Registration Dossier

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Di-tert-butyl 3,3,5-trimethylcyclohexylidene diperoxide is classified as a peroxide Type B. Flammability is an intrinsic hazard in this class.

Di-tert-butyl 3,3,5-trimethylcyclohexylidene diperoxide is a colourless clear liquid with a faint odour, so it is not an aerosol or a gas under pressure.

The freezing point of di-tert-butyl 3,3,5-trimethylcyclohexylidene diperoxide is below -29°C.

The density of di-tert-butyl 3,3,5-trimethylcyclohexylidene diperoxide at 20°C is 0.910 g/cm3.

The estimated vapour pressure of di-tert-butyl 3,3,5-trimethylcyclohexylidene diperoxide at 20°C is 0.009 Pa.

The partition coefficient octanol/water of di-tert-butyl 3,3,5-trimethylcyclohexylidene diperoxide Log Kow is expected to be 7.0.

The water solubility of di-tert-butyl 3,3,5-trimethylcyclohexylidene diperoxide is less than 0.004 mg/L. In recent studies the water solubility of the registered substance was observed to be between 0.0004 and 0.004 mg/L based on centrifuged solutions but a best estimate of 0.002 mg/L is used for risk assessment purposes. However,it can be concluded that while the substance is soluble in water at <4 µg/L, the substance readily forms semi-stable emulsions under laboratory conditions when even moderate levels of mechanical energy are used. the amount of substance in the emulsion is proportional ot the amount of energy used.

The substance is classified as having explosive properties based on a category approach.

The substance has no oxidizing properties.

The study on corrosion towards metal is technically not feasible.

The viscosity of di-tert-butyl 3,3,5-trimethylcyclohexylidene diperoxide is 35.5 mPa.s at 20°C.

Additional information