Pentaerythritol tetrabenzoate

Stability: thermal, sunlight, metals

Link to relevant study record(s)

Reference

Endpoint:

thermal stability

Type of information:

experimental study

Adequacy of study:

key study

Study period:

17.07.2018 - 01.08.2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 113 (Screening Test for Thermal Stability and Stability in Air)

Deviations:

no

Specific details on test material used for the study:

Name: Pentaerythritol tetrabenzoate
Batch no.: D170724-05
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)

Test substance thermally stable:

yes

Key result

Operating temp.:

>= 0 - <= 520 °C

Sublimation:

no

Transformation products:

no

Safety pre-test 1

Heating on a magnesia groove: When heated on a magnesia groove over a Bunsen burner, the test item melted and burned up without a residue.

Beaten with a hammer: When the test item was beaten with a hammer on the anvil, it solidified and looks unchanged.

Safety pre-test 2

After reaching a temperature of 520 °C and cooling down the weight of the crucible was recorded with 627.30 mg, the gold sealing of the crucible was red and bulged outwards. Then the crucible was opened, the test item was black.

Calibration: The measurement of indium after calibration met the validity criteria.

DSC Screening of the Test ITem: An endothermal event was observed at 102.23 °C (onset), evuivalent to 49.41 J/g.

Conclusions:

A screening test of the thermal stability of Pentaerythritol tetrabenzoate via DSC (differential scanning calorimetry) was conducted from 0°C to 520 °C. During the DSC run no exothermal, only an endothermal (onset 102.23°C) event was detected. Therefore, the test item is no subject to the classification procedures for self-reactive substances and the acceptance procedures for Class 1 explosives need not to be applied.

Executive summary:

A screening test of the thermal stability of Pentaerythritol tetrabenzoate via DSC (differential scanning calorimetry) following OECD 113 was conducted from 0°C to 520 °C. During the DSC run no exothermal, only an endothermal (onset 102.23°C) event was detected.

Therefore, the test item is no subject to the classification procedures for self-reactive substances and the acceptance procedures for Class 1 explosives need not to be applied according to the UN Handbook “Recommendations on the transport of dangerous goods; Manual of tests and criteria” (sixth revised edition, UN, 2015, Section 20.2.1, 20.3.3.3 and Appendix 6).

Description of key information

A screening test of the thermal stability of Pentaerythritol tetrabenzoate via DSC (differential scanning calorimetry) following OECD 113 was conducted from 0°C to 520°C. During the DSC run no exothermal, only an endothermal (onset 102.23°C) event was detected.

Justification for classification or non-classification

During the DSC run no exothermal, only an endothermal (onset 102.23°C) event was detected.

Therefore, the test item is no subject to the classification procedures for self-reactive substances and the acceptance procedures for Class 1 explosives need not to be applied according to the UN Handbook “Recommendations on the transport of dangerous goods; Manual of tests and criteria” (sixth revised edition, UN, 2015, Section 20.2.1, 20.3.3.3 and Appendix 6).