2,2-di(tetrahydrofuryl)propane

Explosiveness

Link to relevant study record(s)

Reference

Endpoint:

explosiveness

Type of information:

other: Statement

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: The EU method was followed. Based on the molecular structure a statement rather than a full study was considered sufficient to cover this endpoint.

Qualifier:

according to guideline

Guideline:

EU Method A.14 (Explosive properties)

Deviations:

not applicable

GLP compliance:

yes (incl. QA statement)

Key result

Parameter:

other: Explosive under influence of flame

Remarks on result:

not measured/tested

Key result

Parameter:

other: More sensitive to shock than m-dinitrobenzene

Remarks on result:

not measured/tested

Key result

Parameter:

other: More sensitive to friction than m-dinitrobenzene

Remarks on result:

not measured/tested

Key result

Parameter:

other: Explosive (not specified)

Remarks on result:

negative (not further specified)

Molecular structure

The molecular structure of the test substance does not contain any chemically instable or highly energetic groups that might lead to an explosion. The impurities, present for =<0.3% in the test substance, were not taken into account but it is not to be expected that these have any influence.

 

Oxygen balance

The oxygen balance of a compound is the difference between the oxygen content of the compound and that required to fully oxidize the carbon, hydrogen and other oxidisable elements to carbon dioxide, water, etc. Nitrogen is not considered oxidisable and is usually liberated as the gaseous element during explosive decomposition.

 

The oxygen balance is calculated for the chemical reaction:

 

CcHhOo + [c + (h/4) – (o/2)] O₂→c CO₂+ (h/2) H₂O

 

where c, h and o are the amounts of carbon, hydrogen and oxygen atoms respectively.

Oxygen balance (%) = -1600 x [2 x c + (h/2) – o] / molecular weight

 

If there is a deficiency of oxygen, the balance is negative, while an excess of oxygen gives a positive balance. Compounds with a positive balance can act as oxidants and are often explosive in nature. However, there are known explosives with an oxygen balance of –64%. Compounds with an oxygen balance which is more negative than –200% are not considered to pose an explosive risk.

 

UsingC₁₁H₂₀O₂as molecular formula and 184.28 g/mol as molecular weight, theoxygen balance for the test substance was calculated to be –260 %. This value is outside the region where there may be a potential for explodability.

Interpretation of results:

other: non explosive

Conclusions:

Ditetrahydrofurylpropane is not explosive.

Executive summary:

In a GLP expert statement it was concluded that the substance has no explosive properties because it lacks structural alerts and the calculated oxygen balance was < -200%. In accordance with Column 2 of REACH Annex VII, the explosive properties study (required in 7.11) was not performed.

Description of key information

Statement for explosive properties based on evaluation of structural features of Ditetrahydrofurylpropane and oxygen balance. Evaluation according to EC A.14

Key value for chemical safety assessment

Explosiveness:

non explosive