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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint summary

Administrative data

Description of key information

Additional information

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

The Self-Accelerating Decomposition Temperature (SADT) of the substances is 60°C (reference SADT: CLP regulations and UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, 5th revised edition, sub-sections 28.1, 28.2, 28.3 and Table 28.3.)

1,1,3,3-tetramethylbutyl hydroperoxide is a colourless clear liquid. So: The substance is not an aerosol or a gas.

The melting point is below a lower limit of -20°C.

The relative density of 1,1,3,3-tetramethylbutyl hydroperoxide at 20°C is 0.8886

The estimated vapour pressure of 1,1,3,3-tetramethylbutyl hydroperoxide (without volatile impurities) is 15 Pa at 20°C.

The partition coefficient log Kow value for 1,1,3,3-tetramethylbutyl hydroperoxide is 2.9.

The water solubility of 1,1,3,3-tetramethylbutyl hydroperoxide is 2.8 g/L at 20°C.

The flashpoint of the commercial product 1,1,3,3-tetramethylbutyl hydroperoxide with 2.4 -2 % diisobutylene is 37-51°C.

The substance is not flammable and has no explosive and no oxidising properties.

The study on corrosion towards metal is technically not feasible.

The dynamic viscosity of 1,1,3,3-Tetramethylbutyl hydroperoxide is 13.0 mPa.s at 20°C.