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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties


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Administrative data

Link to relevant study record(s)

explosive properties of explosives
Data waiving:
other justification
Justification for data waiving:

Description of key information

Property is waived based because 1,1,3,3-tetramethylbutyl hydroperoxide  is not classified as Organic Peroxide Type B.

Key value for chemical safety assessment

non explosive

Additional information

Substance has no explosive properties because it is not classified as Organic Peroxide Type B (reference CLP regulations and UN Recommendations on the Transport of Dangerous Goods, 16th revised edition, Section

See also ECHA guidance on the application of the CLP criteria, section 2.14.

1,1,3,3-tetramethylbutyl hydroperoxide is classified as type D.

Justification for classification or non-classification

1,1,3,3-tetramethylbutyl hydroperoxide is an Organic Peroxide, Type D.

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.