Registration Dossier
Registration Dossier
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EC number: 271-766-3 | CAS number: 68607-67-0
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- 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 substance is a reaction product and all formaldehyde is consumed due to excess amine and due to manufacturing methods.
However, it is possible that some excess C11-14 tert-alklyamine remains and this would contribute to the vapour pressure.
The higher molecular weight reaction products are thought to have very low vapour pressure and attempts have been made to predict using EPISuite - Guideline:
- other: Not specified
- Principles of method if other than guideline:
- Handbook figure for c11-14-tert alkylamine not qualified, but same figure appears in other secondary literature.
Modelling with EPISuite resulted in vapour pressure in same order of magnitude (ca 1 Pa @ 25 C) - GLP compliance:
- not specified
- Type of method:
- other: Not specified
- Specific details on test material used for the study:
- Not specified
- Temp.:
- ca. 25 °C
- Vapour pressure:
- ca. 23 Pa
- Remarks on result:
- other: Based on amine starting material
- Temp.:
- ca. 25 °C
- Vapour pressure:
- ca. 1 Pa
- Remarks on result:
- other: Based on modelling
- Conclusions:
- This starting amine used in the synthesis of the substance may be present as unreacted residues and this vapour pressure can be used as a maximum figure for the CSR and would be found if the UVCB was tested. The estimated vapour pressure of ca 1 Pa is found for the lowest molecular weight reaction product (monomer)
The manufacturing method, including excess amine and high temperatures means that there is no measurable formaldehyde in the production grade material.
Reference
Description of key information
This starting amine used in the synthesis of the substance may be present as unreacted residues and this vapour pressure can be used as a maximum figure for the CSR and would be found if the UVCB was tested. The estimated vapour pressure of ca 1 Pa is found for the lowest molecular weight reaction product
The manufacturing method, including excess amine and high temperatures means that there is no measurable formaldehyde in the production grade material.
Key value for chemical safety assessment
- Vapour pressure:
- 23 Pa
- at the temperature of:
- 25 °C
Additional information
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