Registration Dossier
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EC number: 214-170-0 | CAS number: 1107-00-2
Explosiveness
Administrative data
Link to relevant study record(s)
- Endpoint:
- explosive properties of explosives
- Type of information:
- other: Expert Assessment
- Adequacy of study:
- weight of evidence
- Study period:
- 16 September 2021
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: An assessment was performed to establish the explosive behaviour of 4,4'-[2,2,2-trifluoro-1- (trifluoromethyl)ethylidene]diphthalic anhydride (6FDA) through examination of its molecular structure and functionality.
- Qualifier:
- no guideline required
- Principles of method if other than guideline:
- An assessment was performed based on an examination of molecular structure and functionality of 4,4'-[2,2,2-trifluoro-1- (trifluoromethyl)ethylidene]diphthalic anhydride.
- GLP compliance:
- no
- Key result
- Parameter:
- other: Not Applicable.
- Remarks on result:
- other: Based on the expert assessment, 4,4'-[2,2,2-trifluoro-1- (trifluoromethyl)ethylidene]diphthalic anhydride is not expected to possess explosive properties.
- Annex VII of the REACH regulation ((EC) No 1907/2006), section 7.11, which states that a study of the explosive properties of a substance need not be conducted if ‘there are no chemical groups associated with explosive properties present in the molecule’.
- Section 2.1.4.3 of the CLP regulation covering explosive properties states that a substance or mixture shall not be classified as explosive if:
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- 4,4'-[2,2,2-trifluoro-1- (trifluoromethyl)ethylidene]diphthalic anhydride is not expected to possess explosive properties based on examination of its molecular structure and functionality.
- Executive summary:
4,4'-[2,2,2-trifluoro-1- (trifluoromethyl)ethylidene]diphthalic anhydride (-FDA) has been assessed for explosive properties. The assessment is based on an examination of the functionality within the substance.
It is concluded that 4,4'-[2,2,2-trifluoro-1- (trifluoromethyl)ethylidene]diphthalic anhydride does not have explosive properties and does not require classification for explosive properties.
Reference
Introduction
4,4'-[2,2,2-trifluoro-1- (trifluoromethyl)ethylidene]diphthalic anhydride (6FDA) has been assessed for explosive properties. The assessment is based on an examination of the functionality within the substance.
Assessment: Explosive properties
According to the CLP Regulation (EC) No 1272/2008, Section 2.1.1.2., an explosive substance or mixture is a solid or liquid substance or mixture of substances which is in itself capable by chemical reaction of producing gas at such a temperature and pressure and at such a speed as to cause damage to the surroundings.
A screening procedure has been used to assess the explosive properties of 6FDA. This has taken into consideration the following:
a. There are no chemical groups associated with explosive properties present in the molecule. Example of groups which may indicate explosive properties are given in Table A6.1 in Appendix 6 of the UN Recommendations on the Transport of Dangerous Goods, Manual of Test and Criteria; or
b. The substance contains chemical groups associated with explosive properties which include oxygen and the calculated oxygen balance is less than – 200.
c. When the organic substance or a homogeneous mixture of organic substances contains chemical groups associated with explosive properties but the exothermic decomposition energy is less than 500 J/g and the onset of exothermic decomposition is below 500° The exothermic decomposition energy can be determined using a suitable calorimetric technique.
d. For mixtures of inorganic oxidising substances with organic material(s), the concentration of the inorganic oxidising substance is:
i. Less than 15 % by mass, if the oxidising substance is assigned to Categories 1 or 2.
ii. Less than 30 % by mass, if the oxidising substance is assigned to Category 3.
An evaluation of the functionality within the substance has been performed to identify the presence of elements commonly associated with explosive properties as described in Table A6.1 in Appendix 6 of the UN Recommendations on the Transport of Dangerous Goods, Manual of Test and Criteria.
Functional Group (examples) | Comments/Conclusions |
C-C unsaturation (acetylenes, acetylides, 1,2-dienes) | Not Present |
C-Metal and N-Metal (Grignard reagents, organo-lithium compounds) | Not present |
Contiguous N atoms (azides, aliphatic azo compounds, diazonium salts, hydrazines | Not present |
Contiguous O atoms (peroxides, ozonides) | Not present |
N-O (hydroxylamines, nitrates, nitro compounds, nitroso compounds, N-oxides) | Not present |
N-Halogen (chloramines, fluoroamines) | Not present |
O-Halogen (chlorates, perchlorates) | Not present |
The raw material used to manufacture the substance do not contain any nitrogen or metals, and these elements are not present in the final product. Oxygen and fluorine are contained within 6FDA, however they are not contained within a chemical group considered to be associated with explosive properties, as stated in section 2.1.4.3 of the CLP regulation.
Conclusion: It is concluded that 4,4'-[2,2,2-trifluoro-1- (trifluoromethyl)ethylidene]diphthalic anhydride does not have explosive properties and does not require classification for explosive properties.
Description of key information
4,4'-[2,2,2-trifluoro-1- (trifluoromethyl)ethylidene]diphthalic anhydride (6FDA) has been assessed for explosive properties. The assessment is based on an examination of the functionality within the substance.
It is concluded that 4,4'-[2,2,2-trifluoro-1- (trifluoromethyl)ethylidene]diphthalic anhydride does not have explosive properties and does not require classification for explosive properties.
Key value for chemical safety assessment
- Explosiveness:
- non explosive
Additional information
Justification for classification or non-classification
4,4'-[2,2,2-trifluoro-1- (trifluoromethyl)ethylidene]diphthalic anhydride (6FDA) has been assessed for explosive properties. The assessment is based on an examination of the functionality within the substance.
It is concluded that 4,4'-[2,2,2-trifluoro-1- (trifluoromethyl)ethylidene]diphthalic anhydride does not have explosive properties and does not require classification for explosive properties.
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