Registration Dossier
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 247-955-1 | CAS number: 26748-41-4
- 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

Endpoint summary
Administrative data
Description of key information
The hydrolysis of tert-butylperoxyneodecanoate (TBPND) 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 TBPND (half-live: 0.9 hours) at pH = 4 and 50 °C.
The test item was biodegradable 26 % at day 28 in the closed bottle test according to OECD guideline 301. In the prolonged closed bottle test this compound was biodegraded 53 % at day 140. Therefore it can be concluded that the test item is not ready biodegradable, but inherently biodegradable.
The performance of simulation tests for biodegradation in water and sediment is scientifically unjustified.
The performance of tests for biodegradation in soil is scientifically unjustified.
The performance of a test for bioaccumulation in aquatic species, preferably fish, is scientifically unjustified.
The Koc was mesured using HPLC method. This method is applicable for substances which have log Koc value ranging from 1.5 to 5.0. The adorption coefficient was estimated to be 4424 and the log Koc was 3.64.
Additional information
The hydrolysis of tert-butylperoxyneodecanoate (TBPND) 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 TBPND (half-live: 0.9 hours) at pH = 4 and 50 °C. The degradation products of the hydrolysis of tert-butylperoxyneodecanoate (TBPND) (7,7-dimethyloctanoic acid andtert-butanol) were identified qualitatively using HPLC-MS and GC-FID, respectively.
The ready biodegradability of the test item was assessed according to OECD guideline 301 and EU-method C.6. The test item was biodegraded 26 % at day 28 in the Closed Bottle test. In the prolonged Closed Bottle test this compound was biodegraded 53 % at day 140. Therefore it can be concluded that the test item is not ready biodegradable, but inherently biodegradable.
The performance of simulation tests for biodegradation in water and sediment is scientifically unjustified.
REACH Regulation No. 1907/2006, Annex IX, Sect. 9.2.1.2, Col. 2, states as follows:
“9.2.1.2: The study need not to be conducted:
-if the substance is readily biodegradable, or
-if direct and indirect exposure of sediment is unlikely. ”
Direct and indirect exposure of the test item to water and sediment is highly unlikely. Due to the unstable nature of organic peroxides, it can be assumed that upon contact with water and organic matter, the test item undergoes rapid degradation resulting in the formation of respective alcohols and acids.Furthermore,TBPND was considered to be inherently biodegradable, therefore simulation testing for biodegradation in water was considered not scientifically justified.
The performance of tests for biodegradation in soil is scientifically unjustified.
REACH Regulation No. 1907/2006, Annex IX, Sect. 9.2.1.3, Col. 2, states as follows:
“9.2.1.3: The study need not to be conducted:
-if the substance is readily biodegradable, or
-if direct and indirect exposure of soil is unlikely. ”
Direct and indirect exposure of the test item to soil is highly unlikely. Due to the unstable nature of organic peroxides, it can be assumed that upon contact with soil and organic matter, the test item undergoes rapid degradation resulting in the formation of respective alcohols and acids. Furthermore, TBPND was considered to be inherently biodegradable, therefore simulation testing for biodegradation in sediment was considered not scientifically justified.
The performance of a test for bioaccumulation in aquatic species, preferably fish, is scientifically unjustified.
REACH Regulation No. 1907/2006, Annex IX, Sect. 9.3.2, Col. 2, states as follows:
“9.3.2Thestudy need not be conducted if:
-the substance has a low potential for bioaccumulation (for instance a logKow<= 3) and/or a low potential to cross biological membranes, or
-direct and indirect exposure of the aquatic environment is unlikely. ”
Direct and indirect exposure of the test item to water is highly unlikely. Due to the unstable nature of organic peroxides, it can be assumed that upon contact with water and organic matter, the test item undergoes rapid degradation resulting in the formation of respective alcohols and acids. Therefore, TBPND was considered to have no bioaccumulation potential. Using EPIWIN 4.1 a BCF of 925 L/Kgwwtwas calculated indicating no potential for bioaccumulation.
The Koc was measured using the HPLC method. This method is applicable for substances which have logKocvalue ranging from 1.5 to 5.0. The adorption coefficient was estimated to be 4424 and the logKocwas 3.64.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.

Route: .live2