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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 202-620-9 | CAS number: 97-94-9
Explosiveness
Administrative data
Link to relevant study record(s)
- Endpoint:
- explosive properties of explosives
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Tested according to official UN-method and EU test method A.14
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.14 (Explosive properties)
- Deviations:
- yes
- Remarks:
- Three Koenen tests at 6 and at 2 mm should be carried out. However, since a Modified Trauzl test was performed first and was NO, three Koenen tests at 1 mm were carried out as a worst case. This does not reduce the reliability of the final conclusion.
- Qualifier:
- according to guideline
- Guideline:
- other: UN Recommendations on the Transport of Dangerous Goods, Manual Tests and Criteria, Third revised edition.
- Deviations:
- not specified
- GLP compliance:
- no
- Other quality assurance:
- other: ISO 9001
- Specific details on test material used for the study:
- Special handling is required for the pyrophoric TEB.
Samples for the tests were prepared in the glovebox in an inert nitrogen atmosphere. The samples for the Impact and Koenen tests were transferred in PE-bags, the bags were
closed and transferred to the apparatus. The time in between sample preparation and testing was as short as possible. - Key result
- Parameter:
- sensitiveness to impact: impact energy (J)
- Remarks on result:
- not sensitive to impact using an impact energy of 40 J
- Key result
- Parameter:
- thermal sensitivity - Koenen test: limiting diameter (mm)
- Remarks on result:
- not thermal sensitive if heated under defined confinement
- Key result
- Parameter:
- other: Modified Trauzl
- Remarks on result:
- negative (not further specified)
- Interpretation of results:
- GHS criteria not met
- Remarks:
- non-explosive
- Conclusions:
- Results on the explosive properties of TEB are:
- Impact: : No explosion observed
- Koenen steel tube: : No explosion observed with 1 mm vent: fragmentation type “O”
- Modified Trauzl: : No
Based on these test results, it is concluded that TEB will be classified as a product with no explosive properties. - Executive summary:
Based on these test results, it is concluded that TEB will be classified as a product with no explosive properties.
Reference
DSC
DSC scans are performed on two samples of TEB. Scan attached.
Sample cup: Stainless steel Seiko; closed
Start temperature: 25 oC
Scanning rate: 2 oC/min
End temperature: 490 oC
Intakes: 14.29 mg and 12.61 mg
Impact sensitivity tests
Six tests were carried out at 40 J. No explosion, that means neither flames nor reports, were observed. The tests were carried out with a 10 kg hammer at a distance of 0.4 meter. Result impact sensitivity test: Low (negative reaction at 40J)
Koenen tests (SHV test)
Koenen tests were carried out with orifices of 1 mm (in triplo). No explosions, even no deformations, of the tubes were observed. Time from start heating to the first venting, measured in the test with 1 mm vent, is approximately 15 s, the duration of the venting is 20 s. A green flame was observed during the test, this is typical for TEB. No deformation of the tube means that the maximum pressure during heating TEB in the tube was far below the bursting pressure of the tube.
Test results of the Koenen test
| Orifice (mm) | Intake (g) | Result (pos/neg) | Type of fragmentation | t1 time (s) | t2 time (s) |
| 1 | 18.5 | Neg. | O | 15 | 21 |
| 1 | 18.5 | Neg. | O | 15 | 20 |
| 1 | 18.5 | Neg. | O | 13 | 20 |
Result “O” in the column of “Type of fragmentation” means that no deformation of the tube was observed. This is according to the definition of the UN (Ref. 5.1)
The definition of the test result according to the EU directive is “no explosion”. Time t1 in the next column is the time from starting the burners till the first visual effect. Time t2 is the duration of the venting effect. The effect of the Koenen test: No explosion.
Modified Trauzl test
Modified Trauzl tests on TEB were carried out according to the UN.
Three tests have to be carried out, with 6 gram of TEB.
The mean net expansion of the lead blocks was 1.04 mL
This is classified as a Result “No”.
Description of key information
The product has no explosive properties.
Key value for chemical safety assessment
- Explosiveness:
- non explosive
Additional information
Justification for classification or non-classification
See:97-94-9, Explosiveness, Post, 2017, KS
Fair report, tested according to official UN-method and EUtest method A.14
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.
