Amines, C12-14-branched alkyl, dodecylbenzenesulfonates (1:1)

Oxidising properties

Link to relevant study record(s)

Reference

Endpoint:

oxidising liquids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

07 August 2017 - 19 January 2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Remarks:

Study was conducted in accordance with international guidelines and in accordance with GLP. All guideline validity criteria were met.

Qualifier:

according to guideline

Guideline:

EU Method A.21 (Oxidising Properties (Liquids))

Version / remarks:

Regulation (EC) 440/2008 of 30 May 2008

Deviations:

no

Qualifier:

according to guideline

Guideline:

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

Version / remarks:

Manual of Tests and Criteria, 6th edition, 2015.

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Contact with:

powdered cellulose

Duration of test (contact time):

80 s

Key result

Sample tested:

test mixture 1:1

Parameter:

preliminary test

Remarks on result:

spontaneous ignition does not occur

Sample tested:

test mixture 1:1

Parameter:

mean pressure rise time

Result:

42.87 s

Remarks on result:

other: Mean time to reach 690 kPa

Key result

Sample tested:

test mixture 1:1

Parameter:

mean pressure rise time

Remarks on result:

maximum pressure of 2070 kPa not reached

Sample tested:

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

Parameter:

mean pressure rise time

Result:

17.75 s

Remarks on result:

other: Mean time to reach 690 kPa

Sample tested:

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

Parameter:

mean pressure rise time

Result:

20.73 s

Remarks on result:

other: Mean time to reach 2,070 kPa

Table 4:          Test Item Results

	Test 1	Test 2	Test 3	Test 4	Test 5	Mean	Tolerance
Time [s] at 690 kPa	40.83	39.54	49.60	36.23	48.17	42.87	Minimum	Maximum
Time [s] at 2,070 kPa	Not reached	Not reached	Not reached	Not reached	Not reached	---	- 30 %	+ 30 %
Time for pressure rise [s]	---	---	---	---	---	---	---	---

 

 

 

Table 5:          Reference Item Results

	Test 1	Test 2	Test 3	Test 4	Test 5	Mean	Tolerance
Time [s] at 690 kPa	18.54	16.47	17.74	19.67	16.35	17.75	Minimum	Maximum
Time [s] at 2,070 kPa	21.30	19.38	20.68	22.97	19.36	20.73	- 30 %	+ 30 %
Time for pressure rise [s]	2.76	2.92	2.94	3.30	3.01	2.98	2.09	3.88

 

 

Interpretation of results:

GHS criteria not met

Conclusions:

Whilst a pressure rise above 690 kPa did occur when the test item was subject to experimental conditions, this pressure rise did not exceed 2,070 kPa and took longer to occur than the reference item. Further the test item did not spontaneously ignite when mixed with cellulose.

Executive summary:

Following a series of five tests, a mean pressure rise was determined for Amines, C12-C14-branched alkyl, dodecylbenzenesulfonates(1:1) under experimental conditions. The mean pressure rise achieved by the test item in a 1:1 mixture, by mass, with cellulose was between 690 kPa and 2070 kPa and occured over a time period of > 60 sec.

A reference item of nitric acid 65 % in a 1:1 mixture, by mass, with cellulose achieved a pressure rise that exceeded 2,070 kPa in a mean time 20.73 following five tests.

Description of key information

Oxidising Properties: Not oxidising; EU Method A.21.; S Seitz (2017)

Key value for chemical safety assessment

Oxidising properties:

non oxidising

Additional information

EU Method A.21. –  The oxidising properties of the test item were determined using a procedure designed to be compatible with Method A.21. Oxidising Properties (Liquids) of Commission Regulation (EC) No 440/2008 of 30 May 2008.

An aliquot (approx. 2.5 g) of test item was carefully mixed with about 2.5 g of dried cellulose and observed for ignition.  In the absence of ignition this mixture was then added in small portions to the test apparatus (as described in the technical guideline).  The apparatus was sealed in the required manner and the test mixture heated until the rupture disk ruptures or until at least 60 s have elapsed.  Five trials were performed with both the test item and a reference item (1:1 mixture, by mass, of 65 % aqueous nitric acid and cellulose). The time taken for the pressure to rise from 690 kPa to 2,070 kPa above atmospheric was noted. The mean pressure rise times for both the test item and the reference item were calculated.  No single result from this trials series should differ by more than 30 % from the arithmetic mean.

In all (five) test item trials the pressure exceeded 690 kPa but failed to reach 2,070 kPa.  Meaning the pressure to rise from 690 kPa to 2,070 kPa for the test item is greater 60 s.  All 5 tests were within the required range of ± 30 % of the arithmetic mean.  The reference item achieved a pressure to rise from 690 kPa to 2,070 kPa in a mean time of 2.98 s.

The test item cannot be categorised in accordance with Commission Regulation (EC) No 1272/2008 (Classification Labelling and Packaging) of 16 December 2008.

Justification for classification or non-classification

The test item is not classified as an oxidising liquid in accordance with the classification criteria defined in Section 2.13.2.1., Annex II of Regulation (EC) 1272/2008 of December 2008. The test item does not spontaneously ignite when in a 1:1 mixture by mass with cellulose, nor does such a mixture achieve a comparable rise in pressure when heated under confinement in comparison to a prescribed reference substance.