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Reference
Endpoint:
explosive properties of explosives
Type of information:
other: Expert assessment
Adequacy of study:
key study
Study period:
10 October 2017
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: The assessment is based on an examination of the functionality within the substance.
Qualifier:
no guideline required
Principles of method if other than guideline:
The assessment is based on an examination of the functionality within the substance.
GLP compliance:
no
Parameter:
other: not applicable
Remarks on result:
other: see 'other information on results'
Test series:
other: not applicable
Method:
other: The assessment is based on an examination of the functionality within the substance.
Parameter:
other: molecular structure
Result:
other: It is concluded that Decyltrimethoxysilane does not have explosive properties and does not require classification for explosive properties.
Remarks on result:
other: see 'other information on results'

A screening procedure has been used to assess the explosive properties of Decyltrimethoxysilane.

This has taken into consideration the following:

1. 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’.

2. 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:

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°C. 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, Noxides)

Not present

N-Halogen (chloramines, fluoroamines)

Not present

O-Halogen (chlorates, perchlorates)

Not present

 

The likely raw materials used to manufacture the substance do not contain any halogens or nitrogen. An organoplatinium catalyst is likely to be used in the manufacture of Decyltrimethoxysilane however, no evidence of the catalyst was found during the characterisation of the substance. Oxygen is contained within Decyltrimethoxysilane, however it is 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. 

Interpretation of results:
GHS criteria not met
Conclusions:
Decyltrimethoxysilane does not have explosive properties and does not require classification for explosive properties.
Executive summary:

Decyltrimethoxysilane has been assessed for explosive properties. The assessment is based on an examination of the functionality within the substance. It was concluded that Decyltrimethoxysilane does not have explosive properties and does not require classification for explosive properties.

Description of key information

Decyltrimethoxysilane has been assessed for explosive properties. The assessment is based on an examination of the functionality within the substance. It was concluded that Decyltrimethoxysilane 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

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