3,5-dihydroxy-2,6,6-tris(3-methylbuten-2-yl)-4-(3-methyl-1-oxobutyl)cyclohexa-2,4-dien-1-one

Explosiveness

Administrative data

Endpoint:

explosiveness, other

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2 to 4 October 2017

Reliability:

1 (reliable without restriction)

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2017

Report date:

2017

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

other:

Version / remarks:

The testing laboratory is GLP compliant and the test was carried out according to the principles of GLP. An internal standard operating procedure was followed for the direct scanning calorimetry tests.

Principles of method if other than guideline:

Date 02/10/2017
SOP Reference CTL SOP 320
Test System DSC System 1
Test Filename DSC4028001957A
Crucible Type Gold-lined steel (high pressure, sealed)
Sample Preparation Tested as received
Start Temperature -40°C
Trip Temperature 400°C
Ramp Rate 4 K.min-1
Test Atmosphere Air
Sample Mass 4.7 mg

GLP compliance:

yes

Test material

Test material information

Constituent 1

Reference substance name:

Not assigned. This is a fraction of a hop extract (CAS 8060-28-4)

IUPAC Name:

Not assigned. This is a fraction of a hop extract (CAS 8060-28-4)

Test material form:

solid

Remarks:

Resinous solid. Becomes flowable above 60 oC.

Specific details on test material used for the study:

Batch number EXP 5

Results and discussion

Small-scale preliminary tests

Key result

Parameter:

other: The material does not fulfil the criteria for explosiveness. The exothermic events observed in the DSC trace have heats of decomposition of less than 360 J per g.

Remarks on result:

other: The material does not fulfil the criteria for explosiveness. The exothermic events observed in the DSC trace have heats of decomposition of less than 360 J per g..

Any other information on results incl. tables

The sample was observed to undergo an exothermic event from 33.1°C which had a heat of decomposition of -68.1 J.g-1. A second exothermic event was then observed to commence from 139.6°C which had a heat of decomposition of -359.5 J.g-1. No further significant energetic events were noted up to 400°C.

The DSC plot is attached - see "Illustration (picture/graph)"

Applicant's summary and conclusion

Interpretation of results:

GHS criteria not met

Conclusions:

The sample was observed to undergo an exothermic event from 33.1°C which had a heat of decomposition of -68.1 J.g-1. A second exothermic event was then observed to commence from 139.6°C which had a heat of decomposition of -359.5 J.g-1. No further significant energetic events were noted up to 400°C.

The exothermic decomposition is less than 500 J per g (Regulation (EC) 1272/2008, Annex I, Part 2, 2.1.4.3 (c)), so the material is not explosive. The flash point of the material is >81 oC.