Pirimiphos-methyl

Explosiveness

Link to relevant study record(s)

Reference

Reference 1

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

the study does not need to be conducted because the substance is an organic substance or mixture containing chemical groups associated with explosive properties, but the exothermic decomposition energy is less than 500 J/g and the onset of exothermic decomposition is below 500°C

Justification for type of information:

The test substance does not contain any bond groupings known to confer explosive properties. The exothermic heat of decomposition measured by DSC (Husband, 1998) was approximately 200 J g/L (< 500 J/g), which supports the structure assessment. Therefore, explosive properties are not foreseen.

Reference 2

Endpoint:

explosive properties of explosives

Type of information:

experimental study

Adequacy of study:

supporting study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.14 (Explosive properties)

GLP compliance:

yes

Method:

other: differential scanning calorimetry

Parameter:

other: exothermic heat of decomposition (J/g)

Value:

200

Result:

other: Not thermally sensitive

Remarks on result:

other: The exothermic heat of decomposition was about 200 J/g.

The technical test substance is not expected to be an explosive. It does not contain any bond groupings known to confer explosive properties. The exothermic heat of decomposition measured by DSC was approximately 200 J per g (equivalent to 50 Cal per g) which supports the structure assessment.

Interpretation of results:

GHS criteria not met

Conclusions:

The test substance does not have explosive properties.

Executive summary:

In accordance with EU Method A.14 and in compliance with GLP the test substance gave negative results in tests for determining thermal sensitivity. It was concluded that the test substance does not have explosive properties.

Description of key information

The study does not need to be conducted as there are no chemical groups present in the molecule which are associated with explosive properties. This was supported by a study that showed that the heat of decomposition of the test substance measured by DSC was approximately 200 J/g, which is less than the cut-off for explosive properties of 500 J/g (Husband 1998).

Key value for chemical safety assessment

Explosiveness:

non explosive

Justification for classification or non-classification

Based on the available information, classification on explosiveness is not warranted in accordance with EU Classification, Labelling and Packaging of Substances and Mixtures (CLP) Regulation No. (EC) 1272/2008.