Reaction mass of stereoisomers of 4-METHYLENE-2-(2,2,3-TRIMETHYL-CYCLOPENT-3-ENYLMETHYL)-TETRAHYDRO-PYRAN and; 4-METHYL-6-(2,2,3-TRIMETHYL-CYCLOPENT-3-ENYLMETHYL)-3,6-DIHYDRO-2H-PYRAN and; 4-METHYL-2-(2,2,3-TRIMETHYL-CYCLOPENT-3-ENYLMETHYL)-3,6-DIHYDRO-2H-PYRAN

Oxidising properties

Link to relevant study record(s)

Reference

Endpoint:

oxidising liquids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

20-21 June 2011

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Remarks:

The study was conducted according to an internationally recognised method, and under GLP. No deviation affected the quality of the study. The substance is considered to be adequately identified. Therefore full validation applies.

Qualifier:

according to guideline

Guideline:

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

Version / remarks:

Regulation (EC) No 440/2008

Deviations:

no

Principles of method if other than guideline:

Not applicable

GLP compliance:

yes (incl. QA statement)

Remarks:

Landesamt für Umwelt, Wasserwirtschaft und Gewerbeaufsicht (inspected on 29 & 30 November 2010 / signed on 11 April 2011)

Specific details on test material used for the study:

- Storage condition of test material: The test item was stored in a closed vessel at 2-8 °C away from light and humidity.

Contact with:

powdered cellulose

Duration of test (contact time):

120 s

Key result

Sample tested:

test mixture 1:1

Remarks:

2.5 g of the liquid to be tested was mixed with 2.5 g of dried cellulose

Parameter:

mean pressure rise time

Remarks on result:

maximum pressure of 2070 kPa not reached

Results: The test item is considered as not oxidising, as the increase in pressure was very limited. The observed increase is attributed to the warming of the mixture in a closed vessel. Not even the lower pressure limit for the determination of oxidising properties was reached.

 

Validity: In a series of five trials, no result (time between 690 kPa and 2070 kPa) should differ by more than 30 % from the arithmetic mean. Results that differ by more than 30 % from the mean should be discarded, the mixing and filling procedure is improved and the testing is repeated. Because the pressure of even 690 kPa has never been reached, this validity criterion could not be checked.

 

Discussion: No signs of oxidising properties of the test item were detected, because the pressure never has risen even above the lower limit of the pressure range. The pressure rise time from the lower pressure limit to the upper pressure limit is therefore greater than the whole time for the experiments. The pressure rise time of the reference item is normally between 4-6 seconds. Therefore, the determination is said to be valid.

Interpretation of results:

GHS criteria not met

Conclusions:

The test item is Not an oxidizing liquid, based on very limited pressure rise.

Executive summary:

The oxidising properties of the substance were tested under GLP, according to the EU A.21 guideline. 

A 1:1 mixture with cellulose was used. In the five replicate the increase in pressure was very limited, and did not even reach the lower pressure limit for the determination. The observed increase was attributed to the warming of the mixture in the vessel.

Description of key information

No sufficient pressure rise, in a 1:1 mixture with cellulose (experimental).

Key value for chemical safety assessment

Oxidising properties:

non oxidising

Additional information

A fully reliable experimental study, conducted according to a recognized EC method and under GLP, is available. Therefore, it is considered as key study, and the result is retained as key data.

Justification for classification or non-classification

According to CLP and GHS criteria, a 1:1 mixture of test substance with cellulose did not reach the lower pressure limit for the determination, therefore the substance is NOT considered as an oxidising liquid.