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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 212-736-1 | CAS number: 865-33-8
Additional information on environmental fate and behaviour
Administrative data
- Endpoint:
- additional information on environmental fate and behaviour
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Peer reviewed data.
Data source
Referenceopen allclose all
- Reference Type:
- publication
- Title:
- Standard enthalpies of formation of sodium alkoxides
- Author:
- Leal J, de Matos P
- Year:
- 1 991
- Bibliographic source:
- Journal of Organometallic Chemistry 403: 1-10
- Reference Type:
- publication
- Title:
- SIDS for SIAM 22, Category of Methanolates CAS No: Sodium: 124-41-4, Potassium: 865-33-8
- Author:
- OECD
- Year:
- 2 006
- Report date:
- 2006
Materials and methods
Test material
- Reference substance name:
- Natriummethylat
- Cas Number:
- 124-41-4
- IUPAC Name:
- Natriummethylat
Constituent 1
Results and discussion
Any other information on results incl. tables
In contact with water
sodium and potassium methanolate react very rapidly,
quantitatively and exothermically to methanol and the corresponding
alkali hydroxides (Leal and de Matos 1991).
X+ -O-CH3 + H2O ---> CH3OH + OH- + X+ (with X= Na+ or K+)
Due to the very high pKa-value of methanol of 15.5, the equilibrium is on the
side of the reaction products under environmentally relevant conditions.
The
reaction products, alkali metal ions and methanol are stable in water while
hydroxide ions can be subject to neutralization reactions depending on
the buffer capacity of the carbonate/bicarbonate buffer systems (OECD 2006).
Applicant's summary and conclusion
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.
