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Diss Factsheets

Physical & Chemical properties

Oxidising properties

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Endpoint:
oxidising liquids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2018-10-17 to 2018-11-30
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:
2015
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Contact with:
powdered cellulose
Duration of test (contact time):
60 s
Key result
Sample tested:
reference mixture with 50% perchloric acid + cellulose (1:1 ratio)
Parameter:
mean pressure rise time
Result:
1 642 other: kPa
Key result
Sample tested:
reference mixture with 40% aqueous sodium chlorate + cellulose (1:1 ratio)
Parameter:
mean pressure rise time
Result:
1 826 other: kPa
Key result
Sample tested:
reference mixture with 65% nitric acid + cellulose (1:1 ratio)
Parameter:
mean pressure rise time
Result:
1 650 other: kPa
Key result
Sample tested:
test mixture 1:1
Parameter:
mean pressure rise time
Result:
1 701 other: kPa
Remarks on result:
maximum pressure of 2070 kPa not reached

Results and Interpretation

The test was performed with the comparison of 1:1 mixtures of test item with cellulose and reference substance (50% perchloric acid, 40% aq. sodium chlorate and 65 % nitric acid) with cellulose.

For the 1:1 ratio of test item and cellulose mixture a mean pressure rose of less than 2070 kPa was observed. Thus, the test item has no oxidizing properties and does not need to be classified as oxidizing liquid in Division 5.1.

The 1:1 ratio of reference substance (50% perchloric acid, 40% aq. sodium chlorate and 65% nitric acid) and cellulose mixture pressure rose and bursting disk ruptured within a minute.

Table 1: Oxidising properties of reference mixture (50% w/w perchloric acid and cellulose)

Name of Substance

Replication No.

Time Taken for Pressure Rose (Sec)

Pressure Rose (Bar)

Pressure Rose (kPa)

Observation

Reference substance (50% w/w Perchloric acid: Cellulose)

R1

1

15.43

1543

Bursting disk was ruptured within a minute

R2

1

16.53

1653

R3

1

18.18

1818

R4

1

16.12

1612

R5

1

15.83

1583

Mean ± SD & (%) RSD

-

1±0.0 & 0.0

-

1642±106.39 & 6.48

Table 2: Oxidising properties of reference mixture (40% w/w sodium chlorate and cellulose)

Name of Substance

Replication No.

Time Taken for Pressure Rose (Sec)

Pressure Rose (Bar)

Pressure Rose (kPa)

Observation

Reference substance (40% w/w sodium chlorate: cellulose)

R1

2

18.16

1816

Bursting disk was ruptured within a minute

R2

2

19.11

1911

R3

2

18.75

1875

R4

2

17.81

1781

R5

2

17.47

1747

Mean ± SD & (%) RSD

-

2±0.0 & 0.0

-

1826±67.07 & 3.67

Table 3: Oxidising properties of reference mixture (65% w/w Nitric acid and cellulose)

Name of Substance

Replication No.

Time Taken for Pressure Rose (Sec)

Pressure Rose (Bar)

Pressure Rose (kPa)

Observation

Reference substance (65% w/w Nitric acid: Cellulose)

R1

4

15.98

1598

Bursting disk was ruptured within a minute

R2

4

16.73

1673

R3

4

16.59

1659

R4

4

16.25

1625

R5

4

19.93

1693

Mean ± SD & (%) RSD

-

4±0.45 & 10.71

-

1650±38.04 & 2.31

Table 4: Oxidising properties of test item mixture

Name of Substance

Replication No.

Time Taken for Pressure Rose (Sec)

Pressure Rose (Bar)

Pressure Rose (kPa)

Observation

Test substance (Test item & Cellulose)

R1

60

16.94

1694

Bursting disk was not ruptured within a minute

R2

60

16.73

1673

R3

60

17.02

1702

R4

60

16.98

1698

R5

60

17.36

1736

Mean ± SD & (%) RSD

-

60±0.0 & 0.0

-

1701±22.73 & 1.34

kPa = 1 Bar x 10²

Interpretation of results:
GHS criteria not met
Conclusions:
The test item has no oxidizing properties.
Executive summary:

The oxidising properties of the test item was determined in accordance with test method of Part III sub-section 34.4.2 Test O.2.: Test for oxidising liquids of the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, sixth revised edition, 2015. The oxidizing properties test was performed with the comparison of 1:1 mixture of test item and cellulose with reference substance (50% perchloric acid, 40% aq. sodium chlorate and 65 % nitric acid) and cellulose. For the 1:1 ratio of test item and cellulose mixture a mean pressure rose of 1701 ± 22.73 kPa was observed. Thus, the test item has no oxidizing properties and does not need to be classified as oxidizing liquid in Division 5.1.

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
Endpoint:
oxidising solids
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
other:
Justification for type of information:
According to the guideline O.1 (Test for oxidizing solids), the test item is to be dried at 105 °C and the dried material is supposed to be used subsequently for the test. The testing laboratory started the oxidizing solids with the test item but during the trial on heating at 205 °C for about 2 hours, the test item (paste substance) was found to be viscous liquid. Hence, the test item is not suitable to carry out the oxidizing properties of solids (O.1) and the test for oxidizing liquids (O.2) was performed.

Description of key information

The test item has no oxidizing properties.

Key value for chemical safety assessment

Oxidising properties:
non oxidising

Additional information

Oxidising liquids

The oxidising properties of the test item was determined in accordance with test method of Part III sub-section 34.4.2 Test O.2.: Test for oxidising liquids of the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, sixth revised edition, 2015. The oxidizing properties test was performed with the comparison of 1:1 mixture of test item and cellulose with reference substance (50% perchloric acid, 40% aq. sodium chlorate and 65 % nitric acid) and cellulose. For the 1:1 ratio of test item and cellulose mixture a mean pressure rose of 1701 ± 22.73 kPa was observed. Thus, the test item has no oxidizing properties and does not need to be classified as oxidizing liquid in Division 5.1.

Oxidising gases

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

The study does not need to be conducted because the substance is a liquid. According to the guideline O.1 (Test for oxidizing solids), the test item is to be dried at 105 °C and the dried material is supposed to be used subsequently for the test. The testing laboratory started the oxidizing solids with the test item but during the trial on heating at 205 °C for about 2 hours, the test item (paste substance) was found to be viscous liquid. Hence, the test item is not suitable to carry out the oxidizing properties of solids (O.1) and the test for oxidizing liquids (O.2) was performed.

Justification for classification or non-classification

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

The available experimental test data are reliable and suitable for classification purposes under Regulation (EC) No 1272/2008. Based on the available data, the test item is not classified according to Regulation (EC) No 1272/2008 (CLP), as amended for the twelfth time in Regulation (EU) No 2019/521.