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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 201-898-9 | CAS number: 89-32-7
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- April - May 2008
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: vapour pressure balance
- Specific details on test material used for the study:
- - Description: pale yellow crystalline solid
- Batch number: 7X18A
- Storage conditions: approximately 4 °C in the dark over silica gel - Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Key result
- Transition / decomposition:
- no
- Remarks on result:
- other: max. temperature tested was 140°C; far below the decomposition temp. of 210°C
- Conclusions:
- The vapour pressure of the test material has been determined to be 2.8 x 10 Exp.-6 Pa at 25°C.
- Executive summary:
The study was performed according EU testing method A.4. The vapour pressure balance effusion method was chosen. The vapour pressure of the test item was determined above the melting range and was: at 25 °C: 2.8 × 10 Exp.-6 Pa (mean of six determinations).
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- March - May 2008
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Justification for type of information:
- Pyromellitic dianhydride is not stable under certain conditions (e.g. in water). Therefore, a read-across is done to the corresponding decomposition product Pyromellitic acid for several endpoints. The present supporting test with PMA serves as bridging study.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: vapour pressure balance
- Specific details on test material used for the study:
- - Description: white powder
- Batch number: 8M30N
- Storage conditions: room temperature in the dark upto 04 April 2008, thereafter at approximately 4 °C, over silica gel, in the dark - Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Key result
- Transition / decomposition:
- no
- Remarks on result:
- other: max. temperature tested was 140°C; far below the decomposition temp. of 210°C
- Conclusions:
- The vapour pressure of the test material has been determined to be 6.3 x 10 Exp.-7 Pa at 25°C.
- Executive summary:
The study was performed according EU testing method A.4. The vapour pressure balance effusion method was chosen. The vapour pressure of the test item was determined above the melting range and was: at 25 °C: 6.3 × 10 Exp.-7 Pa (mean of six determinations).
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- GLP compliance:
- not specified
- Temp.:
- 305 °C
- Vapour pressure:
- 30 mm Hg
- Conclusions:
- The vapor pressure was determined to be 30 mm Hg at 305 °C.
- Executive summary:
A study similar or equivalent to OECD Guideline 104 (Vapour Pressure Curve) revealed a vapor pressure of 30 mm Hg at 305 °C.
Referenceopen allclose all
Description of key information
Pyromellitic dianhydride is not stable under certain conditions (e.g. in water). Therefore, a read-across is done to the corresponding decomposition product Pyromellitic acid for several endpoints. The present supporting test with PMA serves as bridging study.
Vapor pressure Pyromellitic dianhydride (PMDA)
The study was performed according EU testing method A.4. The vapour pressure balance effusion method was chosen. The vapour pressure of the test item was determined above the melting range and was: at 25 °C: 2.8 × 10 Exp.-6 Pa (mean of six determinations). In a supporting study similar or equivalent to OECD no. 104, the vapor pressure was found to be 30 mm Hg at 305°C.
Boiling point Pyromellitic acid (PMA / read-across)
The study was performed according EU testing method A.4. The vapour pressure balance effusion method was chosen. The vapour pressure of the test item was determined above the melting range and was: at 25 °C: 6.3 × 10 Exp.-7 Pa (mean of six determinations).
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 25 °C
Additional information
Source: GLP-report
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.
