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EC number: 213-147-2 | CAS number: 927-07-1
- 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

Flammability
Administrative data
Link to relevant study record(s)
- Endpoint:
- flammable gases
- Data waiving:
- study technically not feasible
- Justification for data waiving:
- the study does not need to be conducted because the substance is a liquid
- Endpoint:
- substances / mixtures which in contact with water emit flammable gases
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the experience in production or handling shows that the substance does not react with water, e.g. the substance is manufactured with water or washed with water
- Endpoint:
- pyrophoric solids
- Data waiving:
- study technically not feasible
- Justification for data waiving:
- the study does not need to be conducted because the substance is a liquid
- Endpoint:
- self-heating substances / mixtures
- Data waiving:
- study technically not feasible
- Justification for data waiving:
- the study does not need to be conducted for organic peroxides
- Endpoint:
- flammable solids
- Data waiving:
- study technically not feasible
- Justification for data waiving:
- the study does not need to be conducted because the substance is a liquid
- Endpoint:
- pyrophoric liquids
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the substance is known to be stable in contact with air at room temperature for prolonged periods of time (days) and hence, the classification procedure does not need to be applied
Referenceopen allclose all
Description of key information
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. The substance is classified as Organic Peroxide Type C, H242.
Key value for chemical safety assessment
- Flammability:
- not classified
Additional information
Flammability:
According to chapter 2.15 of the CLP regulation, organic peroxides are thermally unstable substances or mixtures, which can undergo exothermic self-accelerating decomposition. In addition, they can have one or more of the following properties:
(i) be liable to explosive decomposition;
(ii) burn rapidly;
(iii) be sensitive to impact or friction;
(iv) react dangerously with other substances.
An organic peroxide is regarded as possessing explosive properties when in laboratory testing the mixture (formulation) is liable to detonate, to deflagrate rapidly or to show a violent effect when heated under confinement.
The classification of an organic peroxide in one of the seven categories “Types A to G” is dependent on its detonation, thermal explosion and deflagrating properties, its response to heating and the concentration.
Flammability in contact with water:
Based on the molecular structure as well as experience in handling and use, the substance shows no water reactive properties.
Pyrophoric properties:
Based on the molecular structure as well as experience in handling and use the substance shows no pyrophoric properties.
Self-heating substance:
According to Guidance on information requirements and chemical safety assessment, R7a, Endpoint specific guidance, R.7.1.10.7, the UN Test method N.4, for self-heating substances and mixtures does not need to be conducted as the substance is classified as organic peroxide.
Self-reactive substance:
According to Guidance on information requirements and chemical safety assessment, R7a, Endpoint specific guidance, R.7.1.10.4, the UN test series A - H for self-reactive substances and mixtures, do not need to be conducted as the substance is classified as organic peroxide.
Flammable aerosol:
According to Guidance on information requirements and chemical safety assessment, R7a, Endpoint specific guidance, R.7.1.21.1, a study for flammable Aerosol does not need to be conducted as tert-Butylperoxy-3,5,5-trimethylhexanoat does not meet the definition for Aerosol.
Justification for classification or non-classification
Based on the results of the UN-MTC tests (below) and the decision logic, tert-butyl peroxypivalate is classified as Organic Peroxide type C.
Phys-chem UN testing | UN test method | Concentration | Evaluation and Results | Reference* |
Propagation of detonation test series A | A.1,BAM 50/60 steel tube test | 75 % | cav. version 16 cm, No |
|
Propagation of deflagration test series C | C.1, Time/Pressure test | 75 % | 494 ms, Yes, slowly |
|
C.2, Deflagration test | 75 % | 0.08 mm/s, No |
| |
Effect of heating under defined confinement test series E | E.1, Koenen test | 75 % | 2.0 mm, Violent |
|
E.2, Dutch pressure vessel test | 75 % | 7.0 mm, Medium |
| |
Explosive power test series F | F.3, Trauzl Test | 75 % | 14.0 mL/ 10g, Low |
|
Explosion as packaged for transport series G | G.1 Thermal explosion test in package | 80 % | package type 6HG2, 30l, No |
|
Self Accelerating Decomposition Temperature (SADT) test series H | H.4, Heat accumulation storage test (400 ml Dewar vessel) | 75 % | 25 °C |
|
*All Data are Company Data/ DATATOP/ UN Test Manual
Classification of 75%:
According to UN: Organic Peroxide Type C, liquid, temperature-controlled, UN 3113
Based on the study results, the molecular structure and experience in handling and use, the substance is not classified and labelled as flammable, flammable in contact with water, pyrophoric, self-reactive substance and self-heating substance according to Regulation (EC) No 1272/2008 (CLP). In additon based on the results of the UN-MTC tests, the decision logic and in accordance with Regulation (EC) No 1272/2008 tert-butyl peroxypivalate is classified as Organic Peroxide Type C with H242 (heating may cause a fire).
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