Hydrocarbons, C4-7, C5-rich, isoprene-purifn. by-product

Oxidising properties

Administrative data

Endpoint:

oxidising liquids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

13.-20. July 2011

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Study performed according to EU testing guideline, but not under GLP conditions.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2011

Report date:

2011

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

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

Deviations:

no

GLP compliance:

no

Test material

Test material information

Constituent 1

Reference substance name:

Absorbent A4

IUPAC Name:

Absorbent A4

Details on test material:

- Name of test material (as cited in study report): Absorbent A4
- Substance type: UVCB
- Physical state: Transparent liquid without mechanical impurities, colour from light to dark
- Stability under test conditions: months
- Storage condition of test material: room temperature, in the dark

Study design

Contact with:

powdered cellulose

Duration of test (contact time):

>= 60 s

Results and discussion

Test results (Oxidising liquids)

Sample tested:

reference mixture (not specified)

Remarks:

migrated information

Parameter:

mean pressure rise time

Result:

4.63 s

Remarks on result:

other: +/- 30 %

Any other information on results incl. tables

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.

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	18.03	16.58	19.52	20.14	15.93
Time at 2070 kPag in s	22.33	21.00	24.21	25.04	20.77
Pressure rise time in s	4.30	4.43	4.69	4.90	4.85

 

The mean pressure rise time is 4.63 s. All measured values are within the tolerable range of ± 30% (3.24 – 6.02 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.

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	20.93	19.69	19.23	20.88	20.62
Time at 2070 kPag in s	not reached	not reached	not reached	not reached	not reached
Pressure rise time in s	n/a	n/a	n/a	n/a	n/a

In all tests no bursting of a rupture disc was observed.

The mean pressure rise time of the tests can not be calculated for thetest item because the pressure limit of 2070 kPa_g was not reached.

Applicant's summary and conclusion

Interpretation of results:

other: no oxidising properties

Remarks:

Migrated information

Conclusions:

The test item has no oxidising properties in the sense of the consolidated version of European Commission Regulation (EC) No. 440/2008, Method A.21.

Executive summary:

Due to the fact that the 1:1 mixture, by mass, of test item and cellulose has a mean pressure rise time higher than that of a 1:1 mixture, by mass, of 65 % nitric acid and cellulose the test item has no oxidising properties.