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Reference
Endpoint:
oxidising liquids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
29. Aug. 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.21 (Oxidising Properties (Liquids))
Version / remarks:
Commission Regulation (EC) No 440/2008 of 30 May 2008 published on 31 May 2008 Method A.21 “Oxidising Properties (Liquids)“
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Specific details on test material used for the study:
No further details specified in the study report.
Contact with:
powdered cellulose
Duration of test (contact time):
60 s
Key result
Sample tested:
test mixture 1:1
Parameter:
mean pressure rise time
Remarks on result:
other: The test item Petroleum Resins (Kendex 0897) is considered as not oxidising, as the increase in pressure took place very slowly, taking much more time than the reference mixture.

Weighing

The weighing and observations of the experiments are presented in the following table:

 

Time Intervals

Substance

Experiment No.

Amount test item / reference substance [g]

Amount cellulose [g]

Observations

Test ItemPetroleum Resins (Kendex 0897)and
Cellulose

1

2.5

2.5

pressure increase above

2070 kPa.

2

2.5

2.5

pressure increase above

2070 kPa.

3

2.5

2.5

pressure increase above

2070 kPa.

4

2.5

2.5

pressure increase above

2070 kPa.

5

2.5

2.5

pressure increase above

2070 kPa.

Reference Item Nitric
Acid and Cellulose

1

2.5

2.5

bursting of the bursting disc

2

2.5

2.5

bursting of the bursting disc

3

2.5

2.5

bursting of the bursting disc

4

2.5

2.5

bursting of the bursting disc

5

2.5

2.5

bursting of the bursting disc

 

Time Intervals

The time intervals which were recorded between the lower pressure value (690 kPa) and the upper pressure value (2070 kPa) in each experiment are presented in the following table:

 

Time Intervals

Content of Test System

Experiment No.

Time lapse between 690 kPa and 2070 kPa [s]

Mean time lapse [s]

Difference to Mean [%]

Test Item

Petroleum Resins (Kendex 0897)and Cellulose

1

00:00:19.117

 

-10%

2

00:00:13.533

 

22%

3

00:00:13.929

Mean:

00:00:17.315

20%

4

00:00:18.422

sd:

00:00:03.478

-6%

5

00:00:21.575

RSD: 20%

-25%

Reference Item Nitric Acid and Cellulose

1

00:00:02.917

 

1%

2

00:00:02.471

 

16%

3

00:00:03.436

Mean:

00:00:02.947

-17%

4

00:00:02.954

sd:

00:00:00.342

0%

5

00:00:02.957

RSD: 12%

0%

 

Interpretation of results:
GHS criteria not met
Conclusions:
The test item Petroleum Resins (Kendex 0897) is considered as not oxidising, as the increase in pressure took place very slowly, taking much more time than the reference mixture.
Therefore, Petroleum Resins (Kendex 0897) should not be classified as oxidizing liquid.
Executive summary:

Determination of the oxidising properties of Petroleum Resins (Kendex 0897) according to EU A.21

 

Findings and Results: 

Five determinations were performed with the test item Petroleum Resins (Kendex 0897), using a mixture with cellulose.

 

No signs of oxidising properties of the test item could be observed throughout the course of the test as all experiments reached a pressure above 2070 kPa, taking much more time than the reference mixture.

The variation of all evaluated experiments was below 30 %.

The reference mixture of cellulose and nitric acid (65 %) showed a fast increase above 2070 kPa within 2.95 seconds. Therefore, the determination can be considered to be valid. No observations were made which might cause doubts concerning the validity of the study outcome.

 

Therefore, Petroleum Resins (Kendex 0897) should not be classified as oxidizing liquid.

Description of key information

No signs of oxidising properties of the test item could be observed throughout the course of the test as all experiments reached a pressure above 2070 kPa.

Key value for chemical safety assessment

Oxidising properties:
non oxidising

Additional information

Five determinations were performed with the test item Petroleum Resins (Kendex 0897), using a mixture with cellulose.

 

No signs of oxidising properties of the test item could be observed throughout the course of the test as all experiments reached a pressure above 2070 kPa, taking much more time than the reference mixture.

The variation of all evaluated experiments was below 30 %.

The reference mixture of cellulose and nitric acid (65 %) showed a fast increase above 2070 kPa within 2.95 seconds. Therefore, the determination can be considered to be valid. No observations were made which might cause doubts concerning the validity of the study outcome.

Justification for classification or non-classification

No signs of oxidising properties of the test item could be observed throughout the course of the test as all experiments reached a pressure above 2070 kPa, taking much more time than the reference mixture.

Therefore, Petroleum Resins (Kendex 0897) should not be classified as oxidizing liquid.