Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
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: 208-293-9 | CAS number: 520-45-6
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:
- 08 September 2010
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Principles of method if other than guideline:
- The sample is filled into a test tube and is heated in the light path via a IR light barrier. The transmission is detected. As soon as the sample is clearly melted, the transmission jumps up and is showing the end of the melting process (here: transmission >= 40 %).
- GLP compliance:
- no
- Other quality assurance:
- other: ISO 9001:2008; FAMI-QS
- Type of method:
- other: capillary tube with photocell detection
- Specific details on test material used for the study:
- Batch No. 11510, 11511, 11512
- Melting / freezing pt.:
- >= 111.1 - <= 111.3 °C
- Atm. press.:
- 101.3 kPa
- Decomposition:
- no
Reference
Test results
| Test Description | Result for Batch | ||
| 11510 | 11511 | 11512 | |
Melting range starting point |
111.1 |
111.2 |
111.1 |
Melting range ending point |
111.2 |
111.3 |
111.2 |
Description of key information
The substance dehydroacetic acid has a melting point of 111.1 -111.3 °C (capillary method).
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 111.1 °C
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.
