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Administrative data

Endpoint:
explosiveness, other
Remarks:
explosive properties of solids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
May 2017 - December 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2020

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
EU Method A.14 (Explosive properties)
Deviations:
not applicable
Remarks:
The analysis has not yet been performed.
Qualifier:
according to guideline
Guideline:
other: OECD 113
Deviations:
not applicable
Remarks:
The analysis has not yet been performed.
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
C.I. Solvent Red 119
EC Number:
602-676-8
Cas Number:
12237-27-3
Molecular formula:
C32H22N10O8Cr
IUPAC Name:
C.I. Solvent Red 119
impurity 1
Reference substance name:
Unknown impurities
Cas Number:
not available
IUPAC Name:
Unknown impurities
impurity 2
Chemical structure
Reference substance name:
Water
EC Number:
231-791-2
EC Name:
Water
Cas Number:
7732-18-5
Molecular formula:
H2O
IUPAC Name:
water
Test material form:
solid: particulate/powder

Results and discussion

Small-scale preliminary tests
Key result
Parameter:
sensitiveness to friction: friction load (N)
Value:
0
Remarks on result:
not sensitive to friction using a friction load of 360 N
Remarks:
no explosion occured
Results of test series for explosives
Key result
Test series:
other: Thermal sensitivity
Method:
other: Circular nozzle plate
Parameter:
limiting diameter (mm)
Remarks:
2mm
Result:
negative, no explosion
Remarks on result:
other: no explosion was shown

Applicant's summary and conclusion

Interpretation of results:
GHS criteria not met
Conclusions:
The test item had no explosive properties in the sense of the European Commission Regulation (EC) No. 440/2008, Method A.14.
Executive summary:

Individual results

1.1.1    Thermal stability

A DSC-measurement in a closed glass crucible showed an exothermal effect in the temperature range of 215 – 400 °C with an energy release of 565 J/g. The measurement was terminated at 500 °C.

Graphical presentation of the DSC run is given on page8(Figure1).The results are summarised inTable 1.

Table1: Thermal stability (DSC measurement)

Ident-No.

Weight / mg

Final temperature / °C

Temperature range / °C

Type of effect

Energy

/ J/g

36670

10.54

500

215 – 400

Exothermal

565

1.1.2    Explosive properties

The heat of decomposition was above 500 J/g. Therefore the main test on explosive properties had to be performed.

Mechanical sensitivity (friction):

The test item did not contain particles > 500 µm (see study No. PS20170415-2). Therefore sieving was not necessary. No explosion occurred within 6 tests using a pinload of 360 N.

Mechanical sensitivity (shock):

The test item did not contain particles > 500 µm (see study No. PS20170415-2). Therefore sieving was not necessary. No explosion within 6 tests using a mass of 10 kg falling from a height of 0.4 m was observed.

Thermal sensitivity:

Three tests were performed with a circular nozzle plate with a hole of 2 mm diameter. No explosion was observed.Table 2gives the results of the thermal sensitivity.

Table2: Thermal sensitivity

Test

no.

Weight of

test item

(g)

Nozzle

width

(mm)

t1

(s)

t2

(s)

Reaction

Appearance;

Number of

fragments

1

9.46

2.0

22

> 300

Flame

O

2

9.45

2.0

20

> 300

Flame

O

2

9.44

2.0

21

> 300

Flame

O

t1:time to any reaction, e.g. whistle or flame

t2:time to main reaction, e.g. rupture of tube or flashing

O: tube unchanged

The test on thermal sensitivity carried out with a nozzle with a diameter of 2.0 mm showed no explosion. Compared to the nozzle with a diameter of 6.0 mm the venting area of the nozzle with 2.0 mm is smaller by an order of magnitude. Additionally the physical state of the test item excludes the enrichment of high-energy components caused by evaporation of volatile solvents. Due to these facts an explosion with a nozzle width of 6.0 mm was excluded.

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