Pentaerythritol tetrabenzoate

Oxidising properties

Link to relevant study record(s)

Reference

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

20.09.2018 - 28.09.2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.17 (Oxidising Properties (Solids))

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Specific details on test material used for the study:

Name: Pentaerythritol tetrabenzoate
Appearance: off-white solid
Composition: Pentaerythritol tetrabenzoate >96%
CAS No.: 4196-86-5
EINECS-No.: 224-079-8
Molecular formula: C33H28O8
Molecular weight: 552.576 g/mol
Purity: >96%
Homogeneity: homogeneous
Expiry date: Nov. 2018
Storage: Room Temperature (20 ± 5°C)

Contact with:

powdered cellulose

Duration of test (contact time):

>= 106 - ca. 560 s

Key result

Sample tested:

other: 10% test item

Parameter:

burning rate

Result:

ca. 1.89 mm/s

Key result

Sample tested:

other: 20% test item

Parameter:

burning rate

Result:

ca. 1.31 mm/s

Key result

Sample tested:

other: 30% test item

Parameter:

burning rate

Result:

ca. 1.41 mm/s

Key result

Sample tested:

other: 40% test item

Parameter:

burning rate

Result:

ca. 0.91 mm/s

Key result

Sample tested:

other: 50% test item

Parameter:

burning rate

Result:

ca. 0.73 mm/s

Key result

Sample tested:

other: 60% test item

Parameter:

burning rate

Result:

ca. 0.59 mm/s

Key result

Sample tested:

other: 80% test item

Parameter:

burning rate

Result:

ca. 0.36 mm/s

Key result

Sample tested:

other: 90% test item

Parameter:

burning rate

Result:

ca. 0 mm/s

Sample tested:

other: 50% refernce item (Barium Nitrate)

Parameter:

burning rate

Result:

ca. 2.46 mm/s

Sample tested:

other: 60% refernce item (Barium Nitrate)

Parameter:

burning rate

Result:

ca. 3.29 mm/s

Sample tested:

other: 70% refernce item (Barium Nitrate)

Parameter:

burning rate

Result:

ca. 2.63 mm/s

Interpretation of results:

GHS criteria not met

Conclusions:

The highest burning rate of the three mixtures test item/cellulose was determined to be 2.00 mm/s. The maximum burning rate of the reference item was determined to be 3.29 mm/s. Therefore, the test item is considered to have no oxidising properties.

Executive summary:

The oxidising properties of Pentaerythritol tetrabenzoate were determined in a stuldy following EU A. 17. In the pre-test, the mixture of cellulose and the test item burned with orange sooting flame. The maximum burning rate of mixtures of a reference item (Ba(NO3)2) was determined. Likewise, the burning rates of mixtures of the test item with cellulose (in different proportions) were determined. The burning rates of the three mixtures with the highest burning rate were determined six times. The average burning rate undercut the maximum burning rate of the mixture of reference item and cellulose. The test item Pentaerythritol tetrabenzoate is considered to have no oxidising properties.

Description of key information

The oxidising properties of Pentaerythritol tetrabenzoate were determined in a stuldy following EU A. 17. In the pre-test, the mixture of cellulose and the test item burned with orange sooting flame. The maximum burning rate of mixtures of a reference item (Ba(NO3)2) was determined. Likewise, the burning rates of mixtures of the test item with cellulose (in different proportions) were determined. The burning rates of the three mixtures with the highest burning rate were determined six times.

Key value for chemical safety assessment

Oxidising properties:

non oxidising

Additional information

The average burning rate undercut the maximum burning rate of the mixture of reference item and cellulose. The test item Pentaerythritol tetrabenzoate is considered to have no oxidising properties.