Paraquat-dichloride

Flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

05 Jun 2018 to 11 Jun 2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

UN Manual of Tests and Criteria: Test N.1 (Test method for readily combustible solids)

GLP compliance:

yes

Key result

Test procedure:

burning rate test: preliminary screening test

Remarks on result:

substance does not ignite and propagate combustion either by burning with flame or smouldering along 200 mm of the powder train within the 2 minutes test period

Interpretation of results:

GHS criteria not met

Conclusions:

The test substance did not propagate combustion.

Executive summary:

The Flammability of the test item was determined in accordance with UN Test N.1 and in compliance with GLP. The test substance ignited but rapidly self-extinguished on removal of the ignition source. It did not propagate combustion and the burning time over 200mm could not be determined.

Reference 2

Endpoint:

self-heating substances / mixtures

Type of information:

experimental study

Adequacy of study:

key study

Study period:

05 Jun 2018 to 11 Jun 2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

UN Manual of Tests and Criteria: Test N.4 (Test method for self-heating substances)

GLP compliance:

yes

Key result

Test procedure:

other: 50 mm sample cube at 165 °C

Result:

negative outcome (no effect observed)

The 50 mm container at 165 °C is equivalent to a 100 mm container at 140 °C.

The test substance showed no exothermic activity, with the temperature of the sample reaching a maximum of 165.7 °C during the course of the test. As this constituted a negative result, no further testing was necessary.

Interpretation of results:

GHS criteria not met

Conclusions:

The test substance does not display any signs of exothermic activity when tested in the 50 mm cubic wire mesh container at 165 °C (equivalent to a 100 mm container at 140 °C).

Executive summary:

The Auto flammability of the test item was determined in accordance with UN Test N.4 and in compliance with GLP. The test substance did not show exothermic activity, with the temperature of the sample reaching a maximum of 165.7 °C during the course of the test. As this constitutes a negative result, no further testing was necessary.

Description of key information

No combustion, U.N Test N.1, Jackson 2018

No exothermic activity, U.N. Test N.4. Jackson 2018

Key value for chemical safety assessment

Flammability:

not classified

Additional information

The flammability of the test item was determined in accordance with UN Test N.1 and in compliance with GLP. The test substance ignited but rapidly self-extinguished on removal of the ignition source. It did not propagate combustion and the burning time over 200mm could not be determined.

The auto flammability of the test item was determined in accordance with UN Test N.4 and in compliance with GLP. The test substance did not show exothermic activity, with the temperature of the sample reaching a maximum of 165.7 °C during the course of the test. As this constitutes a negative result, no further testing was necessary.

Justification for classification or non-classification

Based on the available information, the test substance is not classified as flammable solid, self heating substance, pyrophoric solid or substance which in contact with water emits flammable gases in accordance with EU Classification, Labelling and Packaging of Substances and Mixtures (CLP) Regulation No. (EC) 1272/2008.