4-hydroxycoumarin

Flammability

Link to relevant study record(s)

Reference

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Experimental starting date - 02 November 2020; Experimental completion date - 20 November 2020

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.10 (Flammability (Solids))

Deviations:

no

GLP compliance:

yes

Specific details on test material used for the study:

Identification: 4-Hydroxycoumarin
CAS Number: 1076-38-6
Appearance/Physical State: Beige powder
Batch Number: HCN20002
Purity: 100.3 % w/w
Expiry Date: 26 September 2022
Storage Conditions: Room temperature, in the dark

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 item has been determined to be not highly flammable in the preliminary screening test.

Executive summary:

The determination was carried out by measuring the burning rate of test item prepared as a pile of set dimensions, using a procedure designed to be compatible with Method A.10 Flammability (Solids) of Commission Regulation (EC) No 440/2008 of 30 May 2008.

Preliminary Screening

A mould (250 mm long x 20 mm wide x 10 mm high) was loosely filled with test item. A non-combustible, non-porous board was placed onto the mould which was then inverted. The mould was removed and an air-rich Bunsen burner flame applied to one end of the pile until ignition occurred.

The test item melted and ignited with a small orange flame which self-extinguished 2 seconds after the Bunsen flame was removed without propagating combustion. The result of the preliminary screening test obviated the need to perform the main test.

The test item has been determined to be not highly flammable as it failed to support combustion in the preliminary screening test.

Description of key information

The test item has been determined to be not highly flammable.

Key value for chemical safety assessment

Flammability:

not classified

Additional information

The determination was carried out by measuring the burning rate of test item prepared as a pile of set dimensions, using a procedure designed to be compatible with Method A.10 Flammability (Solids) of Commission Regulation (EC) No 440/2008 of 30 May 2008.

Preliminary Screening

A mould (250 mm long x 20 mm wide x 10 mm high) was loosely filled with test item. A non-combustible, non-porous board was placed onto the mould which was then inverted. The mould was removed and an air-rich Bunsen burner flame applied to one end of the pile until ignition occurred.

The test item melted and ignited with a small orange flame which self-extinguished 2 seconds after the Bunsen flame was removed without propagating combustion. The result of the preliminary screening test obviated the need to perform the main test.

The test item has been determined to be not highly flammable as it failed to support combustion in the preliminary screening test.