Registration Dossier
Registration Dossier
Data platform availability banner - registered substances factsheets
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Diss Factsheets
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: 203-657-3 | CAS number: 109-23-9
- 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
Boiling point
Administrative data
Link to relevant study record(s)
- Endpoint:
- boiling point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 07 Jun 2018 to 12 Sep 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling Point)
- Version / remarks:
- 27 July 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.2 (Boiling Temperature)
- Version / remarks:
- 30 May 2008
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Remarks:
- visual method (metal block) as supporting information
- Key result
- Atm. press.:
- 100.8 kPa
- Decomposition:
- yes
- Remarks:
- The test item decomposed prior to boiling
- Decomp. temp.:
- >= 293 °C
- Remarks on result:
- not determinable
- Conclusions:
- The test item was determined to decompose with loss of decomposition products from approximately 293 ºC (567 K) at 100.8 kPa. As the test item decomposed prior to boiling, no boiling point could be determined.
- Executive summary:
The study using the differential scanning calorimetry, using a procedure designed to be compatible with OECD TG 103, was performed to determine the boiling temperature of the test item in compliance with GLP. The test item was determined to decompose with loss of decomposition products from approximately 293 ºC prior to boiling, therefore no boiling point could be determined.
Reference
Tables: Thermographic data of the preliminary screening and determinations 1 – 4.
Thermal Event |
Interpretation |
Temperature |
|||
Determination A |
Determination B |
||||
ºC |
K |
ºC |
K |
||
Endotherm (onset) |
Loss of volatiles |
90.5 |
363.6 |
90.5 |
363.7 |
Endotherm (onset) |
Melting |
140.5 |
413.6 |
141.5 |
414.7 |
Endotherm (left limit) |
Decomposition with boiling |
294.6 |
567.8 |
294.1 |
567.2 |
After heating to 450 °C, the crucible had lost an average of 97% of the original mass.
Thermal Event |
Interpretation |
Temperature |
|||
Determination 1 |
Determination 2 |
||||
ºC |
K |
ºC |
K |
||
Endotherm (onset) |
Loss of volatiles |
91.4 |
364.6 |
91.2 |
364.4 |
Endotherm (onset) |
Melting |
141.7 |
414.8 |
141.0 |
414.1 |
Endotherm (left limit) |
Decomposition with boiling |
293.9 |
567.0 |
293.0 |
566.2 |
Atmospheric pressure: 100.8 kPa
After heating to 450 °C, the crucibles had lost an average of 95% of their original mass. The residue in the crucible was observed to be a black solid around the periphery.
Decomposition with boiling from approximately 293 ºC (566 K) at 100.8 kPa.
Thermal Event |
Interpretation |
Temperature |
|||
Determination 3 |
Determination 4 |
||||
ºC |
K |
ºC |
K |
||
Endotherm (onset) |
Loss of volatiles |
90.9 |
364.1 |
91.1 |
364.3 |
Endotherm (onset) |
Loss of volatiles |
127.5 |
400.7 |
127.5 |
400.7 |
Endotherm |
Melting range |
133.1 to 145.7 |
406.3 to 418.8 |
133.1 to 145.4 |
406.3 to 418.6 |
After heating to 200 °C, the crucibles had not lost mass.
The residue in the crucibles were observed to be off white brittle solid around the periphery.
Melting range: 133 to 146 ºC (406 to 419 K)
DISCUSSION
The melting determinations demonstrated three endotherms. The first and second were considered to be possibly due to loss of volatile constituent. The third broad endotherm was considered to be due to the melting phase transition of the test item. The shallow exotherm (not integrated) after melting up to approximately 170 °C may be due to further reaction or decomposition in the liquid state. The visual assessment confirmed the interpretation of the DSC determinations. Similar thermograms were obtained under air (preliminary/screen determinations) and nitrogen atmospheres (determinations 1 and 2) indicating the decomposition was most likely to be thermal rather than oxidative.
Description of key information
Boiling point could not be determined, decomposition temperature from approximately 293 °C, equivalent to OECD 103, differential scanning calorimentry, Butler 2018
Key value for chemical safety assessment
Additional information
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.