6,6'-di-tert-butyl-2,2'-methylenedi-p-cresol

Explosiveness

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

explosive properties of explosives

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2008

Reliability:

1 (reliable without restriction)

Reason / purpose for cross-reference:

reference to same study

Reason / purpose for cross-reference:

reference to other study

Qualifier:

according to guideline

Guideline:

other: DIN EN 14034

Principles of method if other than guideline:

The method DIN EN 14034 is used for the determination of the dust explosion limits.

GLP compliance:

not specified

Parameter:

other: More sensitive to shock than m-dinitrobenzene

Remarks on result:

other: no data

Parameter:

other: More sensitive to friction than m-dinitrobenzene

Remarks on result:

other: no data

Parameter:

other: Explosive under influence of flame

Remarks on result:

other: no data

Parameter:

other: Explosive (not specified)

Remarks on result:

negative (not further specified)

Remarks:

only the dust of Vulkanox is explosive

The test on dust explosion of Vulkanox delivered the following result: The lower dust explosion limit for this substance is determined to be 10 g/m³, the ignition temperature for the dust is 330 °C, the explosion pressure maximum pmax is 9.2 bar.

Conclusions:

The lower dust explosion limit of Vulkanox is determined to be 10 g/m³ according to test method DIN EN 14034.

Executive summary:

The lower dust explosion limit of Vulkanox is determined to be 10 g/m³ according to test method DIN EN 14034. The dust explosion test gives evidence that only the dust of Vulkanox has explosive potential und specific conditions - i. e. vapourised dust in a closed system with an ignition source - but not the solid substance itself under normal conditions.

Reference 2

Endpoint:

explosive properties of explosives

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because there are no chemical groups present in the molecule which are associated with explosive properties

Description of key information

Waiving of study:
Two studies - one carried out by Currenta (Klein, Blank, 2008) and one at BIA (1993) - on the dust explosion of DBMC show that only the dust of this substance has explosive properties, whereas the solid form, which is the commercial form, has no such properties. Thus, DBMC is not regarded as explosive which is in accordance with the molecular structure of this substance which does not possess any chemical group associated with explosive properties.

Key value for chemical safety assessment

Explosiveness:

non explosive

Justification for classification or non-classification

Based on the structure of the molecule and taking into account the provisions laid down in Council Directive 67/548/EEC and Guidance to Regulation (EC) No 1272/2008, DBMC does not have to be classified with respect to explosive properties.