rac-(1R,4S,4aR,8R,8aS)-9-(dichloromethylidene)-8-hydroxyoctahydro-1,4-methanonaphthalen-5(1H)-one

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:

20 Jan 2015 to 27 Feb 2015

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

other: UN Test 2(b): “Koenen Test”

Deviations:

no

Qualifier:

according to guideline

Guideline:

other: UN Test 2c: Time/Pressure test

Deviations:

no

GLP compliance:

yes

Key result

Test series:

UN Test series 2

Method:

UN Test 2 (b): Koenen test

Parameter:

limiting diameter (mm)

Result:

negative, no explosion

Remarks on result:

no ignition, explosion, self-heating or visible decomposition

Key result

Test series:

UN Test series 2

Method:

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

Parameter:

other: rise time

Result:

negative, no ability to deflagrate

Remarks on result:

p = 2070 kPa: no

Interpretation of results:

GHS criteria not met

Conclusions:

Koenen Test
- No explosions were observed using the 1 mm orifice plates, i.e. Limiting Diameter < 1 mm.
- In accordance with the criteria of UN Test 2(b), the Limiting Diameter is less than 2 mm and the outcome of the test is considered to be “–” (i.e. negative).
- The test substance shows no violent effect on heating under confinement.

Time / pressure test
- In all three tests, the upper pressure threshold of 2070 kPa was not achieved.
- In accordance with the criteria of UN Test 2(c)(i), the outcome of the test is considered to be “–” (i.e. negative).
- The test substance shows no deflagration when ignited under confinement.

Executive summary:

Test Series 2 from has been carried out in order to establish whether or not the test substance is too insensitive for classification as an explosive. This series comprises the following types of test:

- Type 2(a) – sensitivity to detonative shock

- Type 2(b) – effect of heating under confinement

- Type 2(c) – effect of ignition under confinement

Tests of type 2(a) were rendered unnecessary, as the heat of decomposition is less than 800 J/g.

Both the Koenen test (type 2(b), and the time/pressure test (type 2(c), produced results which were considered to be “–” (i.e. negative). Therefore the overall conclusion from these tests is that the test substance is not classified as an explosive.

Description of key information

Heat of decomposition is less than 800 J/g, test substance is not classified as an explosive, UN test 2(b), Jackson 2015

Key value for chemical safety assessment

Explosiveness:

non explosive

Additional information

Test Series 2 from has been carried out in order to establish whether or not the test substance is too insensitive for classification as an explosive. This series comprises the following types of test:

- Type 2(a) – sensitivity to detonative shock

- Type 2(b) – effect of heating under confinement

- Type 2(c) – effect of ignition under confinement

Tests of type 2(a) were rendered unnecessary, as the heat of decomposition is less than 800 J/g.

Both the Koenen test (type 2(b), and the time/pressure test (type 2(c), produced results which were considered to be “–” (i.e. negative). Therefore the overall conclusion from these tests is that the test substance is not classified as an explosive (Jackson, 2015). The study is considered to be relevant, reliable (Klimisch 1) and adequate for the purposes of risk assessment, classification and labelling.

Justification for classification or non-classification

Based on the available information, the test substance does not need to be classified for explosiveness in accordance with EU Classification, Labelling and Packaging of Substances and Mixtures (CLP) Regulation (EC) No. 1272/2008.