Thermal cracking oil from blends of rubber, fuel oils and paraffin waxes, steam distillation concentrate

Explosiveness

Link to relevant study record(s)

Reference

Endpoint:

explosiveness, other

Type of information:

other: Expert assessment

Adequacy of study:

key study

Study period:

26 July 2019

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: This assessment is based on an examination of the functionality within the substance Thermal cracking oil from blends of rubber, fuel oils and paraffin waxes, steam distillation condensate

Qualifier:

no guideline followed

Principles of method if other than guideline:

An evaluation was undertaken to determine the explosiveness of Thermal cracking oil from blends of rubber, fuel oils and paraffin waxes, steam distillation condensate. Structural assessment of Thermal cracking oil from blends of rubber, fuel oils and paraffin waxes, steam distillation condensate and its minor constituents was achieved in accordance with relevant regulation, namely the Classification,Labelling, and Packaging (CLP) Regulation (EC) No 1272/2008, Annex VII of the REACH regulation ((EC) No 1907/2006), section 7.11 and information outlined in Table A6.1 of Appendix 6, UN Recommendations on the Transport of Dangerous Goods: Manual of Tests and Criteria.

GLP compliance:

no

Key result

Test series:

other: Not relevant

Method:

other: Expert assessment

Parameter:

other: Explosiveness

Result:

result is considered "-" (negative)

Remarks on result:

other: Thermal cracking oil from blends of rubber, fuel oils and paraffin waxes, steam distillation condensate is not expected to possess explosive properties

Assessment of Thermal cracking oil from blends of rubber, fuel oils and paraffin waxes, steam distillation condensate for functionality typically associated with explosive properties:

Functional Group	Conclusions
C-C unsaturation	Present
C-metal, N-metal	Not present
Contiguous nitrogen atoms	Not present
Contiguous oxygen atoms	Not present
N-O	Not present
N-halogen	Not present
O-halogen	Not present

Interpretation of results:

GHS criteria not met

Conclusions:

In accordance with the assessment for Thermal cracking oil from blends of rubber, fuel oils and paraffin waxes, steam distillation condensate, the substance is not expected to exhibit explosive behaviour due to a lack of structural features associated with explosiveness. Classification as an explosive material is not required (CLP Regulation (EC) No 1272/2008).

Executive summary:

An evaluation of the molecular structure of Thermal cracking oil from blends of rubber, fuel oils andparaffin waxes, steam distillation condensate and its minor constituents was undertaken to establish if the substance contained explosive properties. In order to establish a screening-style procedure Annex VII of the REACH regulation ((EC) No 1907/2006), CLP Regulation (EC) No 1272/2008 and the UN Recommendations on the Transport of Dangerous Goods: Manual of Tests and Criteria, 6th Ed. (Appendix 6) were referred to which outline structural groups typical of organic and inorganic material known to give rise to explosive behaviour. The identification of functional groups in Thermal cracking oil from blends of rubber, fuel oils and paraffin waxes, steam distillation condensate that are associated with explosiveness, such as C-C unsaturation (acetylenes, acetylides, 1,2-dienes), C-metal and N-metal (Grignard reagents, organo-lithium compounds), contiguous N atoms (azides, aliphatic azo compounds, diazonium salts, hydrazines), Contiguous O atoms (peroxides, ozonides), N-O ( (hydroxylamines, nitrates, nitro compounds, nitroso compounds, N-oxides) N-Halogen (chloramines, fluoroamines) and O-Halogen (chlorates, perchlorates) will reliably signal explosive potential. The raw materials used to manufactureThermal cracking oil from blends of rubber, fuel oils andparaffin waxes, steam distillation condensate do not contain any halogens or metals and these elements are not present in the final product. Nitrogen is contained in some of the substrates used as feedstock in the manufacturing process, as well as in benzonitrile, a minor constituent identified in the substance. Nonetheless, chemical groups incorporating nitrogen are not classed as groups associated with explosive properties in accordance with section 2.1.4.3 of the CLP regulation. Oxygen is contained within Thermal cracking oil from blends of rubber, fuel oils andparaffin waxes, steam distillation condensate however, the oxygen atoms are not present within chemical groups considered to be associated with explosive properties. C-C unsaturation is present in Thermal cracking oil from blends of rubber, fuel oils andparaffin waxes, steam distillation condensate(predominantly represented by olefins and aromatic hydrocarbons), but these functional groups are not considered to confer explosive properties. As a consequence of this assessment, it can be concluded that Thermal cracking oil from blends of rubber, fuel oils andparaffin waxes, steam distillation condensateand its minor constituents are not expected to possess explosive potential and, therefore, the substance does not warrant a classification for explosive properties in accordance with CLP Regulation (EC) No 1272/2008). 

Description of key information

Owing to the lack of identified features associated with the explosive behaviour of a substance, it has been concluded that Thermal cracking oil from blends of rubber, fuel oils andparaffin waxes, steam distillation condensate is not expected to exhibit explosiveness. Classification under CLP Regulation (EC) No 1272/2008 as an explosive material is not required.

Key value for chemical safety assessment

Explosiveness:

non explosive

Additional information

A Klimisch score of 2 (reliable with restrictions) has been assigned to the key value obtained for explosiveness given that the endpoint conclusion was derived as part of an expert assessment. Pertinent regulation and published documentation were followed as part of a screening procedure.