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Diss Factsheets
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EC number: 203-650-5 | CAS number: 109-13-7
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
The hydrolys is of tert-butyl peroxy isobutyrate in different aqueous buffer solutions (pH = 4, 7and9) at 15, 37 and 50 °C was investigated using HPLC-UV. Measurements revealed a fast hydrolysis of tert-butyl peroxyisobutyrate. On the basis of retention times both potential hydrolysis products (tert-butyl hydroperoxide and isobutyricacid) were identified in stored buffer solutions at pH = 7 and pH = 9.
Key value for chemical safety assessment
- Half-life for hydrolysis:
- 2 901 h
- at the temperature of:
- 25 °C
Additional information
The hydrolysis of tert-butyl peroxyisobutyrate and the identification of the decomposition products was assessed in accordance with the OECD guideline 111 and the EU method C.7. The hydrolysis of tert-butyl peroxyisobutyrate in different aqueous buffer solutions (pH = 4, 7 and 9) at 15, 37 and 50 °C was investigated using HPLC-UV. Measurements revealed a fast hydrolysis of tert-butyl peroxyisobutyrate. On the basis of retention times both potential hydrolysis products (tert-butyl hydroperoxide and isobutyric acid) were identified in stored buffer solutions at pH = 7 and pH = 9. Applying Arrhenius equation the rate constant and half-live at pH = 4, 7 and 9 were calculated at 20 and 25°C. The half-life at pH = 4, 7 and 9 at 20 °C were determined to be 1224 hours, 8092 hours and 96 hours, respectively. The half-life at pH = 4, 7 and 9 at 25 °C were determined to be 781 hours, 2901 hours and 52 hours, respectively. It could be shown that the hydrolysis of tert-butyl peroxyisobutyrate was dependent from the pH and the temperature of the aqueous media. The degradation products (tert-butyl hydroperoxide and isobutyric acid) were successfully identified using HPLC.
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