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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
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EC number: 223-498-3 | CAS number: 3926-62-3
Categories
- Category name:
- Chloroacetates
Justifications and discussions
- Category definition:
- Monochloroacetates
- Category description:
- This category covers the following substances: monochloroacetic acid and its sodium salt
- Category rationale:
- Free monochloroacetic acid is a strong organic acid, which forms water-soluble salts with bases. In any medium at or near neutral pH the predominant form present is the chloroacetate anion. The salts are therefore expected to be toxicologically equivalent to the free acid, except for the acute corrosive properties, which are at least partly determined by the very low pH of strong solutions of the acid.
The category hypothesis is that the members have the same functional group (monochloroacetate). Sodium is not significant in respect of all the properties under consideration. In dilute aqueous conditions of defined pH a salt will behave no differently to the parent acid, at identical concentration of the particular speciated form present and will be fully dissociated. Hence some properties (measured or expressed in aqueous media, e.g. ecotoxicity) for a salt can be directly read-across (with suitable mass correction) to the parent acid and vice versa.
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.
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