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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 249-200-1 | CAS number: 28754-28-1
- 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
Melting point / freezing point
Administrative data
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- August 24, 2017 - August 29, 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 017
- Report date:
- 2017
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
Test material
- Reference substance name:
- 3-(5-chlorobenzoxazol-2-yl)-7-(diethylamino)-2-benzopyrone
- EC Number:
- 252-722-2
- EC Name:
- 3-(5-chlorobenzoxazol-2-yl)-7-(diethylamino)-2-benzopyrone
- Cas Number:
- 35773-43-4
- Molecular formula:
- C20H17ClN2O3
- IUPAC Name:
- 3-(5-chloro-1,3-benzoxazol-2-yl)-7-(diethylamino)-2H-chromen-2-one
- Test material form:
- solid
Constituent 1
Results and discussion
Melting / freezing point
- Key result
- Melting / freezing pt.:
- 203.2 °C
- Decomposition:
- yes
Any other information on results incl. tables
Melting point / melting range: DSC measurement
Three DSC measurements with a heating rate of 10 K/min showed an endothermal effect (melting) in the temperature range of 190 – 215 °C. The onset temperature (seeTable1) was derived from the intersection of the tangent line with the highest slope of the endothermal peak with the baseline.
The first and the second DSC measurements showed an additional exothermal effect in the temperature range of 365 – 495 °C.
The results of the DSC measurements are summarized inTable 1.
Table1: Melting point (DSC measurements)
Ident No. |
Test item / mg |
Starting temperature / °C |
Final test temperature / °C |
Temperature range (endo-thermal) / °C |
Onset (melting) / °C |
Crucible |
Observations after the measurement |
36543 |
9.36 |
25 |
500 |
195 – 210 |
202.6 °C |
Aluminium with a hole |
- |
36545 |
8.89 |
25 |
500 |
190 – 215 |
203.6 °C |
Aluminium with a hole |
- |
36557 |
8.30 |
25 |
260 |
195 – 215 |
203.5 °C |
Aluminium with a hole |
Test item was a solidified yellow melt |
The test item had a melting point of 203.2°C (mean onset temperature).
Boiling point / boiling range:DSC measurement
No endothermal effects were observed after the melting and before the exothermal effect. The DSC measurements showed therefore no boiling after the melting effect and before the decomposition started. It decomposed before boiling could occur. The
test item had no boiling point under atmospheric conditions.
Applicant's summary and conclusion
- Executive summary:
The test item Disperse Yellow 184.1 had a melting point of 203.2°C (mean onset temperature).
The test item Disperse Yellow 184.1 had no boiling point under atmospheric conditions. It decomposed before boiling could occur.
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.