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EC number: 407-950-9 | CAS number: 895-85-2 INTEROX-PMBP-70W; INTEROX-PMPB-70W
- 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
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Melting point / freezing point
Administrative data
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- September 5-11, 1991
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Well conducted GLP study, according to Eu and OECD guidelines, purity mentioned.
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- September 1984
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- May 12, 1981
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- capillary method
- Melting / freezing pt.:
- 134.8 °C
- Atm. press.:
- 101 325 Pa
- Decomp. temp.:
- 138.8 °C
- Remarks on result:
- other: the substance decomposes immediately after the melting process, mp is above the SADT.
- Conclusions:
- The melting point of bis(4-methylbenzoyl)peroxide is 134.8°C and the substance decomposes immediately after the melting process. MP is above the SADT.
- Executive summary:
The determination of the melting point/melting range of DI-(4-METHYLBENZOYL)-PEROXID (INTEROX-PMBP) was based on EEC-Directive A.1 "Melting point/Melting range" (1984) and on OECD Guideline no. 102 "Melting Point/Melting Range" (1981), using the capillary method.
The melting point of bis(4-methylbenzoyl)peroxide is 134.8°C and the substance decomposes immediately after the melting process. MP is above the SADT.
Reference
None of the stages as outlined above were observed.
Observations
At approximately 383 K (110°C), the test substance consistency started to change.
The test substance melted at approximately 417 K (144°C). The test substance changed from a white solid into a yellow liquid.
With increasing temperature, the test substance colour changed gradually from yellow into orange/brown.
At 408.0 K (138.8°C), the test substance showed the formation of gas (formation of bubbles and foam, test substance raised in the tube). The test substance changed from a white solid into a yellow liquid.
After cooling, the test substance remained yellow.
RESULTS
The determination of the melting point/melting range of DI-(4-METHYLBENZOYL)-PEROXID (INTEROX-PMBP) was performed in duplicate, using an Electrothermal melting point apparatus.
The melting temperature of DI-(4-METHYLBENZOYL)-PEROXID (INTEROX-PMBP) was determined to be 408 K (134.8°C).
At this temperature, the test substance changed from a white solid into a yellow liquid. This change in colour indicates decomposition immediately after the melting process.
The yellow colour remained after cooling down.
In conclusion, the melting point of
DI-(4-METHYLBENZOYL)-PEROXID (INTEROX-PMBP) is 408.0 K (134.8°C).
DI-(4-METHYLBENZOYL)-PEROXID (INTEROX-PMBP) decomposes immediately after the melting process.
Description of key information
The melting point of bis(4-methylbenzoyl)peroxide is 134.8°C and the substance decomposes immediately after the melting process.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 134.8 °C
Additional information
This endpoint is supported by ten literature data.
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.
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