Registration Dossier
Registration Dossier
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EC number: 293-048-9 | CAS number: 91051-00-2
Explosiveness
Administrative data
Link to relevant study record(s)
- Endpoint:
- explosive properties of explosives
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- other:
Reference
Description of key information
Fatty acids, C8-10, zinc salts is considered to be void of any explosive properties.
Key value for chemical safety assessment
- Explosiveness:
- non explosive
Additional information
According to Regulation (EC) No 1907/2006, the study does not need to be conducted if there are not any chemical groups associated with explosive properties present in the molecule (cf. Regulation (EC) No 1907/2006, Annex VII, Section 7.11, Column 2). According to ECHA Guidance on information requirements and chemical safety assessment Chapter R.7a: Endpoint specific guidance (R.7.1.1.1 - Explosive properties, July 2017), fatty acids, C8-10, zinc salts does not contain functional groups that are directly associated with explosive properties.
However, since oxygen is present in the molecule, the oxygen balance (OB) according to the following chemical reaction and mathematical equation (Lothrop et al) was calculated:
CxHyOz + [x + (y/4)-(z/2)]. O2 → x CO2 + (y/2) H2O
using the formula: OB = -1600 [2x +(y/2) -z] / molecular weight,
where: x = Number of carbon atoms, y = Number of hydrogen atoms, z = Number of oxygen atoms.
In the following, the calculations which are in accordance with the requirements set forth in the ECHA guidance are briefly described. The calculations were performed for Fatty acids, C8-10, zinc salts.
Molecular formula (Fatty acids, C8-10, zinc salts): A (C8H15O2)2Zn: 56.6 % ; B (C10H19O2)2Zn: 43 %
Molecular weight: A 351.78 g/mol B 407.92 g/mol
A) OB= -1600[32+15-4]/ 351.78 = -195.577
B) OB = -1600[40+19-4]/ 407.92 = - 215.729
OB(A) * 56.6 % + OB(B) * 43 % = -203.459
The absence of reactive groups in the structural formula and the oxygen balance being less than –200 indicate that the substance will not decompose violently under formation of gases or release of energy (and thus does not pose a risk for explosivity). Thus, testing does not need to be conducted and a negative result can be predicted.
Fatty acids, C8-10, zinc salts is therefore considered to be void of any explosive properties. Finally, it is noted that despite the long-term use of fatty acids, C8-10, zinc salts, it is not classified for explosive properties according to UN transport regulations and derogation from testing is hereby applied for.
Justification for classification or non-classification
The substance fatty acids, C8 -10, zinc salts is considered to be void of any explosive properties.Therefore, classification is not required for explosiveness according to CLP Regulation (EC) No 1272/2008.
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.
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