Registration Dossier
Registration Dossier
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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: 947-354-0 | CAS number: -
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Justification for type of information:
- The registered substance contains MMA at approximately 20-40% of the composition. THis substance is the solvent used in the manufacturing process and it cannot be removed from the substance, hence it is considered as an additive/constituent. THis substance is more volatile than the other constituents and consequently, the vapour pressure of MMA will drive the vapour pressure of this substance. Therefore the vapour pressure of MMA is used as a surrogate for the vapour pressure of the REACH substance.
- Reason / purpose for cross-reference:
- read-across source
- Qualifier:
- according to guideline
- Guideline:
- other: not reported
- GLP compliance:
- no
- Type of method:
- other: not reported
- Specific details on test material used for the study:
- Substance identified by name and CAS number.
- Temp.:
- 25.5 °C
- Vapour pressure:
- 40 mm Hg
- Conclusions:
- Methyl methacrylate is a solvent in Methacryloxyisopropyl acid phthalate. The vapour pressure of methyl methacrylate is 40 mmHg (53 hPa) at 25.5 °C.
Reference
Description of key information
The vapour pressure of methyl methacrylate is 40 mmHg (53 hPa) at 25.5 °C.
Key value for chemical safety assessment
- Vapour pressure:
- 53 hPa
- at the temperature of:
- 25.5 °C
Additional information
It was not possible to determine the vapour pressure of the registered substance using either of the 2 standard methodologies (balance method or isoteniscope). In both attempts to assess vapour pressure the solvent (methylmethacrylate) and other volatile constituents evaporated and the remaining material solidified and cured. No reading was possible for this material.
Consequently the more conservative vapour pressure of the solvent is used in place of an actual vapour pressur for the registered substance.
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.
