the illustration attached to this ESR shows the time pressure profile.

Table 1: Pressure rise time for the 1:1 mixtures, by mass, of 65 % nitric acid and cellulose

	Test 1	Test 2	Test 3	Test 4	Test 5
Time at 690 kPag in s	13.32	14.87	13.24	11.37	0.99
Time at 2070 kPag in s	16.08	18.75	16.74	14.40	3.96
Pressure rise time in s	2.77	3.88	3.50	3.03	2.97

The mean pressure rise time was 3.23 s. All measured values are within the tolerable range of +/- 30 % (2.26 – 4.20 s) of the mean pressure rise time.

Test Item
In Table 2 the pressure rise times from 690 kPa_g to 2070 kPa_g for the 1:1 mixtures, by mass, of the test item and cellulose are shown. Figure 2 given in the illustration attached to this ESR shows the time pressure profile.

Table 2: Pressure rise time for the 1:1 mixtures, by mass, of test item and cellulose.

	Test 1	Test 2	Test 3	Test 4	Test 5
Time at 690 kPag in s	21.46	20.80	18.58	22.22	20.89
Time at 2070 kPag in s	-*	-*	-*	-*	-*
Pressure rise time in s	-	-	-	-	-

Remark: *) No value could be measured as the corresponding pressure was not reached within the time frame of the test.

No pressure rise up to 2070 kPa_g was detected in any test.
Due to the fact that the 1:1 mixture, by mass, of test item and cellulose had a pressure rise time higher than that of a 1:1 mixture, by mass, of 65 % (w/w) nitric acid and cellulose the test item had no oxidizing properties and no further reference mixtures had to be measured.

 

 

Interpretation of results:

GHS criteria not met

Conclusions:

No oxidizing properties (UN-Test O.2)

Executive summary:

The test item MAT-144 was tested for any oxidizing properties in a reliable and valid study performed compliant with GLP according to UN test method O.2 (UN Manual of Tests and Criteria, revision 7, 2019).
The 1:1 mixture, by mass, of test item MAT-144 and cellulose had a pressure rise time higher than that of a 1:1 mixture, by mass, of 65 % (w/w) nitric acid and cellulose (no pressure rise up to 2070 kPa_g was detected in any test). The test item had no oxidizing properties, and no further reference mixtures had to be measured.
Concluding, the test item had no oxidizing properties under the test conditions in the sense of the UN Manual of Tests and Criteria, revision 7 (2019) Test O.2.
Due to these results the substance does not have to be classified as an “oxidizing liquid”, class 5.1, according to the transport regulations and chapter 2.13* according to GHS (CLP) regulations.

*) Chapter 2.13 of the UN Globally harmonized system of classification and labelling of chemicals (GHS), 8th revised edition, 2019 (UN GHS) and also chapter 2.13 in the CLP regulation1272/2008 (EU GHS).

Description of key information

No oxidizing properties (UN-Test O.2)

Key value for chemical safety assessment

Oxidising properties:

non oxidising

Additional information

For details, see section "Justification for classification or non-classification" below.

Justification for classification or non-classification

The test item MAT-144 was tested for any oxidizing properties in a reliable and valid study performed compliant with GLP according to UN test method O.2 (UN Manual of Tests and Criteria, revision 7, 2019).
The 1:1 mixture, by mass, of test item MAT-144 and cellulose had a pressure rise time higher than that of a 1:1 mixture, by mass, of 65 % (w/w) nitric acid and cellulose (no pressure rise up to 2070 kPa_g (g = gauge pressure, i.e. pressure above ambient/atmospheric pressure) was detected in any test). The test item had no oxidizing properties, and no further reference mixtures had to be measured.
Concluding, the test item had no oxidizing properties under the test conditions in the sense of the UN Manual of Tests and Criteria, revision 7 (2019) Test O.2.
Due to these results the substance does not have to be classified as an “oxidizing liquid”, class 5.1, according to the transport regulations and chapter 2.13* according to GHS (CLP) regulations.

*) Chapter 2.13 of the UN Globally harmonized system of classification and labelling of chemicals (GHS), 8th revised edition, 2019 (UN GHS) and also chapter 2.13 in the CLP regulation1272/2008 (EU GHS).