dec-1-en-4-yne

Explosiveness

Link to relevant study record(s)

Reference

Endpoint:

explosive properties of explosives

Type of information:

experimental study

Adequacy of study:

key study

Study period:

11-08-2020 to 10-09-2020

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Well documented guideline study performed, non-GLP. All relevant validity criteria were met. Testing conducted according to international transport and supply/use regulations and manual and criteria.

Qualifier:

according to guideline

Guideline:

UN Manual of Tests and Criteria: Part I: Classification procedures, test methods and criteria relating to explosives of Class 1

Version / remarks:

UN MTC Test Series and associated tests as below:
Test Series 2
(i) Gap test : UN Test 2 (a)
(ii) Koenen tube test : UN Test 2 (b)
(iii) Time / pressure test : UN Test 2 (c)(i)

Deviations:

no

GLP compliance:

no

Remarks:

Well documented guideline study performed, non-GLP. All relevant validity criteria were met. Testing conducted according to international transport and supply/use regulations and manual and criteria.

Key result

Test series:

UN Test series 2

Method:

UN Test 2 (a): UN gap test

Parameter:

fragmented length (cm)

Value:

0

Result:

negative, not sensitive to detonative shock

Remarks:

negative, no propagation of detonation ; (n=2 tubes) ; one tube was cracked but not completely fragmented ; result considered too insensitive to propagate detonation

Key result

Test series:

UN Test series 2

Method:

UN Test 2 (b): Koenen test

Parameter:

limiting diameter (mm)

Value:

1

Result:

negative, no violent effect on heating under confinement

Remarks:

(n=3 tubes) ; Fragmentation type: 'O': Tube unchanged ; Limiting diameter: < 1 mm

Test series:

UN Test series 2

Method:

UN Test 2 (c) (i): Time/pressure test

Parameter:

other: time for a pressure rise (ms)

Result:

negative, no or slow deflagration

Remarks:

time for a pressure rise from 690 to 2070 kPa : could not be determined (ms)

Remarks on result:

p < 2070 kPa

Table1.0 : Test Results for the test item

Test Name	Test Number	Test Result	Comments
UN Gap test	UN 2 (a)	Negative	The tube remained intact during test one ; in test two the tube was observed to be cracked but not completely fragmented. No holes were punched through the witness plate. Result: Negative ; too insensitive to propagate detonation
Koenen Tube test	UN 2 (b)	Negative	The sample has been shown to have a limiting diameter of < 1 mm (negative) Type: ‘O’ Tube unchanged A jet flame was observed during the measurement Result: Negative ; no violent effect on heating under confinement
Time / Pressure test	UN 2 (c)(i)	Negative	The shortest time for a pressure rise from 690 to 2070 kPa was considered to be – ms i.e. no pressure rise > 2070 kPa was reached Result: Negative ; no or slow deflagration

 

Interpretation of results:

GHS criteria not met

Remarks:

EU & GHS criteria utilised in assessment

Conclusions:

Test Item: EU Criteria and/or UN GHS Transport Classification : does not meet GHS Criteria for Transport of Dangerous Goods - Explosive Class 1

Executive summary:

The potential explosivity of the test item was assessed in accordance with the UN Transport of Dangerous Goods: Manual of Tests and Criteria (2015) using Test Series 2. The selection of testing was made by expert judgement and in accordance of the results observed in preceding tests. The test item was negative in the UN Test Series 2(a) UN Gap Test for sensitivity to propagate detonation, negative in UN Test 2 (b) Koenen tube test: for heating under confinement, and negative in UN Test 2 (c)(i)Time / Pressure test for sensitivity to yield rapid explosive deflagration. All test results were negative, and on this basis, no further testing was therefore conducted. The substance exits consideration for acceptance into UN Class 1, as the substance is deemed too insensitive for classification and labelling. Other tests were omitted based on the results of previous tests and/or expert judgement in line with the UN MTC (2015).

 

References:

1. REACH Regulation (EC) 1907/2006, Annex VII, section 7.11

2. CLP Regulation (EC) 1272/2008, Annex I, section 1 and 2

3. UN Transport of Dangerous Goods Manual of Tests and Criteria, Sixth Edition (2015)

4. ECHA Guidance on Application on the CLP Criteria, section 2.1 (v5.0, July 2017)

Description of key information

Explosiveness: non-explosive; based on negative results in the following: Gap test : UN Test 2 (a), Koenen tube test : UN Test 2 (b), Time / pressure test: UN Test 2 (c)(i), UN MTC (2015), 2020

Key value for chemical safety assessment

Explosiveness:

non explosive

Additional information

Key study : UN Manual of Tests and Criteria (2015), 2020 : The potential explosivity of the test item was assessed in accordance with the UN Transport of Dangerous Goods: Manual of Tests and Criteria (2015) using Test Series 2. The selection of testing was made by expert judgement and in accordance of the results observed in preceding tests. The test item was negative in the UN Test Series 2(a) UN Gap Test for sensitivity to propagate detonation, negative in UN Test 2 (b) Koenen tube test: for heating under confinement, and negative in UN Test 2 (c)(i) Time / Pressure test for sensitivity to yield rapid explosive deflagration. All test results were negative, and on this basis, no further testing was therefore conducted. The substance exits consideration for acceptance into UN Class 1, as the substance is deemed too insensitive for classification and labelling. Other tests were omitted based on the results of previous tests and/or expert judgement in line with the UN MTC (2015).

 

Table 1.0 : Test Results for the test item

Test Name	Test Number	Test Result	Comments
UN Gap test	UN 2 (a)	Negative	The tube remained intact during test one ; in test two the tube was observed to be cracked but not completely fragmented. No holes were punched through the witness plate. Result: Negative ; too insensitive to propagate detonation
Koenen Tube test	UN 2 (b)	Negative	The sample has been shown to have a limiting diameter of < 1 mm (negative) Type: ‘O’ Tube unchanged A jet flame was observed during the measurement Result: Negative ; no violent effect on heating under confinement
Time / Pressure test	UN 2 (c)(i)	Negative	The shortest time for a pressure rise from 690 to 2070 kPa was considered to be – ms i.e. no pressure rise > 2070 kPa was reached Result: Negative ; no or slow deflagration

 

References:

1. REACH Regulation (EC) 1907/2006, Annex VII, section 7.11

2. CLP Regulation (EC) 1272/2008, Annex I, section 1 and 2

3. UN Transport of Dangerous Goods Manual of Tests and Criteria, Sixth Edition (2015)

4. ECHA Guidance on Application on the CLP Criteria, section 2.1 (v5.0, July 2017)

Justification for classification or non-classification

The substance does not meet classification criteria under Regulation (EC) 1272/2008 for explosivity.