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Reference
Endpoint:
oxidising liquids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
31 January - 15 Mars 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
The study was conducted according to an internationally recognised method, and under GLP. The substance is considered to be adequately characterised. Therefore full validation applies.
Qualifier:
according to
Guideline:
UN Manual of Tests and Criteria: Test O.2 (Test for oxidizing liquids)
Version / remarks:
UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, Revision 6, Part III, UN test O.2.
Depending on the results 65 % nitric acid, 40 % sodium chlorate (aqueous solution) and 50 % perchloric acid will be used as reference items for the oxidising properties.
Deviations:
no
GLP compliance:
yes (incl. certificate)
Remarks:
inspected on 20 and 21 June 2017 / signed on 04 September 2017
Contact with:
powdered cellulose
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:
5.25 s

Individual results

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 Table1the pressure rise times from 690 kPagto 2070 kPagfor the 1:1 mixtures, by mass, of 65 % (w/w) nitric acid and cellulose are shown.Figure1(page8) shows the time pressure profile.

Table 4.15/1.-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 kPagin s

14.37

13.28

13.45

14.67

13.96

Time at 2070 kPagin s

20.40

19.22

18.40

19.67

18.27

Pressure rise time in s

6.03

5.94

4.95

5.01

4.31

The mean pressure rise time was 5.25 s. All measured values are within the tolerable range of± 30 % (3.67 – 6.82 s) of the mean pressure rise time.

Test item

InTable 4.15/2.-The pressure rise times from 690 kPagto 2070 kPagfor the 1:1 mixtures, by mass, of the test item and cellulose are shown.

Table 4.15/2.-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 kPagin s

25.27

20.78

22.39

28.57

59.01

Time at 2070 kPagin s

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---

---

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Pressure rise time in s

---

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---

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No pressure rise up to 2070 kPagwas detected in any test.

Due to the fact that the 1:1 mixture, by mass, of test item and cellulose had a mean 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.

Final results

The test item had no oxidizing properties under the test conditions in the sense of the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, 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.

Interpretation of results:
GHS criteria not met
Conclusions:
The test item had no oxidizing properties under the test conditions.
Executive summary:

A study was conducted under GLP according to UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, Revision 6, Part III, UN test O.2. Due to the obtained 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.

Description of key information

The test item had no oxidizing properties under the test conditions.

Key value for chemical safety assessment

Oxidising properties:
non oxidising

Additional information

A GLP fully reliable experimental study was conducted according to UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, Revision 6, Part III, UN test O.2, will be available. Therefore, it is considered as a key study. The result is retained as key data.

Justification for classification or non-classification

The test item had no oxidizing properties under the test conditions in the sense of the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, 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[1] according to GHS (CLP) regulations.


[1]Chapter 2.13 of the UN Globally harmonized system of classification and labelling of chemicals (GHS), 7th revised edition, 2017 (UN GHS) and also chapter 2.13 in the CLP regulation1272/2008 (EU GHS).