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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 200-624-5 | CAS number: 66-25-1
Flash point
Administrative data
Link to relevant study record(s)
- Endpoint:
- flash point of flammable liquids
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2018-05-15 - 2018-11-16
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.9 (Flash-Point)
- Version / remarks:
- 31 May 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.6315 (Flammability)
- Version / remarks:
- August 1996
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: see 'Version / remarks"
- Version / remarks:
- UN Handbook "Recommendations on the Transport of Dangerous Goods - Manual of Tests and Criteria" Rev. 6, 2015, Method 32.4 "Test methods used for determining flash point and viscosity"
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- non-equilibrium method closed cup
- Flash point apparatus:
- Pensky-Martens apparatus
- Specific details on test material used for the study:
- The test item was stored in a closed vessel under inert gas at room temperature (15.8 - 23.0°C).
- Key result
- Flash point:
- 26 °C
- Atm. press.:
- 1 013 hPa
- Interpretation of results:
- other: Category 3 (flammable liquids) based on EU GHS criteria
- Conclusions:
- The measured flash point is 26.0 ± 0.5 °C (corresponding to 299.2 ± 0.5 K).
- Executive summary:
The study was performed according to EU Method A.9, OPPTS 830.6315 and UN Manual Test Methods 32.4 under GLP-conditions.
First, a safety test was performed: approx. 3 mL of the test item was heated with a Bunsen burner up to the temperature of 140.1 °C. The appearance had not changed after cooling down.
Then, a pre-test and a main test with two experiments were performed using a flashpoint tester.
The flash point of the test substance is stated as 26.0 ± 0.5 °C (corresponding to 299.2 ± 0.5K). This value is the mean value of two independent determinations.
Reference
FINDINGS
Pre-Test for Safety
After cooling down ,from a temperature above the boiling point, no signs of decomposition were observed.
Determination of the Flash Point
Search (pre-Test): 26.8 °C
1. Determination: 26.5 °C (the test vessel was cooled down to a temperature of 8.5 °C before test starts)
2. Determination: 25.5 °C (the test vessel was cooled down to a temperature of 5.0 °C before test starts)
EVALUATION AND RESULT
The flash point is given as the mean value of the duplicate determinations. The measured flash point is therefore 26.0 ± 0.5 °C (corresponding to 299.2 ± 0.5 K). Based on this result, the substance is evaluated as a flammable liquid Cat 3 (following the UN Handbook "Recommendations on the Transport of Dangerous Goods - Manual of Tests and Criteria" Rev. 6, 2015).
DISCUSSION
The difference between the two independent measurements was below 2 K. For this reason, the result is considered valid.
Description of key information
The study was performed according to EU Method A.9, OPPTS 830.6315 and UN Manual Test Methods 32.4 under GLP-conditions.
First, a safety test was performed: approx. 3 mL of the test item was heated with a Bunsen burner up to the temperature of 140.1 °C. The appearance had not changed after cooling down.
Then, a pre-test and a main test with two experiments were performed using a flash point tester.
The flash point of the test substance is stated as 26.0 ± 0.5 °C (corresponding to 299.2 ± 0.5K). This value is the mean value of two independent determinations.
Flash point of hexanal was described in several handbooks/puplications. Described properties are nearly the same: hexanal has a flash point of about 32 °C. This fits with the experimental determined value and leads to the same classification.
Key value for chemical safety assessment
- Flash point at 101 325 Pa:
- 26 °C
Additional information
CRC Handbook:
Hexanal has a flash point of 32.0 °C
Sax Dang. Prop.:
Hexanal has a flash point of 32.2 °C.
Lange Phys. const/prop.:
Hexanal has a flash point of 32.2 °C.
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.
