Registration Dossier

Physical & Chemical properties

Explosiveness

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
explosive properties of explosives
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
the study does not need to be conducted because there are no chemical groups present in the molecule which are associated with explosive properties

Description of key information

An explosiveness study with the substance tert-butylperacetate was waived as the substance is classified as Organic Peroxide Type C and not as Organic Peroxide Type B.

Key value for chemical safety assessment

Explosiveness:
non explosive

Additional information

2,5-dimethyl-2,5-di(tert-butylperoxy)-3-hexyne has no explosive properties because it is not classified as Organic Peroxide Type B (reference CLP regulations 2.15.2.2 and UN Recommendations on the Transport of Dangerous Goods, 17th revised edition, Section 2.5.3.2.4). See also ECHA guidance on the application of the CLP criteria, section 2.14. 2,5-dimethyl-2,5-di(tert-butylperoxy)-3-hexyne is classified as organic peroxide Type C. The classification of organic peroxides into one of the seven categories of “Types A to G” is given in decision logic Figure 2.15.1 of CLP, based on the test series A to H, as described in the Part II of the UN-MTC. See endpoint 4.13 Flammability.

Justification for classification or non-classification

According to Regulation (EC) No 1272/2008 (CLP) 2,5-dimethyl-2,5-di(tert-butylperoxy)-3-hexyne is classified as Organic Peroxide Type C with H242 (Heating may cause a fire).